Hygienic Process Isolation

Hygienic Shut-Off Valves

LGN Group supplies hygienic Shut-Off Valves for complete opening, closing, and isolation of product and utility lines in food, dairy, beverage, pharmaceutical, biotechnology, and cosmetic processing systems.

This engineering page focuses particularly on Butterfly Valves, including Alfa Laval LKB, LKB-2 and LKB-F configurations, manual and pneumatic actuation, Inch and DIN connections, seal materials, accessories, service parts, and verified OEM reference numbers.

Explore Butterfly Valves OEM Part Numbers Request a Quote
Main Focus Butterfly Valves LKB · LKB-2 · LKB-F
Operation Manual or Pneumatic Handle · LKLA · LKLA-T
Connections Inch and DIN Weld · Clamp · ISO
Documentation OEM Part Numbers Exact denomination matching
Process Isolation

What is a hygienic Shut-Off Valve?

A hygienic Shut-Off Valve is designed to open or close a process path completely. It enables dependable isolation of tanks, pipelines, pumps, heat exchangers, fillers, separators, manifolds, and CIP circuits during production, cleaning, product changeover, inspection, and maintenance.

Reliable On/Off operation in hygienic processes

Unlike a Regulating Valve, which is selected to control flow, pressure, or another process variable, a Shut-Off Valve is primarily intended for dependable On/Off service.

When fully open, the valve allows product or cleaning media to pass through the line. When closed, its sealing system isolates the downstream process section and limits leakage according to the selected valve design, operating conditions, and seal configuration.

The correct valve must be chosen according to the product, viscosity, particle content, process pressure, temperature, CIP/SIP regime, installation space, operating frequency, automation requirements, and hygienic connection standard.

Valve Classification

Shut-Off Valve families in hygienic processing

Several valve technologies can perform an isolation duty. This page gives priority to Butterfly Valves and provides only a concise overview of valve families that are covered in greater depth on their dedicated LGN pages.

01

Butterfly Valves

Compact and economical hygienic valves using a rotating disc for fast opening and closing. The main product families covered here are LKB, LKB-2 and LKB-F.

LKB LKB-2 LKB-F Main Page Focus
View Butterfly Valve engineering data
02

Diaphragm Valves

Hygienic and UltraPure valve designs in which a flexible diaphragm separates the actuator mechanism from the process medium.

High Hygiene Pharma Biotech
View the Diaphragm Valve section
03

Single Seat Valves

General-purpose hygienic Seat Valves for reliable product-line isolation. Detailed construction, models, spare parts, and OEM references belong on the dedicated Seat Valve page.

Seat Valve On/Off Dedicated Page
Open the Seat Valves page
04

Double Seat / Mixproof Valves

High-safety valve systems with two independent sealing elements and a leakage chamber to reduce the risk of cross-contamination between incompatible media.

Double Seat Mixproof High Safety
Open the Mixproof Valves page

Scope of this engineering page

Ball Valves, Single Seat Valves, and Double Seat / Mixproof Valves are significant enough to support dedicated technical pages. To avoid duplicated content, their detailed models and OEM spare-part tables are not repeated here. The principal catalogue and part-number coverage on this page is reserved for Butterfly Valves, followed by a dedicated Diaphragm Valve overview and compatible accessories.

Butterfly Valve Technology

Hygienic Butterfly Valves for fast, reliable process isolation

Hygienic Butterfly Valves are compact On/Off valves designed for routing and isolation duties in food, dairy, beverage, pharmaceutical, cosmetic, biotechnology, water-treatment, and clean-utility systems. Their large opening area provides low flow resistance and supports gentle handling of low- and medium-viscosity products.

How a Butterfly Valve works

The valve contains a circular Disc mounted on a rotating Shaft. When the Shaft turns approximately 90 degrees, the Disc moves between the open and closed positions.

In the open position, the Disc aligns with the direction of flow and creates a large free passage through the valve. In the closed position, the Disc compresses the elastomeric Seal Ring and isolates the process line.

Depending on the installation, operation may be performed by a Manual Handle, an LKLA pneumatic actuator, an LKLA-T actuator, or an automated control system with position feedback.

Alfa Laval Butterfly Valve Families

LKB, LKB-2, LKB-F and hygienic special versions

The correct model must be identified before selecting body halves, Discs, Seal Rings, bushes, handles, actuators, or Service Kits. Similar sizes across different valve families do not automatically use the same OEM spare parts.

LKB Butterfly Valve — ISO / Inch

The standard LKB family for hygienic process isolation. Common sizes include 25, 38, 51, 63.5, 76, 101.6, and 152 mm, with size-specific Disc, Shaft, bush, Seal Ring, and Service Kit references.

ISO / Inch Manual Pneumatic 304L / 316L

LKB-2 Butterfly Valve — DIN

DIN-size Butterfly Valve family with nominal dimensions from DN25 through large-line variants. Welding and male-part body halves use separate OEM references.

DIN DN25–DN150 Weld Male Part

LKB-F Butterfly Valve — ISO

Flanged Butterfly Valve configuration intended for applications where flanged process connections are required. ISO and DIN versions have different body parts, dimensions, and spare-part references.

LKB-F ISO Flanged

LKB-F Butterfly Valve — DIN

DIN flanged variant for hygienic process and utility lines. Always verify the exact valve standard and nominal size before ordering replacement parts.

LKB-F DIN Flanged

LKB UltraPure

UltraPure Butterfly Valve platform intended for applications requiring enhanced material control, traceability, hygienic documentation, and pharmaceutical or biotechnology compliance.

UltraPure Pharma Biotech Traceability

i-BFV Butterfly Valve

Intelligent Butterfly Valve configuration designed for modern automated processing plants. Identification must include the exact valve version, control interface, size, and connection standard.

i-BFV Automated Position Feedback

OEM-family matching is mandatory

A part number must never be selected only from valve size. The exact family, connection standard, body material, Disc material, Seal Ring, Shaft square, actuator type, and production period may all affect the correct OEM reference.

Construction

Main Butterfly Valve components

Correct identification of the installed component is essential because body halves, Discs, bushes, fasteners, Seal Rings, handles, and actuators are selected independently in the OEM spare-parts structure.

Valve body halves

The two body halves enclose the Seal Ring and support the Disc Shaft. Depending on the valve family, they may be welding, male-part, Clamp, flanged, ISO, or DIN versions.

304L 316L Weld Clamp

Disc and Shaft

The Disc rotates inside the elastomeric Seal Ring. Disc references vary by valve size, stainless-steel grade, and Shaft-square configuration such as square 8, 10, 12, 14, or 15.

AISI 304 AISI 316L Square Shaft

Seal Ring

The product-wetted Seal Ring provides shut-off around the Disc. Seal material must match process temperature, product chemistry, cleaning media, pressure, and regulatory requirements.

EPDM Silicone Q FPM HNBR PFA

Bushes

Upper and lower bushes support Disc-Shaft movement and help maintain alignment. Many OEM references are supplied as sets of ten pieces rather than as single bushes.

Upper Bush Lower Bush 10-Piece Set

Fastening sets

Screws and nuts secure the valve body halves. Fastener size changes according to nominal valve size and may include M6, M8, or M10 sets.

M6 M8 M10

Service Kits

OEM Service Kits group recommended product-wetted wear parts for a specific size and elastomer. They are normally the preferred solution for preventive maintenance and complete valve servicing.

Preventive Maintenance Product-Wetted Parts
Manual & Pneumatic Operation

Butterfly Valve actuation options

Actuation must be selected according to operating frequency, fail-safe requirement, available air pressure, plant automation architecture, valve size, and Disc-Shaft square.

Manual Handle

Suitable for local operation where frequent automated switching is not required. Depending on version, the Handle may provide fixed positions, multiposition adjustment, indication-unit compatibility, or locking.

Local Operation Simple Cost-Effective

LKLA Air/Spring Actuator

Pneumatic actuator with spring return. It can be configured for Normally Closed or Normally Open duty, providing a defined fail-safe position if the air supply is lost.

NC NO Spring Return Fail-Safe

LKLA Air/Air Actuator

Double-acting actuator using compressed air for both opening and closing. It is used where a spring-return fail-safe position is not required.

Double Acting Air/Air Automated

LKLA-T Air/Spring Actuator

Pneumatic actuator prepared for top-unit integration. Available in different diameters and spring-return configurations according to valve size and required operating torque.

LKLA-T NC / NO Top Unit

LKLA-T Air/Air Actuator

Double-acting top-unit-compatible actuator for automated Butterfly Valve operation. Larger valves may require dedicated actuator sizing.

LKLA-T Air/Air Large Sizes

Control and indication units

Position feedback, solenoid control, and diagnostic functions may be added through compatible indication or control units such as ThinkTop, IndiTop, or Unique Control configurations.

ThinkTop IndiTop Unique Control PLC Feedback

Actuator selection requires exact valve identification

Please provide valve family, nominal size, Disc-Shaft square, actuator diameter, operating mode, fail-safe position, air pressure, and control unit requirement. Similar-looking actuators may use different mounting and spare-part references.

Request actuator support
Connections & Standards

Inch, ISO, DIN, Weld, Clamp, male-part and flanged configurations

Connection style is part of the valve identity. Two Butterfly Valves with the same nominal diameter may use different body halves and part numbers if their process standards or end connections differ.

ISO / Inch welding ends

Common in hygienic process piping using outside-diameter tube sizes such as 25, 38, 51, 63.5, 76, 101.6, and 152 mm.

ISO Inch Weld

DIN welding ends

Nominal DIN line sizes such as DN25, DN32, DN40, DN50, DN65, DN80, DN100, DN125, and DN150.

DIN DN Series Weld

Clamp connections

Hygienic Clamp ends support rapid removal and installation. Clamp dimensions must match the plant standard and should not be assumed from tube outside diameter alone.

