SI2 Series - Safety Valves

Product Type(s) : Relief Valves
Description :

Protection of tanks/vessels against excess pressure.



The spring-loaded full-stroke SI2 safety valve is approved for fluids and gases.


  • Hygienic design
  • Ideally suited for CIP applications
  • All product-contact parts finished to Ra 0.8 m.
  • Pneumatic or manual operation
  • The pneumatic seat lifting device can be equipped with proximity switches for feedback signals.
  • Quick and easy seal replacement
  • The nameplate details uniquely identify each valve.

The SI2 safety valve prevents the allowed operating pressure from being exceeded by more than 10%. If, after opening, the adjusted response pressure falls below max. 10% (gases) and max. 20 % (liquids), the valve closes. Nominal dimensions: DN 25 DN 100. Product contact parts are made of stainless steel AISI 316L / 1.4404 (DIN EN 100888). In addition, the valve can be supplied with manual or pneumatic seat lifting device.