diaphragm valve / pneumatic / shut-off / for pure water
C SISTO Armaturen S.A.



  • Type:


  • Operation:


  • Function:


  • Media:

    for pure water, for chemical products, for steam

  • Body:

    stainless steel

  • Applications:

    high-purity, for hygienic applications, for pharmaceutical applications

  • Other characteristics:

    with connection, corrosion-resistant, ANSI, for high-purity fluids, for flammable liquids, aseptic, with butt weld ends, chemical-resistant, 2/2-way, for compressible fluids, manually-operated, for corrosive fluids, rising stem, for dangerous fluids, with integrated positioner, with security, for aggressive media, zero-bleed, variable-flow, for hydrogen

  • Temperature:

    Max.: 160 °C (320 °F)

    Min.: -20 °C (-4 °F)


● Soft-seated shut-off valve
● Unique design with enclosed diaphragm
● Diaphragm with spiral support starting with size MD65
● With manual or pneumatic actuator
● Shut-off and sealing to atmosphere by diaphragm, therefore two components in contact with the fluid handled only:
body and diaphragm
● Body designs: 2-way valve body, T-pattern, Y-pattern, tank or multi-port valves
● Butt weld ends or clamped connection
● Drain angle indicated by laser marking
● Body materials: forged stainless steel and other alloy materials
● Diaphragm materials: EPDM, TFM/EPDM bonded, TFM/EPDM 2-piece
● Available nominal diameters: DN 6 – DN 200
● Operating temperature: – 20°C to + 160°C
● Permissible operating pressure: vacuum up to 16 barg/ optional 20 barg
● Suitable for applications up to a line pressure of 16 barg
● Increased operating reliability
● Self-draining
● No dead volume
● No contamination of fluid handled
● Suitable for CIP/SIP
● Maintenance-free