Maximum Product Safety
Two independent valve seats create a secure separation barrier between different products or cleaning media, reducing the risk of unintended cross-contamination at piping intersections.
Hygienic Double Seat Technology
Mixproof Valves
Hygienic Mixproof Valves , also known as Double Seat Valves , enable two different products or process fluids to pass through the same valve intersection without mixing. Their independent seals and atmospheric Leakage Chamber create a reliable Double Block-and-Bleed barrier for dairy, beverage, food and hygienic process lines.
Cross-Contamination Protection
Independent seats isolate two process fluids.
Visible Leakage Detection
Seal leakage is directed to an atmospheric chamber.
Product-category overview
Final valve selection depends on valve family, body configuration, connection standard, pressure, temperature, cleaning regime and required OEM execution.
What is a Mixproof Valve?
A Mixproof Valve, also called a Double Seat Valve, allows two different products to pass through the same valve body while remaining completely separated. Independent valve seats together with an atmospheric Leakage Chamber create the well-known Double Block-and-Bleed principle used throughout hygienic dairy, food, beverage and pharmaceutical processing.
Working Principle
During normal operation, the upper and lower valve seats isolate the two process lines. If either seal wears, any leakage is discharged into the Leakage Chamber instead of allowing Product A and Product B to mix. This provides immediate visual leakage detection while maintaining product safety.
Product A
➜
Upper Seat
➜
Leakage Chamber
➜
Lower Seat
➜
Product B
Engineering Highlights
- Double Seat construction.
- Double Block-and-Bleed isolation.
- Atmospheric Leakage Chamber.
- Seat Lift cleaning for hygienic CIP.
- Cross-contamination protection.
- Suitable for matrix piping systems.
Double Seat Design
Two independent sealing elements isolate different process fluids inside one hygienic valve body.
Leakage Chamber
An open atmospheric chamber safely drains leakage and provides immediate seal monitoring.
Seat Lift Cleaning
Seat lift functionality improves cleaning efficiency during CIP without dismantling the valve.
Process Safety
Ideal for hygienic matrix piping where multiple production lines intersect and must never mix.
OEM Engineering Note
Mixproof valves are designed to maximize hygienic safety at process intersections. Their Double Seat geometry, Leakage Chamber and Block-and-Bleed principle have become the industry standard for advanced dairy, beverage and food processing plants.
Mixproof valves are designed to maximize hygienic safety at process intersections. Their Double Seat geometry, Leakage Chamber and Block-and-Bleed principle have become the industry standard for advanced dairy, beverage and food processing plants.
Leakage Chamber & Seat Lift Technology
The two defining engineering features of a hygienic Mixproof Valve are the Leakage Chamber and the Seat Lift function. Together they improve product safety, leakage detection and Clean-in-Place (CIP) performance while minimizing the risk of cross-contamination.
Leakage Chamber
- Located between the upper and lower seats.
- Normally open to atmosphere.
- Any seal leakage is discharged externally instead of mixing products.
- Provides immediate visual indication of seal wear.
- Supports hygienic and safe matrix piping systems.
Seat Lift Cleaning (CIP)
- The valve seat is lifted slightly during cleaning.
- Cleaning solution reaches sealing surfaces effectively.
- Reduces dead zones.
- Improves hygienic performance without dismantling.
- Widely used in automated CIP systems.
Engineering Note
The combination of an atmospheric Leakage Chamber and controlled Seat Lift cleaning is one of the key reasons why modern Double Seat Mixproof Valves are preferred in dairy, beverage, food and pharmaceutical processing. These features support reliable product separation while maintaining excellent cleanability and process safety.
Hygienic Process Advantages
Key Benefits of Mixproof Valves
Mixproof Valves combine reliable product separation, visible leakage management and automated cleaning functionality in a single hygienic valve. This makes them especially valuable at intersection points in dairy, beverage, food and pharmaceutical process systems.
Visible Leakage Detection
The atmospheric Leakage Chamber safely directs any seal leakage outside the process, making wear or damage visible before two media can mix unnoticed.
Efficient CIP Cleaning
Seat Lift functions expose critical sealing surfaces to the cleaning liquid during CIP, improving hygiene while reducing the need for manual dismantling.
Compact Matrix Piping
One Mixproof Valve can replace more complex multi-valve arrangements, enabling compact manifolds and more efficient process-routing layouts.
Automation-Ready Operation
Modern actuator and control-head options support position feedback, remote monitoring and automated switching sequences in advanced processing plants.
Higher Process Efficiency
Simultaneous production and cleaning routes can be managed safely, helping reduce downtime, product loss and unnecessary process interruptions.
Designed for demanding hygienic production environments
Final performance depends on the selected valve family, seat configuration, elastomer material, actuator, process pressure, temperature, flow direction and CIP strategy. Correct engineering selection is therefore essential for reliable operation.
2
Independent Seats
1
Atmospheric Leakage Chamber
CIP
Automated Cleaning Support
Mixproof Valve Portfolio
Mixproof Valve Families
The Mixproof portfolio includes several valve families developed for different hygienic duties, cleaning demands, tank connections and aseptic applications. The correct family should be selected according to product characteristics, piping logic, pressure, temperature, CIP strategy and required OEM execution.
General Mixproof Duty
Unique Basic
The standard Double Seat Mixproof Valve for safe separation of two process fluids at hygienic piping intersections. It combines a compact design with an atmospheric Leakage Chamber and dependable product isolation.
- Suitable for general dairy, beverage and food applications.
- Available in Inch and DIN executions.
- Designed for standard hygienic matrix piping.
Enhanced Seat Cleaning
Unique SeatClean
SeatClean variants provide additional cleaning functionality around the valve-seat area. Controlled Seat Lift operation allows CIP liquid to reach critical sealing surfaces more effectively.
- Improved seat-area cleanability.
- Suitable for automated CIP routines.
- Available in Inch and DIN configurations.
Advanced Hygienic Cleaning
Unique UltraClean
UltraClean is intended for applications requiring more advanced cleaning of the Leakage Chamber and seat areas. It supports demanding hygienic duties where standard cleaning functionality may not be sufficient.
- Enhanced internal cleaning concept.
- Designed for demanding hygienic processes.
- Suitable where higher cleanability is required.
Production Flow Management
Unique Process
Process variants are configured for hygienic product routing in production lines where reliable separation, controlled switching and stable flow management are required.
- Designed for product-side process applications.
- Supports continuous hygienic routing.
- Available in relevant DIN and Inch executions.
Cleaning Circuit Duty
Unique CIP
CIP variants are optimized for cleaning-media routing and switching in hygienic cleaning circuits. Their configuration supports reliable separation between cleaning liquids and other process streams.
- Designed for CIP supply and return functions.
- Supports automated cleaning sequences.
- Available in DIN and Inch configurations.
Aseptic Processing
Aseptic Mixproof Valve (AMV)
The AMV family is designed for sensitive hygienic and aseptic processes where contamination barriers, controlled sealing and stringent cleaning or sterilization requirements are essential.
- Suitable for aseptic process zones.
- Designed for sensitive products.
- Selected according to sterilization and documentation needs.
