Unique SSV aseptic valve for sterile process applications. A one-piece diaphragm provides hermetic sealing against intrusion from the atmosphere, ensuring full protection against the effects of microorganisms during processing. The special diaphragm offers modularity as it can be used with a broad range of the Unique SSV configurations – including standard, tangential, two-step, manual and tank outlet valves.
Versatile and reliable single seat valve
Alfa Laval Unique single seat valves (SSVs) are robust and reliable pneumatic seat valves that are supremely reliable and versatile.
Modularity provides cost-effective and nearly endless possibilities for purpose-built seat valves that meet high standards of hygiene and aseptic compatibility. Configure the Unique SSV valve bodies, plugs and actuators to meet virtually any requirement.
Our Selection Guide illustrates the many combinations of features and types available with the Unique SSV valve range.
Superior valve process safety
The Unique SSV range is built on a proven modular platform used on more than a million valves in service worldwide. Pressed from a single stainless steel disc, the valve body is extremely strong and durable, thus ensuring production safety. The enhanced performance of the actuator makes operation safer and more efficient.
Exceptional valve hygiene
The Unique SSV range is engineered to provide excellent hygiene and cleanability. With a surface finish of Ra ≤ 0.8μm, the smooth, weld-free valve body eliminates crevices that can trap bacteria. The design of the plug supports enhanced cleaning-in-place capabilities, and a double-acting lip seal that minimizes any risk of cross-contamination.
Alfa Laval Unique SSV valves meet most hygienic standards requested in the dairy, food and beverage, and personal care industries. The Unique SSV range is EHEDG-certified and authorized to carry the 3-A symbol. The range also provides full traceability in compliance with the EU Food Regulation 1935/2004.
Please refer to Documentation for more information.
Greater valve durability
To ensure high sealing quality, the Unique SSV range features defined compression of the O-rings with metal-to-metal contact between plug and seat. This significantly reduces wear and extends valve service life. The standard Unique SSV is supplied with a semi-maintainable actuator that has a five-year warranty.
Low total cost of ownership
Thanks to its straightforward, reliable design, the Unique SSV range provides long service life, reduced product loss, greater product safety and more processing uptime. Few moving parts reduce service requirements and inventory costs. More effective CIP procedures with reduced cleaning cycles and, subsequently, the reduced use of cleaning fluids, water and utilities also contribute to the Unique SSV’s low total cost of ownership.
The Alfa Laval Unique SSV range consists of one, two or three valve bodies, plug, sealing, actuator and clamp ring.
- Robust and reliable pneumatic seat valves
- Superior valve process safety
How it works
The Alfa Laval Unique SSV is an air-operated seat valve that is remotely operated by means of compressed air. The valve generally has two working ports for air supply in and for process air supply; for changeover valves, a third port is required.
Unique SSV Unique SSV
aseptic shut-off valve aseptic change-over valve
Unique SSV Aseptic
Fully modular with the proven design of the Unique SSV the aseptic single seat valve is equipped with a hermetic sealing diaphragm that ensures true aseptic conditions during operation. It hermetically seals against intrusion from the atmosphere and ensures full protection against the effects of microorganisms.
With a “sandwich construction” of PTFE on the product side, EPDM and an enforcing mesh, the aseptic diaphragm is optimized to guarantee reliable performance and long lifetime. In open position the one-piece diaphragm is mechanically supported by the valve to reduce wear and increase endurance.
The Unique SSV Aseptic valve is available in both pneumatic and manual configurations.
- Fully maintainable actuator
- High-pressure actuator
- Product wetted seals in HNBR or FPM
- Valve sensing and control devices, incl ThinkTop, ThinkTop Basic and IndiTop
- Fittings in accordance with required standard
- External surface finish 3-A bright
360° Service and maintenance videos
Alfa Laval Unique single seat valves - maintainable actuator
Alfa Laval Unique single seat valves – replace actuator bushing
Alfa Laval Unique single seat valves – product-wetted seals
Alfa Laval Unique single seat valves -replace product-wetted seals
Part of a broad valve range
- Alfa Laval LKAP
- Alfa Laval SB Mini Flow Valve
- Alfa Laval Unique SSV
- Alfa Laval Unique SSV Aseptic
- Alfa Laval Unique SSV ATEX
- Alfa Laval Unique SSV DN125 and DN150
- Alfa Laval Unique SSV Long Stroke
- Alfa Laval Unique SSV Manual
- Alfa Laval Unique SSV Reverse Acting
- Alfa Laval Unique SSV Tangential
- Alfa Laval Unique SSV Tank Outlet
- Alfa Laval Unique Two step
- Alfa Laval Unique SSV Y-body
For a broader valve range, explorer the different Alfa Laval valves: ball valves, butterfly valves, control/check valves, diaphragm valves, double seal valves, double seat valves, regulating valves, safety valves, sample valves and shutter valves.
Ten top tips - Valves
Here are some tips and service videos to show how you keep your hygienic valves in tip top condition
Alfa Laval's hygienic equipment combines high performance with gentle handling to preserve sensitive ingredients. Keeping up with the food industry trends and addressing four key challenges; supplying food products to consumers at a competitive price, getting the most from raw materials, reducing waste and emissions, and delivering safe and hygienic food products.
Alfa Laval's hygienic equipment product catalogue "Close at hand" includes product leaflets, performance curves, links to animations, brochures and price lists for ordering purposes.
Download the product models in Neutral or Native CAD file formats. It is also possible to download 3D PDF files.
Visit the animations site and take a look inside a product to see and understand how it works.