Clamp Tri-Clamp Service Access

Male-part connections

Threaded hygienic male-part body halves are listed separately from welding versions in LKB-2 DIN spare-parts tables.

Male Part DIN Separate OEM Number

Flanged connections

LKB-F valves are used where flanged installation is required. ISO and DIN flanged versions must be treated as separate product families.

LKB-F ISO Flange DIN Flange

Mixed connection valves

Some configurations may combine different end types or form part of dedicated process assemblies. Both ends must be identified before preparing a quotation.

Weld / Clamp Project-Specific
Stainless-Steel Selection

Body and Disc materials

Material selection must be based on product chemistry, chloride exposure, cleaning agents, required corrosion resistance, plant standard, and documentation requirements.

AISI 304 / 304L

AISI 304 and 304L are widely used in hygienic food, beverage, dairy, and clean-utility installations where the medium and cleaning chemistry are compatible with this stainless-steel grade.

OEM tables may list the Valve body half as 304L while the Disc is described as AISI 304. These descriptions must be preserved exactly when matching spare parts.

Food Beverage Dairy Utilities

AISI 316L

AISI 316L offers improved corrosion resistance and is frequently selected for more demanding products, cleaning chemicals, pharmaceutical duties, biotechnology systems, and plants standardized on 316L.

A 316L body does not automatically confirm that every installed internal component is also 316L. Disc material and the complete valve denomination should be checked separately.

316L Pharma Biotech Higher Corrosion Resistance
Elastomer & Polymer Options

Butterfly Valve Seal Ring materials

Seal material affects temperature capability, chemical resistance, product compatibility, service life, and regulatory suitability. Final selection must be confirmed against the actual product and CIP/SIP media.

EPDM

Common hygienic elastomer with good resistance to hot water, steam, and many alkaline cleaning solutions. Frequently used in dairy, beverage, and food-processing systems.

Hot Water Steam Alkaline CIP

Silicone (Q)

Flexible elastomer used in selected hygienic and temperature-sensitive applications. Correct lubrication during assembly is particularly important for OEM Q Seal Rings.

Q Flexible Assembly Care

FPM / Viton

Fluoroelastomer option for applications requiring resistance to many oils, fats, acids, and chemicals. Compatibility must be checked against steam, caustic concentration, and operating temperature.

FPM Viton Oil & Fat Resistance

HNBR

Hydrogenated nitrile elastomer used where improved temperature, wear, oil, and fat resistance may be required compared with standard NBR.

HNBR Wear Resistance Oil Resistance

PFA

High-chemical-resistance fluoropolymer solution for selected demanding applications. Some PFA Service Kits may include a Seal Ring supplied assembled with the Disc.

PFA Chemical Resistance Special Service Kit

NBR

Nitrile elastomer may be used in selected food and utility duties, particularly where resistance to oils and fats is required. Temperature and cleaning compatibility must be verified.

NBR Oil & Fat Application-Specific

Do not select a Seal Ring by color alone

Seal colors may vary by manufacturer, production period, formulation, storage condition, and service exposure. Use the OEM denomination, Service Kit reference, valve family, size, and material specification.

Critical Identification Detail

Disc-Shaft square and valve-size matching

The Shaft square is one of the most important identification details for handles, actuators, Discs, and some Service Kit configurations.

Common LKB and LKB-2 Disc-Shaft square groups

General identification guide; final confirmation must follow the exact OEM table for the installed model.

Identification Guide
Valve family Typical size group Disc-Shaft square Ordering note
LKB ISO 25 / 38 / 51 / 63.5 mm □ 8 Confirm size and body/Disc material before ordering.
LKB ISO 76 mm □ 10 Requires matching Handle or actuator square.
LKB ISO 101.6 mm □ 10 or □ 12 Legacy square-10 and current square-12 configurations must not be mixed.
LKB ISO 152 mm □ 12 / □ 15 Confirm the exact Disc and actuator configuration from the installed valve.
LKB-2 DIN DN25 / DN32 / DN40 / DN50 □ 8 Welding and male-part body halves have different OEM references.
LKB-2 DIN DN65 / DN80 □ 10 Match actuator size and torque to nominal valve size.
LKB-2 DIN DN100 □ 12 Verify current configuration before replacing legacy components.
LKB-2 DIN DN125 / DN150 □ 14 Large-valve actuator and fastening arrangements require exact identification.
The table is an identification aid and not a substitute for the exact OEM denomination. Production period and special valve versions can change the correct Disc, Handle, actuator, or Service Kit.
Applications

Typical Butterfly Valve duties

Butterfly Valves are most effective where compact, economical, and frequently operated isolation is required and the selected valve design is compatible with the process safety and hygiene level.

Tank connections

Product, ingredient, water, CIP, and utility isolation at tank inlets and outlets.

Transfer lines

On/Off control for milk, juice, beverage, liquid food, water, and compatible process media.

Equipment isolation

Isolation of pumps, heat exchangers, separators, fillers, filters, mixers, and process skids.

CIP distribution

Routing and isolation of water, caustic, acid, disinfectant, and return flows within validated cleaning systems.

Utility systems

Clean water, process water, compressed-air auxiliaries, and other compatible utility services.

Automated manifolds

Pneumatically actuated routing points with open/closed feedback and PLC interlocking.

Next: complete OEM spare-part and Service Kit tables

The following page sections organize each verified reference by exact valve family, standard, size, component, material, Seal Ring, and Disc-Shaft square.

Open OEM tables
Verified OEM References

Alfa Laval Butterfly Valve spare parts and Service Kits

The tables below reproduce the OEM spare-part structure for the LKB Butterfly Valve, ISO and LKB-2 Butterfly Valve, DIN. Each reference is separated by exact valve size, material, component and disc-shaft connection. Blank cells mean that no part number was stated for that size in the referenced catalogue table.

Part-number control rule

Part numbers are displayed without added or reconstructed digits. Where the OEM catalogue does not provide a separate individual seal reference, the complete Service Kit number is listed instead.

LKB · ISO

LKB Butterfly Valve, ISO — individual spare parts

OEM references for valve body halves, discs, bush sets and fastening sets. The 101.6 mm valve appears in both legacy square-10 and current square-12 disc-connection configurations; confirm the installed shaft connection before ordering.

LKB ISO — 25 mm to 51 mm

Disc connection: square 8

Alfa Laval OEM
Pos. Qty. Denomination 25 mm
□ 8		 38 mm
□ 8		 51 mm
□ 8
1 2 Valve body half, AISI 304L 9611443650 9611443220 9611443230
1 2 Valve body half, AISI 316L 9611443651 9611443221 9611443231
2 1 Disc, AISI 304 9611413680 9611411690 9611411770
2 1 Disc, AISI 316L 9611413681 9611411691 9611411771
3 Set of 10 Bush set — upper position 9614464002 9614464001 9614464002
4 Set of 10 Bush set — lower position 9614464007 9614464001 9614464002
6 1 set Set of screws M6 + nut M6 9611417340 9611417340 —
6 1 set Set of screws M8 + nut M8 — — 9611417350
Position 5 is the product-wetted seal ring. For ordering, use the material-specific Service Kit references in the following tables.

LKB ISO — 63.5 mm to 152 mm

Disc connections: square 8, square 10 and square 12

Alfa Laval OEM
Pos. Qty. Denomination 63.5 mm
□ 8		 76 mm
□ 10		 101.6 mm
□ 10 / □ 12		 152 mm
□ 12
1 2 Valve body half, AISI 304L 9611443240 9611443070 9611413250 9611413250
1 2 Valve body half, AISI 316L 9611443241 9611443071 9611413251 9611413251
2 1 Disc, AISI 304 9611411850 9611411930 — —
2 1 Disc, AISI 316L 9611411851 9611411931 — —
2 1 Disc, square 12, AISI 304 — — 9612046301 —
2 1 Disc, square 12, AISI 316L — — 9612046302 —
3 Set of 10 Bush set — upper position 9614464003 9614464004 9614464006 9614464006
4 Set of 10 Bush set — lower position 9614464003 9614464004 9614464005 9614464005
6 1 set Set of screws M8 + nut M8 9611417350 9611417360 — —
6 1 set Set of screws M10 + nut M10 — — 9611417370 9611417370
OEM note: the square-10 disc connection for 101.6 mm / DN100 is no longer available. Existing handles and/or air actuators should be rebuilt for the square-12 disc connection before ordering replacement parts.
Product-Wetted Parts

LKB ISO Service Kits

Complete Service Kits are listed by size and elastomer. These kits contain the catalogue-marked product-wetted wear parts for general valve service.

LKB ISO — 25 mm to 63.5 mm Service Kits

Disc connection: square 8

Service Kit
Seal material 25 mm 38 mm 51 mm 63.5 mm
EPDM 9611923028 9611923029 9611923030 9611923031
Silicone (Q) 9611923034 9611923035 9611923036 9611923037
FPM 9611923040 9611923041 9611923042 9611923043
HNBR 9611923160 9611923161 9611923162 9611923163
PFA 9611923183 9611923184 9611923185 —

LKB ISO — 76 mm to 152 mm Service Kits

Check the disc connection before ordering the 101.6 mm kit

Service Kit
Seal material 76 mm
□ 10		 101.6 mm
□ 10		 101.6 mm
□ 12		 152 mm
□ 15
EPDM 9611923032 9611923033 9611923033 9611923046
Silicone (Q) 9611923038 9611923039 9611923039 9611923047
FPM 9611923044 9611923045 9611923045 9611923048
HNBR 9611923164 9611923165 9611923165 9611923197
PFA 9611923186 9611923187 9611923187 —
Lubricate the seal pin holes with Klüber Paraliq GTE 703 or a technically equivalent food-grade lubricant during assembly. This is particularly important for Silicone (Q) and FPM seals.
LKB-2 · DIN

LKB-2 Butterfly Valve, DIN — individual spare parts

References apply to LKB-2 valves with bushes, catalogue period 9301 and later. Welding and male-part body halves are separated because the connection geometry and OEM numbers are different.