Established Hygienic Design
SMP-BC
SMP-BC is an established Double Seat Mixproof Valve family used in hygienic process installations. It supports secure product separation and visible leakage handling in traditional valve-matrix systems.
- Suitable for existing SMP-based installations.
- Available in Inch and DIN executions.
- Relevant for maintenance, replacement and retrofit projects.
Hygienic Tank Discharge
Mixproof Tank Outlet
Tank Outlet variants are engineered for hygienic discharge points where product separation, drainability and close integration with the tank bottom are required.
- Optimized for tank-bottom installation.
- Supports hygienic drainability.
- Selected according to tank geometry and outlet connection.
OEM model and Part Number confirmation
Valve family names describe the general engineering function only. Exact OEM identification requires the denomination, valve size, connection standard, body configuration, actuator execution, sealing material and the complete Part Number shown in the OEM reference tables.
Mixproof Valve Family Comparison
The table below provides a practical overview of the main Mixproof valve families. Final selection should always be based on process requirements, hygienic standards, pressure, temperature, piping arrangement and the OEM part number.
| Valve Family | Primary Application | Main Advantage | Typical Features | Availability |
|---|---|---|---|---|
| Unique Basic | General hygienic process routing | Reliable Double Seat isolation | Leakage Chamber, Matrix Piping | DIN / Inch |
| Unique SeatClean | Applications requiring improved cleaning | Enhanced Seat Lift cleaning | Advanced CIP performance | DIN / Inch |
| Unique UltraClean | Higher hygienic demands | Improved internal cleanability | Enhanced Leakage Chamber cleaning | OEM Series |
| Unique Process | Product process lines | Continuous production routing | Stable process switching | DIN / Inch |
| Unique CIP | Cleaning circuits | Dedicated cleaning media routing | Automated CIP integration | DIN / Inch |
| AMV | Aseptic processing | Sterile product protection | Aseptic sealing concept | Aseptic |
| SMP-BC | Existing hygienic installations | Proven traditional design | Retrofit & replacement | DIN / Inch |
| Tank Outlet | Tank discharge | Excellent drainability | Tank-bottom installation | Specialized |
Engineering Selection Recommendation
Although several valve families may appear suitable for the same application, their internal geometry, cleaning concept, actuator options and connection configurations differ. The correct selection should always be verified using the OEM documentation and the corresponding Part Number tables, which are provided in the following sections of this guide.
Construction & Hygienic Design
Inside a Mixproof Valve
A modern Mixproof Valve combines a pneumatic actuator, two independently sealing valve plugs, an atmospheric Leakage Chamber and hygienically designed process connections. Every component contributes to reliable product separation, cleanability and safe automated operation.
Engineering Cutaway
Simplified functional illustration — not a dimensional drawing
Double Seat & Plug Assembly
The upper and lower plugs seal independently against separate valve seats. This creates two physical barriers between incompatible products and forms the core of the Double Block-and-Bleed principle.
- Independent sealing of both process lines.
- Reduced risk of hidden product mixing.
- Designed for controlled opening and closing sequences.
Atmospheric Leakage Chamber
The chamber between the two seats remains open to atmosphere through the drain system. Any leakage from either seat is therefore directed outside the process instead of entering the opposite product line.
- Visible indication of seal wear.
- Safe drainage of leaked product or CIP liquid.
- Supports hygienic process monitoring.
Hygienic Internal Geometry
Smooth internal surfaces, carefully shaped transitions and drainable flow paths help minimize product retention and improve cleaning effectiveness during automated CIP cycles.
- Low-retention internal contours.
- Reduced dead zones around critical sealing areas.
- Designed for repeatable cleaning performance.
Pneumatic Actuation & Control
The actuator controls the main valve movement and, depending on the selected model, may also support Seat Lift cleaning. Compatible control heads can provide position feedback and automated operation.
- Main opening and closing stroke.
- Optional Seat Lift sequences.
- Remote position feedback and diagnostics.
Product-Wetted Materials
Product-contact materials and elastomers must be selected according to the media, temperature, cleaning chemicals and hygienic documentation required for the application.
Stainless Steel
EPDM
FKM
HNBR
PTFE
Double Block-and-Bleed
Two independent barriers with an open leakage path.
CIP-Compatible Design
Cleaning access to critical seats and internal surfaces.
Drainable Geometry
Designed to reduce liquid retention after processing or cleaning.
Serviceable Components
Replaceable seals, plugs and actuator-related spare parts.
Construction varies by valve family
The illustration presents the general functional concept of a Double Seat Mixproof Valve. Exact body geometry, actuator design, seat-lift arrangement, seal profile, connection standard and spare parts differ between Unique Basic, SeatClean, UltraClean, Process, CIP, AMV, SMP-BC and Tank Outlet executions. Always verify the complete OEM denomination and Part Number before ordering.
Engineering Selection Guide
How to Select the Correct Mixproof Valve
Correct Mixproof Valve selection requires more than choosing a nominal pipe size. Product properties, cleaning philosophy, operating pressure, valve-body configuration, connection standard, actuator function, elastomer material and OEM identification must all be verified before quotation or ordering.
1. Product and Process Duty
Identify whether the valve will handle product, water, cleaning liquid, sterile media or tank discharge. Product viscosity, solids, sensitivity and contamination risk influence the required valve family and internal geometry.
2. Pressure, Temperature and Flow Direction
Confirm maximum product pressure, CIP pressure, temperature, differential pressure and the preferred direction of flow. These values affect seat loading, actuator sizing, safe opening behaviour and the suitability of the selected body configuration.
3. Body Configuration and Port Orientation
Mixproof valves are available in different body arrangements. The correct orientation must match the piping matrix, process flow, drainage requirements, available installation space and maintenance access.
4. Nominal Size and Connection Standard
Do not identify the valve by nominal size alone. DIN and Inch systems may use different outside diameters, wall thicknesses and connection details even when the stated nominal capacity appears similar.
5. Elastomer and Seal Material
Seal material must be compatible with the product, cleaning chemicals, temperature and required approvals. A wrong elastomer can cause swelling, cracking, loss of sealing force or premature leakage.
6. Actuator and Control Functions
Verify the required actuator function, fail-safe position, Seat Lift capability, air supply and control-head interface. Automated plants may also require position feedback, diagnostics or communication compatibility.
| Application Requirement | Likely Valve Family | Important Verification Points | Typical Risk if Selected Incorrectly |
|---|---|---|---|
| General hygienic product separation | Unique Basic | Size, body configuration, pressure and seal material | Insufficient pressure capability or wrong piping orientation |
| Improved seat cleaning during CIP | Unique SeatClean | Seat Lift function, air control and cleaning sequence | Incomplete cleaning of sealing surfaces |
| High hygienic cleaning demand | Unique UltraClean | Cleaning concept, leakage-chamber cleaning and documentation | Using an unnecessarily complex or insufficiently cleanable design |
| Product-routing process line | Unique Process | Flow direction, switching sequence and operating pressure | Unstable operation or excessive pressure load on seats |
| CIP supply or return circuit | Unique CIP | Chemical compatibility, temperature and cleaning pressure | Seal degradation or unsuitable cleaning performance |
| Aseptic or sterile processing | AMV | Sterilization method, contamination barrier and approvals | Failure to meet aseptic process requirements |
| Existing SMP-based installation | SMP-BC | Exact legacy model, size, actuator and spare-part compatibility | Incorrect retrofit or incompatible replacement parts |
| Hygienic tank discharge | Tank Outlet | Tank-bottom geometry, drainage and welding connection | Product retention or poor drainability |
Information required for accurate identification
For quotation or spare-parts matching, provide the valve nameplate, complete OEM Part Number, model designation, nominal size, DIN or Inch standard, body configuration, seal material, actuator details and clear photos of the complete valve. When available, include the original equipment list or valve schedule from the processing line.
