Aseptic shut-off valves are used for the monitored control of fluids at aseptic tank applications. A welded stainless steel bellows is used to hermetically seal the product area from outside contamination. This special design and the durable valve seat seal, made of Tefasep®, enables optimum process security.
Housings for bottom-seat valves are available with one or two port connections. The valves are produced with standard butt-weld connections by default. Mixed port connection sizes can be delivered upon request as well as various aseptic pipe connections. Bottom-seat valve housings are available with pipe, welded flange or screwed flange connection to the tank.
The internal assembly is available with a shrunk or screwed valve seat seal. In addition to the standard sealing material Tefasep®, other sealing materials such as PTFE, EPDM, Viton®, etc., are also available.
The standard version of the pneumatic actuator is designed as spring-closing / air-opening (NC). Other available options include: air-closing / spring-opening (NO), air-closing / air-opening (LL), or with additional seat lifting function (AZ). In addition, the valve is available with a manual actuator (HK).
Due to its solid construction, the GEA clamp enables a pressure stable and safe connection of the main components. The special design with three segments allows a service-friendly handling of the component, even under tight space conditions.
Aseptic bottom-seat valves can be either equipped with open feedback units or T.VIS® feedback systems by default. Feedback units from third party suppliers can be mounted via specially designed adaptors.
Higher closing pressures, other materials, higher surface qualities and higher operating temperatures are available upon request.