LKB-2 DIN — DN25 to DN50

Disc connection: square 8

Alfa Laval OEM
Pos. Qty. Denomination DN25 DN32 DN40 DN50
12 Valve body half, welding, AISI 304L 9612323601 9612323701 9612323801 9612323901
12 Valve body half, welding, AISI 316L 9612323602 9612323702 9612323802 9612323902
1a2 Valve body half, male part, AISI 304L 9612324301 9612324401 9612324501 9612324601
1a2 Valve body half, male part, AISI 316L 9612324302 9612324402 9612324502 9612324602
21 Disc, AISI 304 9612073605 9612073705 9612073805 9612073905
21 Disc, AISI 316L 9612073604 9612073704 9612073804 9612073904
3Set of 10 Bush set — upper position 9614464002 9614464002 9614464002 9614464003
4Set of 10 Bush set — lower position 9614464002 9614464002 9614464002 9614464003
61 set Set screw M6 + nut M6 9611417340 9611417340 9611417340 —
61 set Set screw M8 + nut M8 ——— 9611417350

LKB-2 DIN — DN65 to DN150

Disc connections: square 10, square 12 and square 14

Alfa Laval OEM
Pos. Qty. Denomination DN65
□ 10		 DN80
□ 10		 DN100
□ 12		 DN125 / DN150
□ 14
12 Valve body half, welding, AISI 304L 9612324001 9612324101 9612324201 9612077401
12 Valve body half, welding, AISI 316L 9612324002 9612324102 9612324202 9612077402
1a2 Valve body half, male part, AISI 304L 9612324701 9612324801 9612324901 9612077201
1a2 Valve body half, male part, AISI 316L 9612324702 9612324802 9612324902 9612077202
21 Disc, AISI 304 9612074005 9612074105 9612074205 9612076905
21 Disc, AISI 316L 9612074004 9612074104 9612074204 9612076904
3Set of 10 Bush set — upper position 9614464003 9614464003 9614464004 9614464008
4Set of 10 Bush set — lower position 9614464003 9614464003 9614464004 9614464008
61 set Set screw M8 + nut M8 9611417360 9611417360 ——
61 set Set screw M10 + nut M10 —— 9611417370 —
61 set Set screw M10 + nut M10, 6 pcs. ——— 9611417770
Product-Wetted Parts

LKB-2 DIN Service Kits

Select the kit by nominal DIN size and elastomer. DN125 and DN150 share the large-valve catalogue column where indicated.

LKB-2 DIN — DN25 to DN50 Service Kits

Disc connection: square 8

Service Kit
Seal material DN25 DN32 DN40 DN50
EPDM 9611923075 9611923076 9611923077 9611923078
Silicone (Q) 9611923083 9611923084 9611923085 9611923086
FPM 9611923091 9611923092 9611923093 9611923094
HNBR 9611923210 9611923211 9611923212 9611923213
PFA 9611923191 9611923192 — —
The OEM catalogue text places a footnote marker immediately after reference 9611923191; the published part number is shown here without that footnote character.

LKB-2 DIN — DN65 to DN150 Service Kits

Disc connections: square 10, square 12 and square 14

Service Kit
Seal material DN65 DN80 DN100 DN125 DN150
EPDM 9611923079 9611923080 9611923081 9611923082 9611923046
Silicone (Q) 9611923087 9611923088 9611923089 9611923090 9611923047
FPM 9611923095 9611923096 9611923097 9611923098 9611923048
HNBR 9611923214 9611923215 9611923216 9611923217 9611923197
PFA 9611923193 9611923194 9611923195 — —
For the applicable PFA Service Kits, the seal ring is supplied assembled with the disc. Verify valve size, shaft square and installed disc before ordering.

Identification before quotation

For an exact spare-part match, send the valve model, nominal size, connection standard, material, seal material, disc-shaft square and a clear photo of the installed component or valve nameplate.

Request identification support
Engineering Schematic

Exploded hygienic Butterfly Valve construction

This simplified exploded schematic connects the numbered OEM table positions with the physical Butterfly Valve components. It is intended as an identification aid for LKB and LKB-2 style assemblies.

Exploded hygienic Butterfly Valve schematic Exploded view showing handle or actuator, shaft, upper bush, two valve body halves, disc, seal ring, lower bush and fastening set. FLOW FLOW 1 2 3 4 5 6 7 8 9 Valve body half Disc Upper Bush Lower Bush Seal Ring Screw set Manual Handle Actuator interface Shaft Simplified engineering schematic — not a dimensional manufacturing drawing
1
Valve body half Two matching body halves form the pressure-retaining valve body. Weld, male-part, Clamp and flanged versions use different references.
2
Disc Rotating shut-off element. Confirm size, AISI grade and Disc-Shaft square before ordering.
3
Upper Bush Supports and guides the upper section of the Shaft.
4
Lower Bush Supports lower Shaft alignment and smooth quarter-turn movement.
5
Seal Ring Product-wetted sealing element available in EPDM, Silicone (Q), FPM, HNBR, PFA and selected other materials.
6
Screw and nut set Fastens the two body halves. Fastener size changes with valve size.
7
Manual Handle Local quarter-turn operation with fixed, multiposition or lockable configurations.
8
Actuator interface Connection point for LKLA, LKLA-T or compatible pneumatic actuation.
9
Shaft Transfers torque from Handle or actuator to the Disc.
Component Identification Guide

How each component affects the OEM reference

The same nominal valve size can use different part numbers because of material, connection, production period, Disc-Shaft square, actuator configuration, or Seal Ring specification.

Valve body halves

Check whether the body is ISO/Inch or DIN and whether each end is Weld, male part, Clamp or flange. Confirm AISI 304L or AISI 316L.

Pos. 1 304L / 316L Connection-Specific

Disc

Match nominal valve size, stainless-steel grade and Shaft square. Legacy and current Disc designs may not be interchangeable.

Pos. 2 AISI 304 / 316L □ 8–15

Bushes

Upper and lower bush references may be identical or different depending on size. OEM catalogues often supply them as ten-piece sets.

Pos. 3–4 Wear Component 10-Piece Set

Seal Ring

Select by exact valve family, size and elastomer. Do not identify the material only by color or by an old removed sample.

Pos. 5 Product-Wetted Service Kit

Fasteners

Screw and nut sets vary by valve size and body design. Correct clamping is necessary for Seal Ring compression and body alignment.

Pos. 6 M6 / M8 / M10

Handle or actuator

The operating unit must fit the Disc-Shaft square and valve size. Pneumatic variants also require NC, NO or Air/Air confirmation.

Manual LKLA LKLA-T
OEM Identification Workflow

From installed valve to the correct part number

Follow this sequence before selecting any body, Disc, Seal Ring, Service Kit, Handle or actuator reference.

01

Valve family

Identify LKB, LKB-2, LKB-F, LKB UltraPure, i-BFV or another exact family.

02

Connection standard

Confirm ISO/Inch, DIN, Weld, male part, Clamp, flange or mixed ends.

03

Nominal size

Read the exact OD or DN size from the valve, drawing or process line.

04

Body material

Confirm AISI 304L, AISI 316L or another specified stainless-steel grade.

05

Disc material

Check AISI 304 or AISI 316L independently from the valve body material.

06

Seal material

Identify EPDM, Silicone (Q), FPM, HNBR, PFA or the specified alternative.

07

Shaft square

Measure or confirm square 8, 10, 12, 14 or 15 as applicable.

08

Operating unit

Confirm Manual Handle, LKLA, LKLA-T, NC, NO, Air/Air and actuator diameter.

Production period matters

Some obsolete or legacy LKB products have separate body, Disc, bush, Handle and actuator references. A current catalogue number should not be assumed to fit an older valve.

101.6 mm / DN100 requires special attention

Legacy square-10 and current square-12 configurations exist. The Handle, actuator interface and Disc must all be compatible with the installed Shaft square.

PFA kits may include the Disc

In selected configurations, the PFA Seal Ring is supplied assembled with the Disc. Confirm kit contents before ordering individual components.

Service Kit contents are model-specific

A Service Kit may include only the catalogue-marked product-wetted wear parts. Bushes, screws, Handle components or actuator parts may require separate ordering.

RFQ Preparation

Information required for accurate identification

Sending complete technical details prevents incompatible quotations and reduces the risk of ordering the wrong OEM part.

Valve identification

Model, family, nameplate, serial or item number, and approximate production period.

Size and connection

Exact OD or DN, connection at both ends, tube standard and body geometry.

Materials

Body material, Disc material and required Seal Ring elastomer.

Disc-Shaft details

Shaft square, Disc dimensions and clear close-up photographs.

Actuation

Manual or pneumatic, LKLA or LKLA-T, NC, NO or Air/Air, and actuator size.

Process conditions

Product, temperature, pressure, CIP/SIP media and any compliance requirement.

Send photographs with your RFQ

Include one full-valve image, one nameplate image, one connection image, and close-ups of the Handle or actuator, Shaft square and removed Seal Ring.

Request OEM identification
Verified OEM References

LKB-F flanged Butterfly Valve spare parts

The LKB-F assembly adds two stainless-steel flanges and two flange Seal Rings to the standard Butterfly Valve body, Disc, bushes and product-wetted Seal Ring. ISO and DIN variants use separate flange and valve-body references and must not be mixed.

LKB-F has two separate sealing locations

Position 5 is the central product-wetted Butterfly Valve Seal Ring. Position 8 identifies the two flange Seal Rings installed between the valve-body assembly and the external flanges.

LKB-F · ISO

LKB-F Butterfly Valve, ISO — individual spare parts

Verified references for 25–101.6 mm ISO/Inch flanged valves. The OEM catalogue lists the valve body and flange references in AISI 316L. No separate AISI 304L numbers are published in this table.