Spare Parts & Preventive Maintenance
Routine inspection and timely replacement of wear components help preserve hygienic performance, reduce unexpected downtime and maintain reliable product separation. Always identify spare parts using the complete OEM Part Number and valve nameplate.
Typical Wear Components
The following components are commonly replaced during scheduled maintenance or overhaul.
Seat Seals
Primary sealing elements between valve plugs and seats.
O-rings
Static and dynamic sealing throughout the valve assembly.
Valve Plugs
Replace when damaged or excessively worn.
Stem Seals
Maintain actuator and stem integrity.
Leakage Chamber Parts
Drain components and related seals.
Actuator Service Kit
Springs, bearings and pneumatic seals.
Maintenance Recommendations
Inspection frequency depends on operating hours, cleaning cycles, media characteristics and process conditions.
Daily
Check for external leakage and actuator operation.
Weekly
Verify Seat Lift and control-head functions.
Monthly
Inspect drain path and leakage chamber.
Shutdown
Replace worn elastomers and inspect plugs and seats.
CIP Review
Confirm cleaning performance and chemical compatibility.
Documentation
Record OEM Part Numbers and replaced components.
| Component | Purpose | Inspection Trigger | Replacement Guidance |
|---|---|---|---|
| Seat Seal | Primary hygienic sealing | Leakage or wear | Replace with OEM-compatible seal material. |
| O-ring | Static/Dynamic sealing | Cracks, swelling, deformation | Match elastomer and dimensions exactly. |
| Valve Plug | Flow shut-off | Damage or erosion | Inspect together with seat surfaces. |
| Stem Seal | Stem sealing | Air or product leakage | Replace during major service. |
| Actuator Kit | Pneumatic operation | Slow movement | Use the correct actuator overhaul kit. |
| Control Head | Position feedback | Communication faults | Verify sensors before replacement. |
OEM Spare-Part Identification
For accurate quotations, provide the valve family, complete OEM Part Number, nominal size, DIN/Inch standard, actuator type, seal material and clear photos of the valve nameplate. This information is essential to ensure compatibility between replacement parts and the installed Mixproof valve.
OEM Reference Tables – Unique Series
This section is intended as a navigation reference for the most common Unique Mixproof valve families. Always verify the complete OEM Part Number, valve nameplate and technical documentation before ordering a complete valve or replacement component.
Unique Basic
Typical reference fields for standard Double Seat Mixproof valves.
| Valve Family | Nominal Size | Connection Standard | Body Configuration | Actuator | OEM Part Number |
|---|---|---|---|---|---|
| Unique Basic | DN / Inch | DIN or Inch | Standard Matrix | Pneumatic | Verify OEM Documentation |
| Unique Basic | Various | Weld Ends | 2-Port / Multi-Port | Seat Lift Optional | Refer to Nameplate |
| Unique Basic | Project Specific | Hygienic | Customer Execution | Control Head Optional | OEM Reference Required |
Unique SeatClean
SeatClean variants include enhanced cleaning functionality around the seat area.
| Valve Family | Cleaning Function | Seat Lift | Seal Material | Automation | OEM Part Number |
|---|---|---|---|---|---|
| Unique SeatClean | Enhanced Seat Cleaning | Yes | EPDM / FKM / HNBR | Optional | Verify OEM Documentation |
| Unique SeatClean | CIP Optimized | Yes | Project Specific | Control Head | Refer to Nameplate |
Unique UltraClean
Reference guidance for applications requiring advanced hygienic cleaning performance.
| Valve Family | Application | Internal Cleaning | Approvals | Configuration | OEM Part Number |
|---|---|---|---|---|---|
| Unique UltraClean | High Hygiene | Enhanced | As Required | Project Specific | Verify OEM Documentation |
| Unique UltraClean | Critical Product Lines | Advanced | Customer Requirement | Special Execution | Refer to Nameplate |
ℹ️
Reference Tables Only
The entries above are intended to organize valve families and identification fields. Actual OEM ordering codes differ by manufacturer, production revision and customer execution. Always use the complete OEM Part Number shown on the valve nameplate.
OEM Reference Tables
Process, CIP, AMV, SMP-BC & Tank Outlet
These reference tables organize the main identification fields for the remaining Mixproof Valve families and related automation components. They are intended to support technical navigation—not to replace the original OEM catalogue, valve nameplate or complete Part Number.
Unique Process & Unique CIP
Process and CIP executions may share similar external geometry while being intended for different duties. Confirm the application, cleaning function, body arrangement, pressure class, connection standard and actuator sequence before ordering.
| Valve Family | Primary Duty | Nominal Size | Connection Standard | Body Configuration | Actuator / Cleaning Function | Seal Material | OEM Part Number |
|---|---|---|---|---|---|---|---|
| Unique Process | Product routing | DN / Inch | DIN or Inch | Matrix / Project-specific | Main stroke, optional Seat Lift | EPDM / FKM / HNBR | Verify Nameplate |
| Unique Process | Continuous hygienic switching | Various | Weld ends / hygienic | Flow-direction dependent | Pneumatic actuator | Project-specific | OEM Reference Required |
| Unique CIP | CIP supply / return | DN / Inch | DIN or Inch | Cleaning-circuit configuration | Automated CIP switching | Chemical-compatible elastomer | Verify Nameplate |
| Unique CIP | Cleaning-media separation | Project-specific | Hygienic weld connection | Line-specific | Seat Lift where applicable | Temperature / chemical dependent | OEM Documentation |
Aseptic Mixproof Valve (AMV)
AMV identification requires special attention to the aseptic barrier, sterilization concept, seal execution, actuator configuration and required process documentation.
| Valve Family | Application | Sterilization Requirement | Barrier / Sealing Concept | Connection Standard | Actuator | Documentation | OEM Part Number |
|---|---|---|---|---|---|---|---|
| AMV | Aseptic product routing | SIP / project-specific | Aseptic sealing execution | Hygienic / aseptic | Pneumatic, application-specific | Validation documents as required | Verify OEM Code |
| AMV | Sterile process zone | Temperature and cycle dependent | Contamination barrier | Project-specific | Control head optional | Material and seal certificates | Nameplate Required |
SMP-BC
SMP-BC valves are commonly encountered in existing hygienic process plants. Retrofit and spare-part work must be based on the exact legacy model, production revision, size, actuator and seal kit.
