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 Sandwich check valves (448 KB)


..... also available:

Sandwich-check valves for fastening between flanges, material: stainless steel

Many designs are possible -  ask us !

Our Sandwich check valves for fastening between flanges are available in optimized design.

Caused by the new constructed fixture from the flap they are in higher performance and provide a better function.



  • small total length
  • low weight
  • tight closing at low difference pressure
  • After utilization the elasticity of O-ring remains tightness metal/metal
  • standard equipment with adjustment for flap
  • eye bolt
  • for fastening between flanges acc. to DIN
  • universal application for gaseous or liquid mediums, in oil-, air-, gas- and water systems also used in the chemical industry
  • available in the material bronze, steel and AlBz with flap material CuAl, steel and stainless steel
  • available with and without spring


Technical date:

  • Nominal diameter: DN   40 up to DN 500
  • Working pressure: DN   40 up to DN 200   PN16
  • DN 250 up to DN 300   PN 10 / 16
  • DN 350 up to DN 500   PN 10
  • Betriebstemperaturen: NBR:   -40°C up to +100°C
  • FKM:   -30°C up to +200°C
  • PTFE: -50°C up to +260°C


Special designs:

  • metal/metal sealing
  • for fasteing between flanges acc. to ANSI, JIS


Further design are possible !  Please contact us !