LKB-F ISO — valve body, Disc and bushes

25, 38, 51, 63.5, 76 and 101.6 mm

Alfa Laval OEM
Pos. Qty. Denomination 25 mm
□ 8		 38 mm
□ 8		 51 mm
□ 8		 63.5 mm
□ 8		 76 mm
□ 10		 101.6 mm
□ 12
12 Valve body half, AISI 316L 9612402410 9612402411 9612402412 9612402413 9612402414 9612402415
21 Disc, AISI 304 9611413680 9611411690 9611411770 9611411850 9611411930 9612046301
21 Disc, AISI 316L 9611413681 9611411691 9611411771 9611411851 9611411931 9612046302
3Set of 10 Upper Bush set 9614464002 9614464001 9614464002 9614464003 9614464004 9614464006
4Set of 10 Lower Bush set 9614464002 9614464001 9614464002 9614464003 9614464004 9614464006

LKB-F ISO — fasteners and flanges

Flange quantity: two pieces per complete valve

Flanged Assembly
Pos. Qty. Denomination 25 mm 38 mm 51 mm 63.5 mm 76 mm 101.6 mm
61 set Set of screws and nuts 9612400101 9612400101 9612400102 9612400102 9612400103 9612400104
72 Flange, AISI 316L 9612402510 9612402511 9612402512 9612402513 9612402514 9612402515
The individual product Seal Ring at position 5 and flange Seal Rings at position 8 are catalogued through the material-specific Service Kits below.
LKB-F ISO · Product-Wetted Parts

LKB-F ISO Service Kits

Each kit is selected by exact valve size and Seal Ring material. Service Kit references include the catalogue-marked wear parts for the central valve and flange sealing locations.

LKB-F ISO — Service Kit reference matrix

25–101.6 mm

Service Kit
Seal material 25 mm
□ 8		 38 mm
□ 8		 51 mm
□ 8		 63.5 mm
□ 8		 76 mm
□ 10		 101.6 mm
□ 12
EPDM 9611923058 9611923059 9611923060 9611923061 9611923062 9611923063
Silicone (Q) 9611923064 9611923065 9611923066 9611923067 9611923068 9611923069
FPM 9611923070 9611923071 9611923072 9611923073 9611923074 9611923099
HNBR 9611923310 9611923311 9611923312 9611923313 9611923314 9611923315
PFA on EPDM No separate Service Kit numbers published in this table
OEM note: PFA Service Kits are supplied with EPDM flange seals. Confirm availability and the complete kit denomination before quotation.
LKB-F · DIN

LKB-F Butterfly Valve, DIN — individual spare parts

DIN references are divided into DN25–DN50 and DN65–DN150 groups. Shaft-square size increases with valve diameter, so Disc, actuator and Handle compatibility must be verified together.

LKB-F DIN — DN25 to DN50

Disc connection: square 8

Alfa Laval OEM
Pos. Qty. Denomination DN25 DN32 DN40 DN50
12 Valve body half, AISI 316L 9612402401 9612402402 9612402403 9612402404
21 Disc, AISI 316L 9612073604 9612073704 9612073804 9612073904
3Set of 10 Upper Bush set 9614464002 9614464002 9614464002 9614464003
4Set of 10 Lower Bush set 9614464002 9614464002 9614464002 9614464003
61 set Set of screws and nuts 9612400101 9612400101 9612400101 9612400102
72 Flange, AISI 316L 9612402501 9612402502 9612402503 9612402504

LKB-F DIN — DN65 to DN150

Disc connections: square 10, 12, 14 and 15

Large DIN Sizes
Pos. Qty. Denomination DN65
□ 10		 DN80
□ 10		 DN100
□ 12		 DN125
□ 14		 DN150
□ 15
12 Valve body half, welding, AISI 316L 9612402405 9612402406 9612402407 9612402408 9612402409
21 Disc, AISI 316L 9612074004 9612074104 9612074204 9612076904 9611413701
3Set of 10 Upper Bush set 9614464003 9614464003 9614464003 9614464008 9614464009
4Set of 10 Lower Bush set 9614464003 9614464003 9614464004 9614464008 9614464009
61 set Set of screws and nuts 9612400103 9612400103 9612400104 9612400105 9612400106
72 Flange, AISI 316L 9612402505 9612402506 9612402507 9612402508 9612402509
Position 3 and position 4 use different DN100 Bush references: upper Bush set 9614464003 and lower Bush set 9614464004.
LKB-F DIN · Product-Wetted Parts

LKB-F DIN Service Kits

Complete Service Kit references for EPDM, Silicone (Q), FPM and HNBR. The catalogue does not publish individual PFA kit numbers in this table.

LKB-F DIN — DN25 to DN50 Service Kits

Disc connection: square 8

Service Kit
Seal material DN25 DN32 DN40 DN50
EPDM 9611923100 9611923101 9611923102 9611923103
Silicone (Q) 9611923109 9611923110 9611923111 9611923112
FPM 9611923118 9611923119 9611923120 9611923121
HNBR 8010019278 8010019279 8010019280 8010019287
PFA No separate Service Kit numbers published in this table

LKB-F DIN — DN65 to DN150 Service Kits

Large-size flanged Butterfly Valves

Service Kit
Seal material DN65 DN80 DN100 DN125 DN150
EPDM 9611923104 9611923105 9611923106 9611923107 9611923108
Silicone (Q) 9611923113 9611923114 9611923115 9611923116 9611923117
FPM 9611923122 9611923123 9611923124 9611923125 9611923126
HNBR 8010019288 8010019289 8010019290 8010019291 8010020039
PFA No separate Service Kit numbers published in this table
OEM note: HNBR and PFA Service Kits are delivered with EPDM flange seals. For applicable special-material kits, the central Seal Ring may be delivered assembled with the Disc.
Ordering Control

LKB-F identification checklist

A complete LKB-F RFQ should identify both the central Butterfly Valve assembly and its flange-specific components.

1. Confirm ISO or DIN

ISO and DIN body halves, flanges, dimensions and kit references are separate and are not interchangeable.

2. Confirm exact size

Provide 25–101.6 mm for ISO or DN25–DN150 for DIN together with the measured tube or flange dimensions.

3. Confirm Shaft square

Identify square 8, 10, 12, 14 or 15 before selecting a Disc, Handle or pneumatic actuator.

4. Confirm both seal types

State the central product Seal Ring material and verify the two flange Seal Rings included with the Service Kit.

5. Confirm flange material

The verified OEM tables above publish AISI 316L flange numbers. Request any alternative material by complete valve denomination.

6. Send assembly photographs

Include the complete valve, both flanges, actuator or Handle, nameplate and removed sealing components.

Need help identifying an LKB-F assembly?

Send the valve standard, size, material, Seal Ring material, Disc-Shaft square and clear photographs. LGN can cross-check the installed configuration before quotation.

Request LKB-F identification
Manual Operation

Butterfly Valve Handle assemblies and spare parts

Manual Handle components must be matched to the valve family, nominal size and Disc-Shaft square. The tables below preserve only the OEM references explicitly published for i-BFV, Handle 1.1, indication-unit Handle assemblies and Handle G.

Blank cells are intentional

Where the OEM catalogue does not publish an individual reference for a Location Cap, Transfer Block, Handle body, Insert or Coupling, the table displays an em dash rather than reconstructing a number.

i-BFV Handle

i-BFV manual Handle — verified component references

The i-BFV Handle uses different Screw-with-Pin, Spring and Ball references according to Shaft square 8, 10 or 12.

i-BFV Handle — 25 to 101.6 mm

Two-position and four-position Location Cap variants

Alfa Laval OEM
Pos. Qty. Denomination 25–63.5 mm
□ 8		 76 mm
□ 10		 101.6 mm
□ 12
1a1 Location Cap, 2 positions ———
1b1 Location Cap, 4 positions ———
21 Transfer Block ———
31 Handle ———
41 Screw with Pin 9612045201 9612045301 9612045301
51 Spring 9611991998 9611991998 9611991982
61 Ball 9611991970 9611991970 9611991981
Lockable Multiposition Handle

Lockable multiposition Handle — verified fastener references

The OEM table publishes individual Screw references by Disc-Shaft square. Insert and Positioning Cap references are not separately stated.

Lockable multiposition Handle

Square 8, square 10 and square 12

Manual Handle
Pos. Qty. Denomination Disc □ 8 Disc □ 10 Disc □ 12
11 Insert ———
21 Positioning Cap, 76–101.6 mm / DN65–DN100 ———
21 Positioning Cap, 25–63.5 mm / DN25–DN50 ———
31 Screw 9612045302 9612045301 9612045301
Handle 1.1

Handle 1.1 for LKB Butterfly Valve

Standard Handle 1.1 references are grouped by nominal valve size and Disc-Shaft square. The catalogue publishes individual numbers for the Screw with Pin, Spring and Ball.

Handle 1.1 — standard configuration

ISO/Inch and DIN size compatibility

Handle 1.1
Pos. Denomination 25–63.5 mm
DN25–DN50
□ 8		 76 mm
DN65–DN80
□ 10		 101.6 mm
DN100
□ 12		 DN125
□ 14		 DN150
□ 15
1a Location Cap, 2 positions —————
1b Location Cap, 4 positions —————
2 Transfer Block —————
3 Handle —————
4 Screw with Pin 9612045201 9612045301 9612045301 9612045301 9612045301
5 Spring 9611991998 9611991998 ———
6 Ball 9611991970 9611991970 9611991981 9611992512 9611992713
The source table does not publish separate Spring numbers for the square-12, square-14 and square-15 columns.