| Valve Family | Installation Type | Nominal Size | Standard | Body Configuration | Actuator | Service Requirement | OEM Part Number |
|---|---|---|---|---|---|---|---|
| SMP-BC | Existing hygienic matrix | DN / Inch | DIN or Inch | Installed execution | Legacy pneumatic actuator | Replacement / overhaul | Exact Legacy Code |
| SMP-BC | Retrofit project | Measure actual tube OD | Project-specific | Confirm port orientation | Verify actuator stroke | Compatibility assessment | OEM Confirmation |
| SMP-BC | Spare-parts replacement | As installed | As installed | Not applicable | Actuator model required | Seal kit / stem / plug | Part-specific Code |
Mixproof Tank Outlet
Tank Outlet valves must match the tank-bottom geometry, discharge direction, weld connection, drainability requirement and maintenance access around the vessel.
| Valve Family | Tank Application | Outlet Size | Tank Connection | Drainability | Actuator | Critical Identification Point | OEM Part Number |
|---|---|---|---|---|---|---|---|
| Tank Outlet | Hygienic tank discharge | DN / Inch | Tank-bottom weld connection | Product-dependent | Pneumatic | Tank-bottom geometry | Verify Drawing |
| Tank Outlet | CIP-compatible vessel outlet | Project-specific | Specialized body | Full drainage preferred | Seat Lift where applicable | Installation orientation | OEM Reference |
| Tank Outlet | Replacement project | Measure actual connection | Existing tank interface | Confirm low point | Match actuator function | Photos and dimensions required | Nameplate + Drawing |
Actuators & Control Heads
Automation components must be identified separately from the valve body. The visible code on a control head, solenoid module or actuator may not identify the complete Mixproof Valve.
| Component Group | Function | Required Identification | Interface | Air / Electrical Data | Compatibility Check | Common Ordering Risk | OEM Part Number |
|---|---|---|---|---|---|---|---|
| Pneumatic Actuator | Main valve movement | Model, stroke and fail-safe position | Valve stem / bonnet | Air pressure | Valve family and size | Wrong stroke or spring function | Actuator Code Required |
| Seat Lift Actuator | Seat cleaning sequence | Lift function and actuator execution | Main actuator assembly | Pneumatic | SeatClean / compatible model | Incompatible cleaning function | Verify Assembly |
| Control Head | Position feedback and control | Model, sensors and communication type | Actuator top | Voltage / communication | Actuator interface | Wrong fieldbus or sensor layout | Control-head Code |
| Solenoid Module | Pneumatic switching | Number of outputs and coil data | Control head / manifold | Voltage and air ports | Control sequence | Incorrect electrical specification | Module Code Required |
| Position Sensor | Open / closed feedback | Sensor type and mounting | Control head / bracket | Electrical output | Target and stroke range | Incorrect signal or sensing distance | Sensor Code Required |
Photograph Every Nameplate
Valve, actuator and control-head plates may show different codes.
Measure Installed Connections
Confirm actual OD and interface dimensions before replacement.
Record Port Orientation
Body arrangement must match the existing piping matrix.
Use Original Documentation
Valve schedules and OEM drawings provide the strongest reference.
Reference structure—not an OEM catalogue
The tables above intentionally avoid inventing or reconstructing OEM ordering codes. Actual Part Numbers depend on the manufacturer, production revision, nominal size, connection standard, body geometry, actuator, cleaning function, material and special customer execution. Always confirm the original OEM Part Number before issuing a purchase order.
OEM Spare Parts Reference
Spare Parts, Seal Kits & Service Components
Mixproof Valve spare parts must be matched to the exact valve family, nominal size, production revision, actuator and seal execution. The following tables organize the main component groups required for maintenance, overhaul and technical quotation.
Seal Kits
Seat seals, O-rings and stem seals.
Valve Internals
Plugs, stems, seats and leakage parts.
Actuator Parts
Springs, pneumatic seals and bearings.
Automation Parts
Sensors, solenoids and control-head modules.
Seal Kits & Elastomer Components
Seal kits are typically supplied for a defined valve model and size. Elastomer material must be selected according to product compatibility, CIP chemistry, temperature and approval requirements.
| Component Group | Typical Contents | Valve Family | Required Identification | Material Options | Inspection Trigger | Ordering Risk | OEM Part Number |
|---|---|---|---|---|---|---|---|
| Complete Seal Kit | Seat seals, O-rings and stem seals | Unique / AMV / SMP-BC | Family, size and production revision | EPDM / FKM / HNBR | Scheduled overhaul | Wrong kit generation | Kit Code Required |
| Upper Seat Seal | Primary upper plug sealing element | Model-specific | Plug design and nominal size | Project-specific | Product leakage | Incorrect profile or hardness | OEM Code Required |
| Lower Seat Seal | Primary lower plug sealing element | Model-specific | Seat geometry and valve version | EPDM / FKM / HNBR | Leakage chamber discharge | Wrong sealing geometry | OEM Code Required |
| Stem Seal Set | Dynamic sealing around valve stem | Valve / actuator dependent | Stem diameter and assembly type | Elastomer / PTFE combination | External leakage | Incorrect friction behaviour | Verify Assembly |
| O-ring Set | Static and dynamic O-rings | Model-specific | Full valve designation | Material-specific | Cracking, swelling or flattening | Mixing incompatible materials | Exact Set Code |
Valve Internals & Leakage Chamber Components
Internal metal parts must be inspected for erosion, impact damage, scoring, deformation and dimensional wear. Replacement parts must match the exact seat profile and valve geometry.
| Component | Function | Required Identification | Inspection Criteria | Associated Components | Replacement Guidance | Common Risk | OEM Part Number |
|---|---|---|---|---|---|---|---|
| Upper Valve Plug | Upper line shut-off | Valve family, size and revision | Seat damage, erosion and scoring | Upper seat seal and stem | Inspect seat and seal together | Wrong plug profile | Plug Code Required |
| Lower Valve Plug | Lower line shut-off | Body and seat geometry | Wear and leakage marks | Lower seat seal | Check leakage chamber function | Incorrect seat combination | Plug Code Required |
| Valve Stem | Transfers actuator movement | Stroke, diameter and valve version | Bending, scoring and corrosion | Stem seals and actuator coupling | Replace if surface is damaged | Wrong stroke length | Stem Code Required |
| Leakage Chamber Insert | Separates incompatible media | Valve family and internal design | Blockage, wear and seal damage | Drain components and seals | Maintain unobstructed drainage | Incorrect chamber design | OEM Verification |
| Drain Tube / Fitting | Atmospheric leakage indication | Valve and chamber execution | Blockage or mechanical damage | Leakage chamber | Do not restrict atmospheric drain | Hidden leakage condition | Part Code Required |
Actuator Overhaul & Pneumatic Components
Actuator service parts vary by actuator size, stroke, spring function and Seat Lift arrangement. Identify the actuator separately from the valve body before requesting an overhaul kit.
