Product Type: PROCESS VALVES Especially suitable for use in brewing, drinks technology, dairy, food, chemical and pharmaceutical industries.

The spring-loaded, full stroke safety valves DELTA SI 2 are approved for fluids and gases. They are used where containers or tanks have to be secured against excess pressure. As a result of their hygienic design they are especially suitable for use in brewing and drinks technology, the dairy industry, the food industry, the chemical and pharmaceutical industries. 

Main advantages 

  • Hygienic design
  • Ideally suited to CIP applications
  • All product-contact parts finished to Ra <= 0.8µ
  • Pneumatic or manual operation
  • The pneumatic seat lifting device includes the facility for feedback signals from proximity switch
  • Quick and easy seal replacement
  • The nameplate details uniquely identify each valve

The new safety valves DELTA SI 2, are approved by the TÜV, for fluids and gases, they meet the requirements of the Pressure Vessels codes, AD-leaflet A2 and the VdTÜV leaflet Safety Valve 100. This means that the valve design prevents the permitted operational pressure being exceeded by more than 10%. If the minimum set pressure after opening falls short by a maximum of 10% in the case of gases and a maximum of 20% in the case of fluids, the valve closes. 
Safety valves DELTA SI 2 can be supplied in nominal diameters of DN 25 to 100. The valves are manufactured in stainless chrome nickel steel, all product-contact parts are made of material 1.4571. The housing is in accordance with AD leaflet A4 and TRB 801 No. 45.

Safety valves are supplied with flanges with a 3.1.B certificate. The standard material of the seals is EPDM. Alternatively silicon and FPM are available. An FDA and a BGA licence is available for EPDM and silicon.

The safety valves DELTA SI 2 may be fitted with manual or pneumatic controls.

Valves can be supplied with manual or pneumatic seat lifting device. A proximity switch and valve position indicator may be incorporated.

The valve may be cleaned up to the valve stem via a CIP nozzle, supplied as an optional accessory, this is fitted in a pipe adapter below the valve.