The two-way valve bodies have one single valve seat and are made of forged stainless steel material.

They are available with weld ends or clamps according to the standards (DIN 11850, ISO 4200/1127, ASME BPE).

Other connection types are of course also available, such as sterile flanges.

Product features

  • Unique chambered sealing system
  • Pressure limit up to 20 bar
  • Optimised hydraulic design
  • No dead volume
  • Allows complete draining
  • High-quality surface finish (polished or electropolished)
  • Drain angle visualised with laser marking
  • DN 6 to DN300
Actuated valve with butt weld ends
Manually actuated valve with clamps
Manually actuated valve with butt weld ends
Actuated valve with feedback unit
Actuated valve, DN 200


Here you can find a selection of 3D models
view here

We will be happy to provide you with further data on request


All documents downloadable and catalogue as flipbook (button on the right)

Measurement of the drain angle via smartphone

The simple installation aid for welding the SISTO-C two-way diaphragm valves in the correct self-draining angle.

Open App

Approvals & Certificates

  • Declaration of conformity DGRL 2014/68/EU

    PED 2014/68/EU

  • Certification

    CE certificate (2014/68/EU)

  • Certification

    ISO 9001

  • Certification

    ISO 14001

  • Certification

    ISO 45001