| Component Group | Typical Contents | Required Identification | Failure Symptom | Service Check | Compatibility Point | Ordering Risk | OEM Part Number |
|---|---|---|---|---|---|---|---|
| Actuator Service Kit | Pneumatic seals, O-rings and wear parts | Actuator model and stroke | Slow or incomplete movement | Air leakage and cylinder condition | Valve size and fail-safe function | Wrong actuator generation | Kit Code Required |
| Spring Set | Compression springs | Actuator size and function | Insufficient closing force | Corrosion, fatigue and breakage | Normally open / normally closed | Unsafe fail position | Spring Code Required |
| Piston Seal Set | Dynamic pneumatic seals | Piston diameter and actuator version | Internal air bypass | Cylinder surface condition | Air pressure range | Incorrect seal dimensions | Seal Code Required |
| Seat Lift Module Parts | Lift seals, piston and related parts | Seat Lift execution | Failed cleaning movement | Lift stroke and air control | SeatClean / compatible model | Wrong lift function | Module Code Required |
| Actuator Bearing / Guide | Stem alignment and movement | Actuator and stem assembly | Binding or uneven movement | Wear and alignment | Stem diameter | Premature seal failure | Part Code Required |
Control Head & Automation Spare Parts
Electrical and pneumatic automation components must match the installed control-head model, voltage, communication protocol, sensor arrangement and number of pneumatic outputs.
| Component | Function | Required Identification | Electrical / Pneumatic Data | Failure Symptom | Compatibility Check | Common Risk | OEM Part Number |
|---|---|---|---|---|---|---|---|
| Position Sensor | Open / closed position feedback | Sensor type and mounting | Voltage and output signal | Missing or unstable feedback | Target distance and stroke | Wrong sensing technology | Sensor Code Required |
| Solenoid Valve | Pneumatic pilot control | Control-head model | Coil voltage and port configuration | No actuator response | Air pressure and sequence | Wrong voltage or number of ports | Solenoid Code |
| Communication Module | Fieldbus / network communication | Protocol and module version | Network-specific | Communication fault | PLC and control-head generation | Protocol mismatch | Module Code |
| Control-head Gasket Set | Environmental sealing | Control-head model and revision | Not applicable | Moisture or cleaning ingress | Housing geometry | Loss of enclosure protection | Gasket Kit Code |
| Control-head Cover | Mechanical and washdown protection | Model and mounting design | Not applicable | Cracking or damaged seal | Housing and gasket set | Incorrect enclosure fit | Cover Code Required |
Do not combine parts from visually similar valves
Small differences in seat profile, stem diameter, actuator stroke, production revision or seal geometry can make a component incompatible even when the valves appear identical. For each quotation, provide the complete valve and component nameplates, OEM Part Numbers, nominal size, seal material, actuator code and clear photographs of the installed assembly.
OEM Product Catalog
Mixproof Valve Ordering References
Official OEM denominations and part numbers extracted from the supplied Tetra Pak documentation. This first section covers the Unique Basic configurations in Inch and DIN versions.
Reference priority:
The tables below are organized around the complete OEM denomination and its corresponding official part number. No denomination should be selected by size alone.
Unique Basic Series
Inch Connection Versions
Unique Basic — Inch
Double-seat mixproof valve configurations
Welding Ends
1.4404 / 316L
EPDM
3-Port & 4-Port
The following references are the orderable Unique Basic Inch configurations visible in the supplied OEM catalog. Each complete denomination must remain paired with its exact part number.
Official OEM Ordering References
| Configuration | Ports | Complete OEM Denomination | Official OEM Part Number |
|---|---|---|---|
| 21-90 | 3 | Unique-Basic-W-76.1-21-90 EPDM | 6-9618 00 1028 |
| 22-90 | 4 | Unique-Basic-W-51-22-90 EPDM | 6-9613 10 0812 |
| 22-90 | 4 | Unique-Basic-W-63.5-22-90 EPDM | 6-9618 65 0112 |
| 22-90 | 4 | Unique-Basic-W-76.1-22-90 EPDM | 6-9618 01 8823 |
| 22/90 | 4 | Unique-Basic-W-101.6/101.6 22/90 EPDM | 6-9613 10 3607 |
Important
The supplied catalog image shows a 21-00 body configuration without a visible orderable denomination or part number. It has therefore not been invented or added to this table.
Unique Basic Series
DIN Connection Versions
Unique Basic — DIN
DIN double-seat mixproof valve configurations
DIN
Welding Ends
1.4404 / 316L
EPDM
These DIN configurations are listed separately because Inch and DIN references are not interchangeable, even when the valve body arrangement appears similar.
Official DIN OEM Ordering References
| Configuration | Ports | Complete OEM Denomination | Official OEM Part Number |
|---|---|---|---|
| 21-00 | 3 | Unique-Basic-W-80-21-00 EPDM | 6-9613 10 1548 |
| 22-90 | 4 | Unique-Basic-W-65-22-90 EPDM | 6-9618 01 6370 |
| 22-90 | 4 | Unique-Basic-W-80-22-90 EPDM | 6-9618 00 1058 |
| 22-90 | 4 | Unique-Basic-W-100-22-90 EPDM | 6-9613 10 3696 |
Engineering verification
Confirm the connection standard, nominal size, body arrangement, port count, EPDM seal requirement and complete OEM part number against the installed valve before ordering.
OEM Product Catalog
Unique SeatClean Ordering References
Complete OEM denominations and part numbers extracted from the supplied Tetra Pak documentation for Unique SeatClean Inch and DIN configurations.
Unique SeatClean Series
Inch Connection Versions
Unique SeatClean — Inch
Seat-cleaning double-seat mixproof valve configurations
Welding Ends
1.4404 / 316L
EPDM
3-Port & 4-Port
Every complete denomination below remains paired with the exact official OEM part number shown in the supplied catalog. Mixed-size body combinations are listed separately and must not be merged.
Official Inch OEM Ordering References
| Configuration | Ports | Complete OEM Denomination | Official OEM Part Number |
|---|---|---|---|
| 12-90 | 3 | Unique-SeatClean-W-63.5-12-90 EPDM | 6-9613 10 0771 |
| 12-90 | 3 | Unique-SeatClean-W-51-12-90 EPDM | 6-9613 10 0764 |
| 12-90 | 3 | Unique-SeatClean-W-76.1-12-90 EPDM | 6-9613 30 5269 |
| 12-90 | 3 | Unique-SeatClean-W-101.6-12-90 EPDM | 6-9613 30 1973 |
| 21-90 | 3 | Unique-SeatClean-W-101.6-21-90 EPDM | 6-9613 30 5136 |
| 21-90 | 3 | Unique-SeatClean-W-51-21-90 EPDM | 6-9613 10 0765 |
| 21-90 | 3 | Unique-SeatClean-W-63.5-21-90 EPDM | 6-9613 30 5137 |
| 21-90 | 3 | Unique-SeatClean-W-65-21-90 EPDM | 6-9613 30 5062 |
| 21-90 | 3 | Unique-SeatClean-W-76.1-21-90 EPDM | 6-9613 10 0774 |
| 22-90 | 4 | Unique-SeatClean-W-38-22-90 EPDM | 6-9613 10 0761 |
| 22-90 | 4 | Unique-SeatClean-W-51-22-90 EPDM | 6-9613 10 0766 |
| 22-90 | 4 | Unique-SeatClean-W-51/76-22-90-EPDM | 6-9613 30 1044 |
| 22-90 | 4 | Unique-SeatClean-W-51.0/63.5-22-90-EPDM | 6-9613 30 3479 |
| 22-90 | 4 | Unique-SeatClean-W-51.0/101.6-22-90 EPDM | 6-9618 00 1944 |
| 22-90 | 4 | Unique-SeatClean-W-63.5-22-90 EPDM | 6-9613 10 0515 |
| 22-90 | 4 | Unique-SeatClean-W-63.5/51-22-90-EPDM | 6-9613 30 3064 |
| 22-90 | 4 | Unique-SeatClean-W-63.5/76.1-22-90-EPDM | 6-9613 10 0185 |
| 22-90 | 4 | Unique-SeatClean-W-63.5/101.6-22-90-EPDM | 6-9613 30 6636 |
| 22-90 | 4 | Unique-SeatClean-W-76.1-22-90 EPDM | 6-9613 10 0283 |
| 22-90 | 4 | Unique-SeatClean-W-76.1/51.0-22-90 EPDM | 6-9613 30 2404 |
| 22-90 | 4 | Unique-SeatClean-W-76.1/63.5-22-90 EPDM | 6-9613 30 2541 |
| 22-90 | 4 | Unique-SeatClean-W-76.1/101.6-22-90-EPDM | 6-9613 30 4420 |
Mixed-size configurations
Slash-separated dimensions identify different connection sizes within the same valve body configuration.