Handle 1.1 — Location Cap turned 90°

25–101.6 mm / DN25–DN100

90° Cap Variant
Pos. Denomination 25–63.5 mm
DN25–DN50
□ 8		 76 mm
DN65–DN80
□ 10		 101.6 mm
DN100
□ 12
1a Location Cap turned 90°, 2 positions ———
1b Location Cap turned 90°, 4 positions ———
2 Transfer Block ———
3 Handle ———
4 Screw with Pin 9612045201 9612045301 9612045301
5 Spring 9611991998 9611991998 9611991982
6 Ball 9611991970 9611991970 9611991981

Handle 1.1 — infinite-position version

25–101.6 mm / DN25–DN100

Infinite Position
Pos. Denomination 25–63.5 mm
DN25–DN50
□ 8		 76 mm
DN65–DN80
□ 10		 101.6 mm
DN100
□ 12
1 Location Cap ———
2 Transfer Block ———
3 Handle ———
4 Screw with Pin 9612045201 9612045301 9612045301
7 Crosshead ———
OEM compatibility note: the square-10 Handle 1.1 can also be used for an old-version 101.6 mm / DN100 LKB valve. The square-8 Handle 1.1 can also be used for an old-version DN65 LKB valve.
Position Indication

Handle 1.1 for indication unit

This version adds a mounting Bracket, fixing Screws, Coupling and Activating Ring for mechanical position indication.

Handle 1.1 — indication-unit components

ISO and DIN compatibility

Indication Unit
Pos. Denomination 25–63.5 mm
DN25–DN50
□ 8		 76 mm
DN80
□ 10		 101.6 mm
DN100
□ 12		 DN65 LKB-DIN
□ 10
4 Screw with Pin 9612045201 9612045301 9612045301 9612045301
5 Spring 9611991998 9611991998 9611991982 9611991998
6 Ball 9611991970 9611991970 9611991981 9611991970
8 Bracket 9611416470 9611416480 9611416480 9612081502
9 Screw, quantity 2 9611991686 9611991686 9611991686 9611991686
10 Coupling ————
11 Activating Ring with Screw 9611416690 9611416690 9611416690 9611416690
Handle G

LKB Butterfly Valve Handle G

Handle G uses compact six-digit legacy references. These numbers are preserved exactly as published and must not be padded with additional digits.

Handle G — 1″ to 4″

Handle, Stop Plate and Retaining Screw

Legacy OEM Format
Pos. Denomination 1″ 1½″ 2″ 2½″ 3″ 4″
6 Handle 331015 331015 331015 331015 331016 331016
7 Stop Plate 331141C 331141C 331141C 331141C 331142C 331142C
8 Retaining Screw 330028 330028 330028 330028 330035 330035

Next: LKLA and LKLA-T pneumatic actuator tables

The next section will organize actuator spare parts by actuator diameter, NC, NO, Air/Air configuration, valve size and Shaft square.

Review actuation options
Pneumatic Actuation

LKLA pneumatic actuators for hygienic Butterfly Valves

LKLA actuators convert linear piston movement into quarter-turn valve movement through a rotating-cylinder mechanism. The verified OEM catalogue groups these actuators into Ø85 and Ø133 versions, with Air/Spring and Air/Air operating modes.

Normally Closed — NC

Spring force drives the valve toward the closed position when compressed air is removed. Air pressure moves the piston to open the valve.

Air opens · Spring closes

Normally Open — NO

Spring force drives the valve toward the open position when compressed air is removed. Air pressure moves the actuator to close the valve.

Air closes · Spring opens

Air/Air — Double Acting

Compressed air is used for both opening and closing. This version has no spring-return fail-safe action and requires air control in both directions.

Air opens · Air closes
Engineering Cutaway

LKLA actuator operating components

The schematic below is a simplified engineering illustration connecting the principal actuator components to the OEM table positions. It is not a dimensional manufacturing drawing.

LKLA pneumatic actuator cutaway schematic Simplified cutaway showing air cylinder, piston, springs, rotating cylinder, bearings, coupling, air port and valve shaft interface. AIR PORT PISTON TRAVEL 1 3 2 10 8/9 12 17 18 Air cylinder Piston Rotating cylinder Needle bearing Spring system Thrust bearing Coupling Indicator / valve interface
1
Air Cylinder Outer pressure chamber containing the piston assembly.
2
Rotating Cylinder Converts piston travel into rotational valve movement.
3
Piston Moves under pneumatic pressure and spring force.
4/7/15
NBR O-rings Dynamic and static pneumatic sealing components included in Service Kits.
8/9
Spring System Inner and outer springs in Ø85 Air/Spring versions; spring assembly in Ø133.
10–12
Bearings Needle and thrust bearings support low-friction rotary conversion.
17
Coupling Matches the actuator to the Butterfly Valve Disc-Shaft square.
18
Activating Ring / Indication Pin Transfers actuator position to compatible indication or control equipment.
LKLA · Ø85 · Air/Spring

LKLA Ø85 Air/Spring actuator — NC and NO spare parts

Most internal references are common across NC and NO configurations. The Piston and Coupling references vary by operating mode and Disc-Shaft square.

LKLA Ø85 Air/Spring — core components

NC and NO · square 8, 10 and 12

Alfa Laval OEM
Pos. Qty. Denomination NC □ 8 NC □ 10 NC □ 12 NO □ 8 NO □ 10 NO □ 12
11Air Cylinder 961141758096114175809611417580961141758096114175809611417580
21Rotating Cylinder 961141638096114163809611416380961141638096114163809611416380
31Piston 961219440196121944019612194401961219430196121943019612194301
41O-ring, NBR 961199005296119900529611990052961199005296119900529611990052
5a1End Cap, period 0011– 961141633096114163309611416330961141633096114163309611416330
5a1End Cap, period 8301–0011 313570740131357074013135707401313570740131357074013135707401
61Retaining Ring 961140202196114020219611402021961140202196114020219611402021
71O-ring, NBR 961199039696119903969611990396961199039696119903969611990396
81Inner Spring 961199162996119916299611991629961199162996119916299611991629
91Outer Spring 961199163196119916319611991631961199163196119916319611991631
102Needle Bearing 961199123096119912309611991230961199123096119912309611991230
112Needle Bearing 961199123196119912319611991231961199123196119912319611991231
122Thrust Bearing 961199123696119912369611991236961199123696119912369611991236
141Thrust Plate 961141646096114164609611416460961141646096114164609611416460
151O-ring, NBR 961199123396119912339611991233961199123396119912339611991233
161Connex Pin 961199123596119912359611991235961199123596119912359611991235
171Coupling 961141644096114164509612044703961141644096114164509612044703
181Activating Ring, Noryl, with Screw 961141669096114166909611416690961141669096114166909611416690
191Water Rejector, period 8310– 961141775096114177509611417750961141775096114177509611417750

LKLA Ø85 Air/Spring — Altop End Cap and Service Kit

Applicable NC and NO configurations

Service Kit
Item Denomination OEM number
5b End Cap, Mark III, for Altop 9611416740
Kit Actuator Service Kit, Air/Spring 9611923010
Service Kit components are the catalogue positions marked as included: O-rings and the specified bearing elements. Springs, Piston, Coupling, cylinder parts and indication components are ordered separately.
LKLA · Ø85 · Air/Air

LKLA Ø85 Air/Air actuator spare parts

The double-acting Ø85 actuator uses common internal references across square-8, square-10 and square-12 valves, while the Coupling changes according to the Disc-Shaft square.

LKLA Ø85 Air/Air — square 8, 10 and 12

25–101.6 mm / DN25–DN100

Alfa Laval OEM
Pos.Qty.Denomination □ 8□ 10□ 12
11Air Cylinder961141758096114175809611417580
21Rotating Cylinder961141744096114174409611417440
31Piston961141752096114175209611417520
41O-ring, NBR961199005296119900529611990052
5a1End Cap, period 0011–961141633096114163309611416330
5a1End Cap, period 8301–0011313570740131357074013135707401
61Retaining Ring961140202196114020219611402021
71O-ring, NBR961199039696119903969611990396
102Needle Bearing961199123096119912309611991230
112Needle Bearing961199123196119912319611991231
121Thrust Bearing961199123696119912369611991236
141Thrust Plate961141757096114175709611417570
151O-ring, NBR961199123396119912339611991233
161Connex Pin961199123596119912359611991235
171Coupling961141755096114175609612044802
181Activating Ring with Screw961141669096114166909611416690
221Retaining Plate961141437096114143709611414370
232Threaded Plug961199122196119912219611991221

LKLA Ø85 Air/Air — Altop and Service Kit

Service Kit
ItemDenominationOEM number
5bEnd Cap, Mark III, for Altop9611416740
KitActuator Service Kit, Air/Air9611923011
Retaining Plate 9611414370 was supplied without holes up to catalogue period 8910; that older version is no longer available.
LKLA · Ø85 · Large Valves

LKLA Ø85 Air/Air for DN125 and DN150

The large-valve Ø85 Air/Air configuration uses dedicated Air Cylinder, Coupling, Connex Pin, O-ring and indication references for square-14 and square-15 valve shafts.

DN125 and DN150 actuator components

Disc □14 and Disc □15

Alfa Laval OEM
Pos.Qty.DenominationDN125 □14DN150 □15
11Air Cylinder96114174209611417420
21Rotating Cylinder96114174409611417440
31Piston96114175209611417520
41O-ring, NBR96119900529611990052
5a1End Cap, period 0011–96114163309611416330
5a1End Cap, period 8301–001131357074013135707401
61Retaining Ring96114020219611402021
71O-ring, NBR96119903969611990396
102Needle Bearing96119912309611991230
112Needle Bearing96119912319611991231
121Thrust Bearing96119912369611991236
131Connex Pin96119913149611991314
141Thrust Plate96114175409611417540
151O-ring, NBR96119900309611990030
161Connex Pin96119913139611991313
171Coupling96122856029611417471
181Activating Ring with Screw96114166509611416650
221Retaining Plate96114143709611414370
232Threaded Plug96119912219611991221

DN125–DN150 Air/Air Service Kit

Service Kit
ItemDenominationOEM number
5bEnd Cap, Mark III, for Altop9611416740
KitActuator Service Kit, Air/Air, DN125–DN1509611923012
LKLA · Ø133 · Air/Spring

LKLA Ø133 Air/Spring actuator — NC and NO

The Ø133 actuator serves square-12, square-14 and square-15 valve configurations. NC and NO versions use different Piston references, while most other internal components remain common.

