Alfa Laval SS Two Step Valve
Alfa Laval’s Unique SS two-step valve are use in dosing, two stage filling where the focus is on ensuring an exact volume or for draining of two pipes at the same time. Adjustable lifting height makes it possible to match specific volumes and quantities.
Alfa Laval Unique SSV Two Step is a versatile, reliable, pneumatic single seat valve with a single contact surface between the plug and the seat to minimize the risk of contamination. Unique SSV Two Step valve is very compact, modular and hygienic design meets the highest process demands in terms of hygiene and safety.
Built on the well-proven Alfa Laval Unique SSV Two Step valve platform, it is ideal for dosing and two-stage filling to ensure an exact volume or for draining of two pipes at the same time while reducing the risk of pressure shocks. Adjustable lifting height makes it possible to match specific volumes and quantities.
Few moving parts ensure easy dismantling, high reliability and low maintenance cost. A wide range of optional features enables customization to specific process requirements.
Unique SSV Two Step Valve Application
The Unique SSV Two Step is designed for dosing and filling in broad range of hygienic applications across the dairy, food, beverage, brewer and many other industries.
Unique SSV Two Step Valve Standard Design
The Unique SSV Two Step is available in a one- or two-body configuration, with easy-to-configure valve bodies, plugs, actuator and clamp rings. Unique SSV Two Step valve can be configured as a shutoff valve with two to three working ports, or as a changeover valve with up to five ports for drainage of two pipe simultaneously or in closing/filling applications.
To ensure flexibility, the valve seat that sits between the two bodies in the changeover version is provided for assembly. The valve seals are optimized for durability and long service life through a defined compression design. The actuator is connected to the valve body using a yoke, and all components are assembled with clamp rings. The degree of opening for the intermediate position can be adjusted by removing spacer rings inside the actuator.
The valve can also be fitted with the Alfa Laval ThinkTop V50 and V70 for sensing and control of the valve. Using the Alfa Laval Anytime configurator, it is easy to customize to meet virtually any process requirement.
Options
- Fully maintainable actuator
- High pressure actuator
- Product wetted seals in HNBR or FPM
- TR2 plug seal in PTFE for special applications
- Valve sensing and control devices, incl. ThinkTop, ThinkTop Basic and IndiTop
- Fittings in accordance with required standard
- External surface finish 3-A bright
Versatile and reliable single seat valve
Alfa Laval SS Two Step Valve 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 Two Step valve valve bodies, plugs and actuators to meet virtually any requirement.
Superior valve process safety
The SS Two Step Valve range is built on a proven modular platform used on more than a million valves in service worldwide. Pressed from a single stainless 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 SS Two Step Valve range is engineered to provided excellent hygiene and cleanability. With a fine surface finish, 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.
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
Thank 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.
Operating Principle
The Alfa Laval SS Two Step Valve is operated by means of compressed air from a remote location. The actuator smooths operation and an intermediate step protects process lines from pressure peaks while dosing and filling. The valve can be controlled using an Alfa Laval ThinkTop. The valve generally has two working ports for air supply in and for process air supply; for changeover valves, a third port is required.