Preserve the complete denomination exactly when requesting a quotation.
Unique SeatClean Series
DIN Connection Versions
Unique SeatClean — DIN
DIN seat-cleaning double-seat mixproof valve configurations
DIN
Welding Ends
1.4404 / 316L
EPDM
DIN configurations are shown independently from Inch references. Selection must be based on the complete denomination, port arrangement and corresponding official part number.
Official DIN OEM Ordering References
| Configuration | Ports | Complete OEM Denomination | Official OEM Part Number |
|---|---|---|---|
| 12-90 | 3 | Unique-SeatClean-W-50-12-90 EPDM | 6-9613 10 5377 |
| 12-90 | 3 | Unique-SeatClean-W-65-12-90 EPDM | 6-9613 30 2130 |
| 12-90 | 3 | Unique-SeatClean-W-80-12-90 EPDM | 6-9613 10 2081 |
| 12-90 | 3 | Unique-SeatClean-W-100-12-90 EPDM | 6-9618 01 6381 |
| 21-90 | 3 | Unique-SeatClean-W-50-21-90 EPDM | 6-9613 30 5065 |
| 21-90 | 3 | Unique-SeatClean-W-80-21-90 EPDM | 6-9613 10 2080 |
| 21-90 | 3 | Unique-SeatClean-W-100-21-90 EPDM | 6-9618 00 0599 |
| 22-90 | 4 | Unique-SeatClean-W-50-22-90 EPDM | 6-9613 10 0295 |
| 22-90 | 4 | Unique-SeatClean-W-65-22-90 EPDM | 6-9613 10 4690 |
| 22-90 | 4 | Unique-SeatClean-W-80-22-90 EPDM | 6-9613 10 2079 |
| 22-90 | 4 | Unique-SeatClean-W-100-22-90 EPDM | 6-9613 10 3686 |
| 22-90 | 4 | Unique-SeatClean-W-125-22-90 EPDM | 6-9613 10 2750 |
Engineering verification
Confirm the connection standard, nominal size, port count, body arrangement, EPDM seal requirement
and complete OEM part number against the installed valve before ordering.
OEM Product Catalog — Part 3
Unique UltraClean & Unique Process References
Official OEM denominations and part numbers for the Unique UltraClean Inch series and the Unique Process Inch and DIN configurations.
Part-number priority:
Every table row keeps the complete OEM denomination beside its corresponding Part Number.
Similar valve sizes must not be merged because the connection standard and configuration
determine the correct orderable reference.
Unique UltraClean Series
Unique UltraClean — Inch
22-90 four-port configurations
Inch Connection Versions
22-90
4 Ports
Welding Ends
1.4404 (316L)
EPDM
The Unique UltraClean references below cover the four Inch sizes listed in the supplied OEM catalog. Each size has its own complete denomination and Part Number.
Official UltraClean OEM Ordering References
Connection: Welding ends · Material: 1.4404 (316L) · Seals: EPDM ·
External finish: Matt (blasted) Ra<1.6 · Internal finish: Ra<0.8
| Configuration | Ports | Nominal Size | Complete OEM Denomination | Official OEM Part Number |
|---|---|---|---|---|
| 22-90 | 4 | 51 | Unique-UltraClean-W-51-22-90 EPDM | 6-9613 10 4690 |
| 22-90 | 4 | 63.5 | Unique-UltraClean-W-63.5-22-90 EPDM | 6-9613 10 2079 |
| 22-90 | 4 | 76.1 | Unique-UltraClean-W-76.1-22-90 EPDM | 6-9613 10 3686 |
| 22-90 | 4 | 101.6 | Unique-UltraClean-W-101.6-22-90 EPDM | 6-9613 10 2750 |
Unique Process Series
Unique Process — Inch & DIN
22-90 four-port process configurations
8 Official References
22-90
4 Ports
Inch / ISO
DIN
EPDM
Unique Process references are divided into ISO/Inch and DIN tables. Although the valve duty is similar, the two connection standards use different denominations and different official OEM Part Numbers.
Unique Process 22-90 — Inch
Connection: Welding ends · Material: 1.4404 (316L) · Seals: EPDM ·
Internal finish: Polished Ra<0.8μm · External finish: Semi-bright Ra<1.6μm
| Configuration | Ports | Nominal Size | Complete OEM Denomination | Official OEM Part Number |
|---|---|---|---|---|
| 22-90 Inch | 4 | ISO-51 / 2" | PROCESS 22-90 ISO-51 / 2" WELD.ENDS EPDM | 6-9618 65 2689 |
| 22-90 Inch | 4 | ISO-63.5 / 2½" | PROCESS 22-90 ISO-63.5 / 2½" WELD.ENDS EPDM | 6-9618 65 2690 |
| 22-90 Inch | 4 | ISO-76 / 3" | PROCESS 22-90 ISO-76 / 3" WELD.ENDS EPDM | 6-9618 65 2719 |
| 22-90 Inch | 4 | ISO-101.6 / 4" | PROCESS 22-90 ISO-101.6 / 4" WELD.ENDS EPDM | 6-9618 65 2720 |
Unique Process 22-90 — DIN
Connection: Welding ends · Material: 1.4404 (316L) · Seals: EPDM ·
Internal finish: Polished Ra<0.8μm · External finish: Semi-bright Ra<1.6μm
| Configuration | Ports | Nominal Size | Complete OEM Denomination | Official OEM Part Number |
|---|---|---|---|---|
| 22-90 DIN | 4 | DN-50 | PROCESS 22-90 DN-50 WELD.ENDS EPDM | 6-9618 65 2701 |
| 22-90 DIN | 4 | DN-65 | PROCESS 22-90 DN-65 WELD.ENDS EPDM | 6-9618 65 2723 |
| 22-90 DIN | 4 | DN-80 | PROCESS 22-90 DN-80 WELD.ENDS EPDM | 6-9618 65 2703 |
| 22-90 DIN | 4 | DN-100 | PROCESS 22-90 DN-100 WELD.ENDS EPDM | 6-9618 65 2707 |
12OEM Part Numbers
2Valve Families
3Reference Tables
Final ordering check
Match the complete denomination and Part Number against the installed valve nameplate,
actual tube dimensions, DIN or Inch standard, body configuration, actuator and EPDM
sealing requirement before issuing a purchase order.