LKLA Ø133 Air/Spring — OEM component matrix

101.6 mm / DN100, DN125 and DN150

Alfa Laval OEM
Pos.Denomination NC □12NO □12 NC □14NO □14 NC □15NO □15
1Air Cylinder961226850196122685019612268501961226850196122685019612268501
2Rotating Cylinder961226780196122678019612267801961226780196122678019612267801
3Piston961227000296122680029612270002961226800296122700029612268002
4O-ring, NBR961199236796119923679611992367961199236796119923679611992367
5End Cap, period 0011–961226750196122675019612267501961226750196122675019612267501
5End Cap, period 9001–0011961227140196122714019612271401961227140196122714019612271401
6Retaining Ring961226820196122682019612268201961226820196122682019612268201
7O-ring, NBR961199003596119900359611990035961199003596119900359611990035
8Spring Assembly961227010196122701019612270101961227010196122701019612270101
10Needle Bearing, qty. 2961199123196119912319611991231961199123196119912319611991231
11Needle Bearing, qty. 2961199235596119923559611992355961199235596119923559611992355
12Thrust Bearing, qty. 2961199234796119923479611992347961199234796119923479611992347
13Connex Pin961199235796119923579611992357961199235796119923579611992357
14Thrust Plate961226710196122671019612267101961226710196122671019612267101
15O-ring, NBR961199007996119900799611990079961199007996119900799611990079
16Connex Pin961199235896119923589611992358961199235896119923589611992358
17Coupling961227150196122715019612271502961227150296122715039612271503
18Indication Pin961227190196122719019612271901961227190196122719019612271901
19Water Rejector961141775096114177509611417750961141775096114177509611417750
21Air Fitting961199198896119919889611991988961199198896119919889611991988

LKLA Ø133 Air/Spring Service Kit

Service Kit
DenominationOEM number
Actuator Service Kit, Air/Spring9611923020
LKLA · Ø133 · Air/Air

LKLA Ø133 Air/Air actuator spare parts

The Ø133 double-acting actuator uses common cylinder, piston, bearing and sealing references across square-12, square-14 and square-15 valves. Coupling references remain size-specific.

LKLA Ø133 Air/Air — OEM component matrix

101.6 mm / DN100, DN125 and DN150

Alfa Laval OEM
Pos.Qty.Denomination□12□14□15
11Air Cylinder961226850196122685019612268501
21Rotating Cylinder961226780196122678019612267801
31Piston961226800196122680019612268001
41O-ring, NBR961199236796119923679611992367
51End Cap, period 0011–961226750196122675019612267501
51End Cap, period 9001–0011961227140196122714019612271401
61Retaining Ring961226820196122682019612268201
71O-ring, NBR961199003596119900359611990035
102Needle Bearing961199123196119912319611991231
112Needle Bearing961199235596119923559611992355
121Thrust Bearing961199234796119923479611992347
132Connex Pin961199235896119923589611992358
141Thrust Plate961228040196122804019612280401
151O-ring, NBR961199007996119900799611990079
162Connex Pin961199235796119923579611992357
171Coupling961228270196122827029612282703
181Indication Pin961227190196122719019612271901
221Retaining Plate961234860196123486019612348601
231Threaded Plug961199122196119912219611991221

LKLA Ø133 Air/Air Service Kit

Service Kit
DenominationOEM number
Actuator Service Kit, Air/Air9611923022
Selection Control

LKLA actuator identification checklist

Correct actuator identification requires more than valve size alone. Confirm every item below before selecting an OEM spare part or Service Kit.

Actuator diameter

Identify Ø85 or Ø133 from the installed actuator dimensions and OEM configuration.

Operating mode

Confirm Air/Spring NC, Air/Spring NO or Air/Air. Pistons and internal parts may differ.

Disc-Shaft square

Verify square 8, 10, 12, 14 or 15. The Coupling reference changes with this dimension.

Production period

End Cap references differ for older and newer actuator periods.

Control interface

State whether the actuator uses Altop, indication equipment or another control-head arrangement.

Valve family and size

Provide LKB, LKB-2 or LKB-F together with ISO/Inch or DIN nominal size.

Legacy square-size warning

Butterfly Valve 101.6 mm / DN100 units sold before period 8906 may use square 10. Older DN65 ISO valves sold before period 8910 may use square 8. Measure the installed Disc-Shaft square before ordering.

Next: LKLA-T actuator OEM tables

The next page part will cover LKLA-T Air/Spring and Air/Air versions, including Ø85 and Ø133 configurations and their dedicated Service Kits.

Request actuator identification
Valve Automation

Smart Butterfly Valve Automation for Hygienic Processing

Modern hygienic production lines demand more than simply opening and closing a valve. Manufacturers require continuous process monitoring, automatic position verification, reduced operator intervention and complete traceability. By combining pneumatic actuators with intelligent control heads, Butterfly Valves become fully automated process devices capable of integrating with PLC, SCADA and distributed control systems.

Higher Productivity

Automatic valve operation reduces manual intervention and supports continuous process sequences.

Improved Food Safety

Position verification helps prevent incorrect routing during production, CIP and SIP operations.

Process Reliability

Open and closed positions can be confirmed before the PLC advances to the next process step.

Predictive Maintenance

Diagnostic information supports faster fault finding and more structured maintenance planning.

Automation Philosophy

Evolution of Hygienic Butterfly Valves

Butterfly Valve technology progresses through three practical levels: manual operation, pneumatic actuation and intelligent valve automation.

1

Manual Valve

An operator rotates the Handle directly. The valve provides no remote command, no electronic feedback and no automatic sequence control.

2

Pneumatic Valve

Compressed air drives an LKLA actuator. An external solenoid valve controls the air supply, while separate sensors may report valve position.

3

Intelligent Valve

A control head combines sensing, indication, solenoid control and communication in one coordinated valve automation package.

Control Head Technologies

ThinkTop and IndiTop Automation Concepts

The correct control solution depends on the required level of valve intelligence, signal integration, local indication and pneumatic control.

ThinkTop

Integrated Intelligent Valve Control

ThinkTop combines valve position detection, pneumatic control, local status indication and electrical communication inside a compact top-mounted enclosure.

  • Integrated solenoid control
  • Valve position sensing
  • Automatic or guided setup, depending on generation
  • Local LED status indication
  • PLC and field communication options
  • Reduced external wiring and tubing
IndiTop

Compact Indication and Feedback

IndiTop is used where dependable valve position indication and straightforward electrical feedback are required without the full intelligence of an advanced control head.

  • Visual valve position indication
  • Electrical feedback options
  • Compact actuator-top installation
  • Suitable for simpler control architectures
  • Lower automation complexity
  • Practical retrofit potential
Automation Architecture

How an Automated Butterfly Valve Works

A complete automated valve system coordinates the production controller, control head, pneumatic actuator and hygienic valve body.

PLC / SCADA Issues valve commands and receives feedback
→
ThinkTop / IndiTop Processes signals and valve position information
→
LKLA Actuator Converts pneumatic force into quarter-turn movement
→
Butterfly Valve Opens, closes or isolates hygienic process flow
Command Signal

The control system sends an Open or Close instruction according to the process sequence.

Pneumatic Action

The solenoid directs compressed air to the LKLA actuator, rotating the valve Disc-Shaft.

Position Feedback

The control head confirms the actual valve position and returns its status to the PLC.

Next: Detailed Pneumatic and Signal Diagrams

Part 8A-2 continues with setup logic, LED indication, pneumatic flow paths, communication architecture and control troubleshooting.

Request Valve Automation Support

ThinkTop Operating Principle & Pneumatic Signal Flow

ThinkTop supervises the actuator, receives commands from the PLC, controls the integrated solenoid valve and confirms the final valve position. This section explains the logical sequence before the OEM spare-part tables.

Automation Signal Flow

PLC ThinkTop LKLA Actuator Valve Position Feedback

Auto Setup Sequence

1
Initialization

Power and compressed air are applied.

2
Travel Detection

The controller learns the actuator end positions.

3
Calibration

Open and closed references are stored.

4
Operation

Commands and feedback are continuously monitored.

Typical LED Indications

Green

Valve confirmed open / normal operation.

Yellow

Movement or setup in progress.

Red

Fault or unexpected position.

Blue

Configuration or service mode (model dependent).

Verified OEM References

Valve Automation Interfaces, Mounting Components and Service References

This section connects Butterfly Valve actuators with control and indication equipment. The tables below list only references explicitly verified in the Alfa Laval spare-parts catalogue.

!
ThinkTop and IndiTop identification rule

A control-head name alone is not sufficient for ordering. Generation, communication type, number of solenoids, electrical connection, actuator type and mounting arrangement must be confirmed from the unit label. Standalone control-head order numbers are therefore not presented as universal references.

ThinkTop

Intelligent valve control with position feedback, local indication and integrated pneumatic control options.

Digital I/O AS-i IO-Link

IndiTop

Compact valve indication and electrical feedback for simpler automation architectures.

Position Feedback Visual Status

LKLA-T Interface

Top-unit-compatible actuator configuration using dedicated activating rings, couplings and air fittings.

Ø85 NC / NO Air / Air
LKLA-T · Air/Spring · Ø85

Verified Automation-Interface Parts

For NC/NO LKLA-T actuator configurations covering Disc-Shaft square sizes 8, 10 and 12.

