Hygienic cleanability
Geometry designed to support effective CIP and reduce potential dead zones in sanitary lines.
CIPHygienic Design
Hygienic Valves — Seat Valves
Hygienic Seat Valves (Single Seat Valves)
Hygienic seat valves are designed for safe shut-off, change-over, and (when required) aseptic duty in sanitary process lines. This family includes standard single-seat designs, compact single-seat valves (SSSV), and dedicated variants for tank outlets, special piping layouts, and manual or automated operation.
Overview
A seat valve uses a hygienic sealing seat to isolate product flow. Depending on configuration, it can function as a shut-off valve (two ports) or a change-over valve (multiple ports). For aseptic service, dedicated sealing concepts are used to reduce contamination risk to the atmosphere side.
Typical applications
- Hygienic shut-off in product lines (dairy, beverage, food)
- Change-over between lines/tanks (routing product or CIP)
- Utility and CIP circuits in sanitary processing
- Aseptic processing (with the correct aseptic variant)
Main families
- SSV: standard single-seat range with multiple variants and larger DN options
- SSSV: compact single-seat valve for smaller line sizes and versatile duty
- LKAP: hygienic seat valve types commonly used for shut-off/change-over, with options
- Mini flow: compact valve for small flow paths and specific hygienic points
Key benefits
Designed to protect product integrity, reduce contamination risk, and simplify service in hygienic plants.
Flexible function
Shut-off or change-over configurations, with options for aseptic duty depending on process requirements.
Shut-offChange-OverAseptic
Service-friendly
Modular concepts and widely available spare parts to reduce downtime and make maintenance easier.
Easy ServiceUptime
Multiple connections
Connection standards and interfaces can be selected to match your piping and hygienic standards.
ClampWeldDIN/SMS
Seal & material options
Seal materials and elastomers selected based on temperature, chemistry and hygienic requirements.
EPDMFPMFDA/EC
Automation ready
Can be equipped with feedback/indication and control units to match plant automation needs.
AutomationFeedback
Models & complete range
Unique SSV — Standard
Standard hygienic single-seat valve range for shut-off and change-over duty, with multiple configurations.
SSVStandardCIP
Unique SSV DN125 (5")
Large-size single-seat valve option for higher flow capacity and larger hygienic lines.
DN125Large Size
Unique SSV DN150 (6")
Large-size single-seat valve option for maximum flow demand in sanitary applications.
DN150Large Size
Unique SSSV ISO 19.0 (3/4")
Compact single-seat valve for small line sizes and versatile hygienic service points.
SSSVISO 19.03/4"
LKAP-T
Hygienic seat valve type used for shut-off/change-over duty in sanitary pipelines (variant depends on build).
LKAPSeat Valve
LKAP-V
Hygienic seat valve type supporting sanitary shut-off and routing duties (variant depends on configuration).
LKAPHygienic
LKAP options
Common option sets for LKAP types: actuation, seals, connections, feedback, and installation kits.
OptionsActuationFeedback
SB Mini Flow Valve
Compact hygienic valve designed for small flow paths and tight installation points.
Mini FlowCompact
Unique SSV Tank Outlet Accessories
Accessories and kits for tank outlet execution—improving drainability, installation and service access.
Tank OutletAccessories
Ordering leaflet
Ordering reference for configurations, options and selection logic. (Use as ordering reference for your team.)
OrderingReference
Aseptic single-seat variants
For aseptic lines where atmosphere-side sealing concept and hygienic protection are required.
Aseptic DutyProtection
Change-over configurations
Multi-port configurations for routing product/CIP between tanks and process lines.
Change-OverMulti-Port
Tank outlet executions
Geometry optimized for tank discharge and drainability (selection depends on tank/nozzle design).
Tank OutletDrainability
Special bodies (Y-body / tangential)
Body shapes used when layout, headloss or installation constraints require alternative geometry.
Y-BodyTangential
Manual & regulating options
Manual operation or manual regulating versions for points without automation or where local adjustment is preferred.
ManualRegulating
ATEX option (if required)
Execution for hazardous areas, depending on site classification and regulatory requirements.
ATEXSafety
Quick comparison
A fast overview to help selection before final sizing and configuration.
| Family / Variant | Best for | Key advantages | Common options |
|---|---|---|---|
| SSV (standard range) | General hygienic shut-off and change-over | Wide range, hygienic design, automation-ready | Actuator (NC/NO), feedback, seals, connection standards |
| SSSV (compact) | Small lines, compact duty points | Compact footprint, flexible use | 2–3 ports, connection types, seal materials |
| Large size (DN125/DN150) | High flow demand | Higher capacity for larger hygienic lines | Actuation, feedback, seals, welding/clamp ends |
| Aseptic variants | Aseptic and sensitive processes | Reduced contamination risk to atmosphere side | Aseptic documentation, special sealing concepts |
| Tank outlet execution | Tank discharge points | Drainability & installation optimized | Accessories/kits, geometry selection, actuation |
| LKAP types | Hygienic routing and shut-off | Common hygienic seat valve family with options | LKAP option sets, feedback, actuation |
| Mini flow valve | Small flow paths | Compact and layout-friendly | Connection choice, seals, automation |
* Final selection depends on process pressure/temperature, product properties, hygienic requirements (CIP/SIP/aseptic),
connection standard and installation constraints.
Selection checklist
Send the following to receive the correct size, configuration, connection and sealing recommendation.
Process data
- Product / media type and hygienic sensitivity
- Process temperature and CIP/SIP temperature (if any)
- Operating pressure (and vacuum conditions if applicable)
- Function required: shut-off vs change-over (number of ports)
- Installation constraints: space, flow direction, service access
Build & options
- Actuation: pneumatic (NC/NO) or manual
- Seal / elastomer: EPDM / FPM / alternatives based on compatibility
- Connection standard: welding / clamp, and line standard (DIN/SMS etc.)
- Aseptic requirement & documentation (if required)
- Automation: indication/control unit, feedback requirements
Need a fast recommendation?
Send line size/connection, pressure & temperature, product/media type, and whether you need shut-off or change-over. We’ll propose the best hygienic seat valve configuration and options.
FAQ
Quick answers for selecting and using hygienic seat valves.
What is the difference between SSV and SSSV?
SSV is the standard single-seat range typically used on common line sizes with many variants. SSSV is the compact single-seat valve designed for smaller line sizes and tight installation points.
When do I need a change-over seat valve?
Use change-over when you must route flow between multiple lines or tanks (for product routing, diversion, or CIP selection). The required number of ports depends on your piping logic.
What makes a seat valve “aseptic”?
Aseptic variants use dedicated sealing concepts and execution details to reduce contamination risk to the atmosphere side. The full aseptic concept depends on the overall line design and hygienic validation requirements.
What information is needed for an accurate quotation?
Line size/connection, pressure and temperature, product/media, shut-off vs change-over requirement, and whether aseptic duty is needed. If automation is required, share NC/NO logic and feedback/control preferences.
Request a quotation & technical support
Share your process details and we’ll propose the correct hygienic seat valve configuration.
We size and configure the right seat valve for your line.
Send line size/connection, pressure & temperature, media type, required function (shut-off/change-over), and any aseptic/automation requirements. We’ll respond with a clear technical proposal.