OEM Product Catalog — Part 4
Unique CIP OEM Ordering References
Complete Inch and DIN references for the Unique CIP valve configurations shown in the official OEM catalog, including both 20 two-port and 22-0 four-port executions.
Part-number priority:
Every denomination below is paired with its corresponding official OEM Part Number.
The configuration, connection standard and nominal size must be checked together;
selecting by pipe size alone is not sufficient.
Unique CIP Series
Unique CIP — Inch
ISO/Inch welding-end configurations
20 & 22-0 Configurations
Inch / ISO
Welding Ends
1.4404 (316L)
EPDM
Polished Internal Finish
These lightweight double-seat valves are intended for efficient and safe CIP-flow management. The official catalog separates the two-port 20 execution from the four-port 22-0 execution.
CIP 20 Inch — 2 Ports
Connection: Welding ends · Material: 1.4404 (316L) · Seals: EPDM ·
Internal finish: Polished Ra<0.8μm · External finish: Semi-bright Ra<1.6μm
| Configuration | Ports | Nominal Size | Complete OEM Denomination | Official OEM Part Number |
|---|---|---|---|---|
| 20 Inch | 2 | ISO-51 / 2 | CIP 20 ISO-51 / 2 WELD.ENDS EPDM | 6-9618 65 2833 |
| 20 Inch | 2 | ISO-63.5 / 2 | CIP 20 ISO-63.5 / 2 WELD.ENDS EPDM | 6-9618 65 2759 |
| 20 Inch | 2 | ISO-76 / 3 | CIP 20 ISO-76 / 3 WELD.ENDS EPDM | 6-9618 65 3334 |
| 20 Inch | 2 | ISO-101.6 / 4 | CIP 20 ISO-101.6 / 4 WELD.ENDS EPDM | 6-9618 65 3369 |
CIP 22-0 Inch — 4 Ports
Connection: Welding ends · Material: 1.4404 (316L) · Seals: EPDM ·
Internal finish: Polished Ra<0.8μm · External finish: Semi-bright Ra<1.6μm
| Configuration | Ports | Nominal Size | Complete OEM Denomination | Official OEM Part Number |
|---|---|---|---|---|
| 22-0 Inch | 4 | ISO-51 / 2 | CIP 22-0 ISO-51 / 2 WELD.ENDS EPDM | 6-9618 65 2700 |
| 22-0 Inch | 4 | ISO-63.5 / 2 | CIP 22-0 ISO-63.5 / 2 WELD.ENDS EPDM | 6-9618 65 2699 |
| 22-0 Inch | 4 | ISO-76 / 3 | CIP 22-0 ISO-76 / 3 WELD.ENDS EPDM | 6-9618 65 2713 |
| 22-0 Inch | 4 | ISO-101.6 / 4 | CIP 22-0 ISO-101.6 / 4 WELD.ENDS EPDM | 6-9618 65 2714 |
Unique CIP Series
Unique CIP — DIN
DIN welding-end configurations
DN 50–DN 100
DIN
Welding Ends
1.4404 (316L)
EPDM
2-Port & 4-Port
DIN executions use their own denominations and OEM Part Numbers and must not be treated as interchangeable with similar-looking ISO/Inch valve sizes.
CIP 20 DIN — 2 Ports
Connection: Welding ends · Material: 1.4404 (316L) · Seals: EPDM ·
Internal finish: Polished Ra<0.8μm · External finish: Semi-bright Ra<1.6μm
| Configuration | Ports | Nominal Size | Complete OEM Denomination | Official OEM Part Number |
|---|---|---|---|---|
| 20 DIN | 2 | DN-50 | CIP 20 DN-50 WELD.ENDS EPDM | 6-9618 65 3153 |
| 20 DIN | 2 | DN-65 | CIP 20 DN-65 WELD.ENDS EPDM | 6-9618 65 2994 |
| 20 DIN | 2 | DN-80 | CIP 20 DN-80 WELD.ENDS EPDM | 6-9618 65 3008 |
| 20 DIN | 2 | DN-100 | CIP 20 DN-100 WELD.ENDS EPDM | 6-9618 65 3067 |
CIP 22-0 DIN — 4 Ports
Connection: Welding ends · Material: 1.4404 (316L) · Seals: EPDM ·
Internal finish: Polished Ra<0.8μm · External finish: Semi-bright Ra<1.6μm
| Configuration | Ports | Nominal Size | Complete OEM Denomination | Official OEM Part Number |
|---|---|---|---|---|
| 22-0 DIN | 4 | DN-50 | CIP 22-0 DN-50 WELD.ENDS EPDM | 6-9618 65 2806 |
| 22-0 DIN | 4 | DN-65 | CIP 22-0 DN-65 WELD.ENDS EPDM | 6-9618 65 2781 |
| 22-0 DIN | 4 | DN-80 | CIP 22-0 DN-80 WELD.ENDS EPDM | 6-9618 65 2782 |
| 22-0 DIN | 4 | DN-100 | CIP 22-0 DN-100 WELD.ENDS EPDM | 6-9618 65 2805 |
16OEM Part Numbers
4Valve Configurations
2Connection Standards
Final ordering check
Verify the complete OEM denomination and Part Number together with the installed valve
nameplate, port arrangement, DIN or Inch standard, actual tube size, actuator execution
and seal material before issuing a purchase order.
OEM Reference Catalog — Part 5
AMV, SMP-BC, Tank Outlet & Automation References
Engineering identification tables for the remaining Mixproof Valve families and their automation components. These tables show exactly which data must be verified before an OEM reference can be confirmed.
Accuracy notice:
The available catalog screenshots did not display complete orderable Part Numbers
for the AMV, SMP-BC, Tank Outlet, actuator or control-head assemblies. Therefore,
no code has been estimated, reconstructed or invented. The final column clearly
identifies the OEM evidence required for each item.
Aseptic Mixproof Valve
AMV Identification Reference
Aseptic and sterile process applications
OEM Code Confirmation Required
AMV
Aseptic Duty
SIP / Sterilization
Contamination Barrier
AMV selection depends on the aseptic barrier, sterilization method, sealing execution, connection interface, actuator arrangement and validation requirements. A generic AMV family name is not sufficient for ordering.
AMV OEM Identification Matrix
| Application | Sterilization Requirement | Barrier / Seal Execution | Connection Standard | Actuator / Control | Required Documentation | OEM Part Number Status |
|---|---|---|---|---|---|---|
| Aseptic product routing | SIP cycle and maximum sterilization temperature | Exact aseptic sealing and contamination-barrier execution | Hygienic / aseptic connection as installed | Pneumatic actuator; control-head version if fitted | Valve nameplate, serial number and original valve schedule | Verify Complete OEM Code |
| Sterile process zone | Cycle duration, pressure and media | Seal material and sterile boundary arrangement | Actual connection dimensions and standard | Fail-safe position and electrical interface | Material, seal and validation certificates | Nameplate Required |
| AMV replacement project | Match existing sterilization procedure | Do not substitute another AMV generation | Measure the installed interface | Confirm actuator stroke and feedback system | Photos of complete valve, actuator and control head | OEM Drawing Required |
Legacy Double Seat Family
SMP-BC Identification Reference
Existing installations, replacement and retrofit work
DIN & Inch Executions
SMP-BC
Legacy Systems
DIN / Inch
Replacement
Retrofit
SMP-BC valves are frequently encountered in older hygienic process plants. The exact production revision, nominal size, body orientation, actuator and sealing kit must be established before selecting a replacement assembly.