LKLA-T Air/Spring Ø85 — interface and service items

Catalogue references vary by valve size and Disc-Shaft square where shown.

Pos. Description Square 8 Square 10 Square 12 Engineering Note
17 Coupling 9611416440 9611416450 9612044703 Select by Disc-Shaft square.
18 Activating ring with screw 9611416690 9611416690 9611416690 Control/indication activation component.
20 O-ring, NBR 22340421 22340421 22340421 Included in marked service-kit scope.
21 Air fitting 9611991988 9611991988 9611991988 Verify tubing and thread arrangement.
— Actuator Service Kit, Air/Spring 9611923021 9611923021 9611923021 Recommended actuator spare.

Positioner interface references listed with LKLA-T Air/Spring

Positioner selection applies only to the actuator configurations indicated in the catalogue.

Pos. Description OEM Reference Notes
76 Positioner 8694, without display 9611995267 Complete positioner assembly as listed.
76 Positioner 8692, with display 9611995269 Complete positioner assembly as listed.
78 Adapter, complete 9611995338 Includes associated adapter components.
80 Special X-ring 9612569601 Positioner adapter sealing component.
81 Allen screw, quantity 2 9611993409 Adapter mounting fastener.
83 O-ring 9611995273 Adapter sealing component.
84 Gasket for adapter 9611995274 Positioner adapter gasket.
85 Puck sensor pad, complete 9611995275 Position sensing interface.
LKLA-T · Air/Air · Ø85

Verified Double-Acting Automation-Interface Parts

For LKLA-T Air/Air actuator configurations covering Disc-Shaft square sizes 8, 10 and 12.

LKLA-T Air/Air Ø85 — interface and service items

Use valve size and shaft square to select the correct coupling.

Pos. Description Square 8 Square 10 Square 12 Engineering Note
17 Coupling 9611417551 9611417561 9612044802 Dedicated Air/Air coupling references.
18 Activating ring with screw 9611416690 9611416690 9611416690 Common across listed sizes.
20 O-ring, NBR 22340421 22340421 22340421 Marked service component.
21 Air fitting 9611991988 9611991988 9611991988 Confirm pneumatic tubing arrangement.
23 Threaded plug 9611991221 9611991221 9611991221 Double-acting actuator component.
— Actuator Service Kit, Air/Air 9611923023 9611923023 9611923023 Recommended actuator spare.
Legacy Green Top · US Configuration

Verified LKB53-6XXXT Automation Mounting References

Legacy references must not be mixed with modern ThinkTop or IndiTop assemblies without physical verification.

LKB53-6XXXT Actuator for Green Top

Selected automation-related components verified in the catalogue.

Pos. Description OEM Reference Identification Note
5A Mounting adapter 303103 Legacy Green Top mounting configuration.
18 Activating ring, Noryl, with screw 9611416690 Actuation/indication interface.
29 Indication nut — proximity switch 762729 Select according to sensing technology.
29 Indication nut — microswitch 760551 Alternative legacy switch arrangement.
30 Retainer ring, quantity 2 750196 Associated indication assembly component.
Compatibility & RFQ Engineering

Information Required Before Ordering a Control Head or Mounting Kit

Similar-looking automation assemblies may use different pneumatic, electrical and mechanical configurations.

Control-Head Identification

  • Exact product family: ThinkTop, ThinkTop Basic, IndiTop or legacy Green Top
  • Full label photograph and serial/product number
  • Communication type: Digital I/O, AS-i, IO-Link or other
  • Supply voltage and electrical connector type
  • Number and function of integrated solenoid valves
  • Required feedback positions and sensing arrangement

Valve and Actuator Identification

  • Valve family and nominal pipe size
  • Actuator family: LKLA, LKLA-T or legacy actuator
  • Actuator diameter and Air/Spring or Air/Air operation
  • Normally Closed, Normally Open or Double Acting
  • Disc-Shaft square: 8, 10, 12 or other verified size
  • Photos of actuator top, coupling and mounting interface
i
OEM reference boundary

The catalogue confirms the interface, positioner, service-kit and legacy mounting references shown above. It does not provide one universal ThinkTop or IndiTop part number suitable for every valve. LGN therefore requires configuration evidence before quoting a complete control head.

Send the control-head label and actuator photographs

LGN can cross-check generation, communication, pneumatic function and mounting compatibility before quotation.

Request Automation Identification
Installation & Commissioning

Installing Hygienic Butterfly Valves, Actuators and Control Heads Correctly

Correct installation protects Seat life, prevents pipe stress, improves actuator alignment and ensures reliable position feedback during production, CIP and SIP operation.

1

Protect Valve Geometry

The valve body must not be used to pull misaligned pipework into position. Pipe strain can distort the body, overload the Seat and create uneven Disc contact.

2

Maintain Hygienic Drainability

Install the valve in an orientation that supports complete drainage and avoids product or cleaning liquid pockets around the body and actuator interface.

3

Verify Automation Compatibility

Confirm actuator mode, air pressure, coupling, mounting adapter, control-head generation and electrical communication before installation.

Mechanical Installation

Recommended Installation Sequence

The exact procedure must follow the instruction manual for the specific valve model. The sequence below is a practical engineering checklist for site preparation and commissioning.

1

Confirm valve identity

Check valve family, nominal size, connection standard, Seat material, pressure class, Disc-Shaft square and actuator configuration before removing protective packaging.

2

Inspect pipe alignment

Verify that mating pipe ends are concentric, correctly spaced and free from angular misalignment. The valve must enter the line without forcing the pipework.

3

Protect the Seat during welding

For weld-end installations, remove or protect heat-sensitive internal components according to the OEM procedure. Welding heat and metal particles must not damage the Seat or Disc surfaces.

4

Install the valve in the required orientation

Position the actuator and control head for access, drainage, safe tubing routes and visibility. Avoid locations where standing water can collect around electrical or pneumatic connections.

5

Tighten connections evenly

Clamp, flange or threaded connections should be tightened uniformly. Uneven loading may deform the body or create leakage at the pipeline connection.

6

Cycle the valve manually or pneumatically

Before process start-up, verify smooth travel from fully closed to fully open without abnormal resistance, rubbing, impact or delayed movement.

!
Never weld with the complete valve assembled unless the OEM procedure explicitly allows it

Excessive heat can permanently damage elastomers, deform the Seat and reduce hygienic performance. Follow the exact disassembly and welding instructions for the valve family.

Pneumatic Installation

Compressed-Air and Actuator Checks

Clean, dry and correctly regulated compressed air is essential for predictable actuator movement and reliable control-head operation.

Air-Supply Requirements

  • Use clean and dry instrument-quality compressed air.
  • Confirm available air pressure against the actuator specification.
  • Install suitable filtration and regulation upstream.
  • Keep pneumatic tubing short, protected and free from sharp bends.
  • Prevent water, oil and dirt from entering control-head air ports.
  • Verify exhaust paths are unobstructed.

Actuator Function Checks

  • Confirm NC, NO or Air/Air operation before connecting tubing.
  • Check that the fail-safe position matches the process requirement.
  • Verify full quarter-turn travel without mechanical binding.
  • Confirm coupling engagement with the Disc-Shaft.
  • Inspect actuator-top mounting and activating-ring alignment.
  • Check for air leakage at fittings and actuator seals.
Electrical & Control-Head Installation

ThinkTop and IndiTop Commissioning Checks

Control heads must be matched to the correct actuator interface and electrical architecture. Label data should be recorded before wiring.

Electrical Preparation

  • Verify supply voltage and connector type.
  • Confirm Digital I/O, AS-i, IO-Link or other communication.
  • Use suitable hygienic cable routing and strain relief.
  • Protect connectors from water ingress during washdown.
  • Follow the OEM wiring diagram for the exact generation.
  • Record serial and product numbers for future spare-part identification.

Setup and Feedback

  • Run the correct setup or calibration procedure.
  • Teach or verify fully open and fully closed positions.
  • Confirm LED indication agrees with actual valve position.
  • Check PLC commands and returned feedback signals.
  • Test fault response and loss-of-air behavior.
  • Verify the process sequence cannot advance on invalid feedback.
i
Generation-specific setup is essential

ThinkTop, ThinkTop Basic and IndiTop versions do not all use the same setup procedure, wiring arrangement or diagnostic logic. Always identify the exact model from the label.

Commissioning Record

Final Pre-Production Verification

Documenting the initial condition makes later maintenance, troubleshooting and spare-part selection considerably faster.

Site Commissioning Checklist

Complete each item before releasing the valve for hygienic production service.

Inspection Item Verification Expected Result Status
Valve identificationModel, size, standard and Seat material recordedMatches process specificationConfirm
Pipe alignmentNo mechanical forcing or visible distortionValve body remains unstressedConfirm
Disc movementCycle Open / Closed several timesSmooth quarter-turn movementConfirm
Closed positionVerify Disc and Seat contactNo abnormal resistance or visible offsetConfirm
Pneumatic leakageInspect actuator and fittings under pressureNo audible or measurable leakageConfirm
Fail-safe responseRemove command air or power as applicableValve moves to required safe positionConfirm
Position feedbackCompare local indication with PLC statusSignals agree with actual positionConfirm
CIP/SIP readinessReview orientation and drainabilityNo avoidable liquid pocketsConfirm
DocumentationRecord labels, photos and commissioning dateTraceable maintenance file createdConfirm

Need help verifying an installed valve?

Send valve, actuator and control-head label photographs together with pipe size, operating mode and application details.

Request Installation Support

Preventive Maintenance & Troubleshooting

Routine inspection extends service life, reduces unexpected shutdowns and preserves hygienic performance. Preventive maintenance should always follow the valve manufacturer's instructions and the plant maintenance program.

Routine Maintenance Checklist

  • Inspect Seat and Disc for wear or scoring.
  • Check external leakage around body and actuator.
  • Inspect pneumatic tubing and fittings.
  • Verify actuator travel and return position.
  • Confirm ThinkTop / IndiTop feedback agrees with valve position.
  • Replace worn seals using the correct OEM Service Kit.
  • Record maintenance date and valve serial number.

Recommended Inspection Intervals

  • Visual inspection: Weekly
  • Leakage inspection: Monthly
  • Seat and seal inspection: According to operating conditions
  • Actuator service: According to OEM recommendations and duty cycle
  • Control-head verification after electrical or pneumatic modifications
  • Review maintenance records after each shutdown

Troubleshooting Guide

Observed Symptom Possible Cause Recommended Action
Valve does not fully close Seat wear, foreign particles, incorrect actuator adjustment Inspect Seat, clean valve, verify actuator travel and coupling.
External leakage Damaged seals or loose clamp connection Replace seals with the correct Service Kit and verify clamp tightening.
Slow actuator movement Low air pressure, contaminated air or restricted tubing Inspect FRL unit, tubing and air supply.
No PLC feedback Incorrect wiring, sensor failure or configuration issue Verify electrical connections and control-head setup.
Valve oscillates during operation Unstable pneumatic supply or actuator fault Inspect regulator, solenoid valve and actuator condition.
Control-head LEDs indicate fault Calibration lost or configuration mismatch Repeat the setup procedure according to the specific ThinkTop or IndiTop generation.

Need help identifying a maintenance kit?

Send the valve model, actuator label, control-head label and photographs. LGN can help identify the correct OEM service components.

Request Maintenance Support
OEM Identification Guide

How to Identify the Correct Butterfly Valve, Actuator and Control-Head Parts

Correct spare-part selection depends on the complete equipment configuration. A single photograph or nominal valve size is usually not enough to confirm the correct OEM reference.

Minimum Information Required for Identification

  • Valve family: LKB, LKB-2, LKB-F, UltraPure, i-BFV or another verified model.
  • Nominal size: pipe outside diameter, inch size or DN designation.
  • Connection standard: Weld, Clamp, DIN, ISO, SMS or other end connection.
  • Disc-Shaft square: commonly 8, 10, 12, 14 or 15 mm depending on valve and actuator size.
  • Actuator details: LKLA, LKLA-T, diameter, Air/Spring, Air/Air, NC or NO.
  • Control-head details: ThinkTop, ThinkTop Basic, IndiTop, Green Top or other generation.
  • OEM label data: product number, serial number, year and electrical configuration.
  • Required item: individual component, Service Kit, actuator assembly, mounting kit or complete control head.

Photographs That Help Prevent Wrong Selection

Complete Valve Show valve body, actuator and installation orientation.
Valve Nameplate Capture all numbers, symbols and manufacturing details clearly.
Actuator Label Include actuator diameter, type and any laser-marked identification.
Control-Head Label Show generation, communication type, voltage and product number.
Disc-Shaft Interface Photograph or measure the square accurately after safe disassembly.
Required Spare Part Show the removed component from several angles with dimensions.
!
Do not identify parts by appearance alone

Components from different generations may look nearly identical but use different dimensions, materials, couplings, mounting arrangements or OEM references.

Need an OEM cross-reference?

Send the available labels, photographs, dimensions and operating details. LGN will review the complete configuration before preparing a quotation.

Request OEM Identification
Frequently Asked Questions

Hygienic Shut-Off Valve FAQ

Technical answers for Butterfly Valve selection, spare-part identification, actuator configuration, maintenance and automation.

What information is needed to identify an Alfa Laval Butterfly Valve spare part?

Provide the exact valve family, nominal size, connection standard, Disc-Shaft square, Seat material, actuator type and clear photographs of all available labels. A serial number or complete OEM part number is especially useful.

Can the valve size alone determine the correct Seat or Service Kit?

No. The same nominal size may exist in different valve families, standards and generations. The valve model, body design, connection standard and elastomer material must also be confirmed.

What is the difference between LKB, LKB-2 and LKB-F Butterfly Valves?

They belong to different product configurations and may use different body components, Disc-Shaft arrangements, Seats, actuators and spare-part references. LKB-F is commonly associated with flanged body configurations, while LKB and LKB-2 use their own dedicated component structures.

How do I choose between EPDM, NBR, FPM and Silicone Seats?

Seat selection depends on product chemistry, fat or oil content, cleaning chemicals, temperature, SIP conditions and required service life. EPDM is common in many food and water applications, while NBR, FPM and Silicone are selected for different chemical and temperature duties. Always confirm compatibility with the real process conditions.

What is the difference between NC, NO and Air/Air actuators?
  • NC: Normally Closed; the spring returns the valve to the closed position when air is removed.
  • NO: Normally Open; the spring returns the valve to the open position when air is removed.
  • Air/Air: Double Acting; compressed air is used for both movement directions.
Can one ThinkTop or IndiTop fit every Butterfly Valve actuator?

No. Compatibility depends on actuator family, mounting interface, activating ring, coupling, control-head generation, pneumatic configuration and electrical communication type. The exact unit label and actuator arrangement must be checked.

How can I identify the correct LKLA or LKLA-T coupling?

Confirm actuator type, operating mode, nominal valve size and Disc-Shaft square. Coupling references change between Air/Spring and Air/Air versions and between square sizes. Never select the coupling from actuator diameter alone.

Why does a Butterfly Valve leak after Seat replacement?

Possible causes include the wrong Seat material or size, incorrect installation, a damaged Disc edge, pipe stress, body misalignment, contamination, insufficient lubrication during assembly or actuator travel that does not reach the correct closed position.

How often should Butterfly Valve Seats and actuator seals be replaced?

There is no single interval for every installation. Replacement frequency depends on activation count, temperature, product chemistry, CIP/SIP conditions, pressure and storage time. Inspect regularly and follow the OEM maintenance guidance for the exact valve and actuator.

Is it better to order individual seals or a complete Service Kit?

A verified complete Service Kit is generally safer for planned maintenance because it groups the required wear components under one OEM reference. Individual parts may still be suitable when the exact component and configuration are fully confirmed.

Can a Butterfly Valve be welded into the pipeline while fully assembled?

Only when the exact OEM installation procedure explicitly permits it. In many cases, heat-sensitive parts must be removed or protected before welding to prevent damage to Seats, seals and internal surfaces.

What causes slow pneumatic actuator movement?

Common causes include insufficient air pressure, restricted tubing, blocked exhaust, contaminated compressed air, solenoid problems, internal actuator wear, incorrect tubing or mechanical resistance at the valve.

Why does the PLC show the wrong valve position?

The control head may require recalibration, sensor targets may be misaligned, wiring may be incorrect, the actuator may not complete its travel or the PLC logic may be assigned to the wrong input. Compare the actual valve position, local indication and returned signal.

Can legacy Green Top parts be replaced directly with ThinkTop parts?

Not without verification. Legacy mounting adapters, indication nuts, activating rings, electrical switches and actuator interfaces may differ from modern control-head configurations. A retrofit must be reviewed as a complete mechanical, pneumatic and electrical package.

What should be included in an RFQ for a complete automated Butterfly Valve?
  • Process medium and operating temperature
  • Line size and connection standard
  • Required valve family and Seat material
  • Operating pressure and available air pressure
  • NC, NO or Air/Air actuator requirement
  • Control-head family and communication type
  • Supply voltage and electrical connector
  • Required certificates and documentation
  • Quantity and delivery destination

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RFQ & Technical Support

Request Hygienic Shut-Off Valves, Actuators and OEM Spare Parts

LGN supports new valve supply, OEM spare-part identification, actuator selection, control-head compatibility, Service Kits and technical cross-referencing for hygienic process applications.

V

Complete Valve Supply

Butterfly Valves and hygienic Shut-Off Valve assemblies configured for process duty, connection standard, Seat material, actuator mode and automation requirement.

S

OEM Spare Parts

Seats, Disc-Shafts, body components, Handle assemblies, actuator components, Service Kits and verified automation-interface parts.

A

Automation Support

ThinkTop, IndiTop, LKLA-T, positioner and legacy interface review based on labels, photographs and confirmed pneumatic/electrical configuration.

Recommended RFQ Information

Providing complete technical information reduces identification time and helps prevent incorrect quotations.

For a Complete Valve

  • Process medium and application
  • Operating and cleaning temperature
  • Operating pressure and pressure direction
  • Nominal pipe size
  • DIN, ISO, SMS, Clamp, Weld or other connection
  • Required Seat material: EPDM, NBR, FPM, Silicone or other
  • Manual, NC, NO or Air/Air operation
  • Control-head and communication requirement
  • Required certificates and documentation
  • Quantity and requested delivery date

For Spare Parts or Service Kits

  • Exact valve family and nominal size
  • Existing OEM part number, if available
  • Valve and actuator serial numbers
  • Disc-Shaft square size
  • Actuator diameter and operating mode
  • Control-head generation and label data
  • Clear photographs from several angles
  • Dimensions of removed parts where practical
  • Required quantity for each item
  • Urgency and shutdown schedule
Documentation Center

Technical Files and Identification Resources

Use these resources to organize RFQs, record installed equipment and prepare maintenance requirements. Replace the placeholder links below with the final LGN file URLs when available.

Valve Identification Form

A structured form for recording valve family, pipe size, connection, Seat, Disc-Shaft, actuator and control-head details.

Download Form

Spare-Parts RFQ Checklist

A practical checklist for OEM part numbers, quantities, photographs, dimensions and required delivery information.

Download Checklist

Maintenance Record Sheet

A maintenance template for inspection dates, Seat replacement, actuator service and control-head verification.

Download Record

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LGN Hygienic Valve Support

Send Your Valve Inquiry for Technical Review

For the fastest identification, attach the valve, actuator and control-head labels, full assembly photographs and any available OEM references. LGN will review the configuration and prepare the most suitable supply or spare-parts proposal.

Send an RFQ Email LGN