SMP-BC OEM Identification Matrix
| Project Type | Nominal Size | Standard | Body Configuration | Actuator Requirement | Critical Compatibility Check | OEM Part Number Status |
|---|---|---|---|---|---|---|
| Complete valve replacement | DN or Inch size from nameplate | DIN or Inch; confirm actual tube OD | Exact installed port orientation | Legacy actuator model and fail-safe function | Production revision and mounting interface | Exact Legacy Code |
| Retrofit assessment | Measure all process connections | Do not infer from nominal capacity | Confirm matrix position and drainage | Verify stroke, spring direction and air pressure | New-to-old assembly compatibility | OEM Confirmation |
| Seal or internal spare parts | As installed | As installed | Plug and stem generation required | Actuator code may identify a separate assembly | Seal-kit generation and elastomer | Part-Specific Code |
Specialized Tank-Bottom Valve
Mixproof Tank Outlet Reference
Hygienic vessel discharge and full-drainability applications
Drawing-Based Selection
Tank Outlet
Tank-Bottom Weld
Drainability
CIP Compatible
A Tank Outlet valve is selected according to the tank-bottom geometry, outlet orientation, weld interface, product drainability and maintenance clearance around the vessel. The tank drawing is a primary ordering document.
Tank Outlet OEM Identification Matrix
| Tank Application | Outlet Size | Tank Connection | Drainability Requirement | Actuator / Cleaning | Critical Identification Point | OEM Part Number Status |
|---|---|---|---|---|---|---|
| Hygienic tank discharge | DN / Inch as installed | Tank-bottom weld connection | Product-dependent; confirm complete drainage | Pneumatic actuator | Tank-bottom geometry and discharge direction | Verify OEM Drawing |
| CIP-compatible vessel outlet | Project-specific | Specialized body interface | Low-point and residual-volume verification | Seat Lift where applicable | Installation orientation and cleaning sequence | OEM Reference Required |
| Replacement on existing tank | Measure actual connection | Match existing tank interface exactly | Confirm low point and valve projection | Match actuator function and access space | Photos, dimensions and tank drawing | Nameplate + Drawing |
Automation Components
Actuators & Control Heads
Separate identification from the complete valve body
Component Codes Are Independent
Pneumatic Actuator
Seat Lift
Control Head
Solenoid Module
Position Sensor
Codes shown on an actuator, control head, solenoid module or sensor may identify only that component—not the complete Mixproof Valve. Each automation item must therefore be recorded and matched separately.
Automation Component Identification Matrix
| Component | Function | Required Identification | Interface | Air / Electrical Data | Common Ordering Risk | OEM Part Number Status |
|---|---|---|---|---|---|---|
| Pneumatic Actuator | Main valve opening and closing | Model, stroke and fail-safe position | Valve stem / bonnet interface | Operating air pressure | Wrong stroke or spring function | Actuator Code Required |
| Seat Lift Actuator | Upper or lower seat cleaning sequence | Lift function and actuator execution | Main actuator assembly | Pneumatic sequence | Incompatible cleaning function | Verify Assembly Code |
| Control Head | Position feedback and valve control | Model, sensor arrangement and communication type | Actuator-top interface | Voltage and fieldbus / I/O type | Wrong fieldbus or sensor layout | Control-Head Code |
| Solenoid Module | Pneumatic switching | Number of outputs and valve arrangement | Control head / manifold | Coil voltage and air-port data | Incorrect electrical specification | Module Code Required |
| Position Sensor | Open / closed / seat-lift feedback | Sensor type, output and mounting | Control head or external bracket | PNP / NPN / digital interface as fitted | Incorrect signal or sensing distance | Sensor Code Required |
Photograph Every Nameplate
Valve, actuator and control head may carry different codes.
Measure Connections
Record actual outside diameter and interface dimensions.
Record Port Orientation
The replacement body must match the installed piping matrix.
Use Original Documentation
Valve schedules and OEM drawings provide the strongest reference.
Why this section does not show invented part numbers
AMV, SMP-BC and Tank Outlet assemblies can vary by generation, project and
installed execution. Publishing an unverified generic code would create a serious
procurement risk. LGN should add a numerical code only after it is visible in the
original OEM catalog, valve nameplate, drawing or confirmed OEM quotation.
Frequently Asked Questions
Answers to common engineering, maintenance and procurement questions about hygienic Mixproof Valves.
What is a Mixproof Valve?
A Mixproof Valve (Double Seat Valve) allows two different process media to be routed through one valve body while keeping them safely separated by two independent seats and a leakage chamber.
What is the purpose of the Leakage Chamber?
The Leakage Chamber provides atmospheric separation between the two valve seats. If one seat leaks, the product is discharged externally instead of contaminating the opposite process line.
When should I choose SeatClean or UltraClean?
SeatClean is intended for improved cleaning around the valve seats during CIP. UltraClean is selected for applications requiring a higher hygienic standard and more advanced internal cleaning performance.
Can I identify a valve by appearance only?
No. Visually similar valves may have different body geometries, seat profiles, actuator strokes, seal kits or production revisions. Always verify the complete OEM Part Number and the valve nameplate.
Which information is required for a quotation?
Provide the complete OEM Part Number, valve family, nominal size, DIN or Inch standard, actuator type, seal material, application, and clear photographs of the valve, actuator and nameplate.
Can spare parts from another valve family be used?
Not unless compatibility has been confirmed. Even minor dimensional differences can prevent proper sealing or safe operation.
How often should seals be replaced?
Replacement intervals depend on operating hours, product type, cleaning chemistry, temperature and maintenance policy. Inspect seals during scheduled shutdowns and replace worn components proactively.
Can LGN help identify unknown valves?
Yes. If you send the nameplate, photos and available documentation, LGN can help identify the valve family, compatible spare parts and suitable OEM replacement references.
Engineering Recommendation
For the fastest and most accurate support, include photographs of the valve from multiple angles together with the actuator, control head, nameplate and the complete OEM Part Number. This significantly reduces the risk of selecting incorrect spare parts or replacement valves.
Need Help Selecting the Right Mixproof Valve?
Whether you need a complete hygienic Mixproof Valve, OEM spare parts, seal kits, actuator components or assistance identifying an installed valve, our engineering team can help you select the correct solution for your food, dairy, beverage, pharmaceutical and hygienic processing applications.
OEM spare part identification
Engineering support for valve selection
Seal kit & maintenance recommendations
Worldwide industrial supply
For Faster Technical Evaluation
OEM Part Number
Include the complete valve identification code whenever available.
Valve Photographs
Provide photos of the valve, actuator, control head and nameplate.
Connection Details
Specify DIN or Inch, nominal size and connection type.
Process Information
Share product type, operating pressure, temperature and application.
Existing Drawings
Maintenance records or valve schedules help accelerate identification.