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GEMÜ is a German company founded since 1964, and a leading manufacturer of valves, measurement and control systems.

Today, Gemu is the world market leader of valves for sterile applications in the pharmaceutical and biotechnology industries.

Gemu offers the following range of products:
  • Aseptic Diaphragm Valves
  • Plastic Diaphragm Valves
  • Metal Diaphragm Valves
  • Butterfly Valves
  • Globe Valves
  • Control Valves
  • Solenoid Valves
  • Pilot Valves
  • Ball Valves
  • Check Valves
  • High Purity Products  (Valves, Flow, Pressure, Tubings & Fittings)
  • Positioners & Controllers
  • Electrical Position Indicators
  • Field Bus Systems
  • Actuators
  • Flowmeters (Rotameters)

Diaphragm Valve, Plastic


Diaphragm Valve, Plastic


The GEMU 667 pneumatically operated 2/2 way diaphragm valve has a low maintenance membrane actuator. All medium wetted parts and the housing are made of plastic.
Valve sizes DN 15 to DN 50 are self-opening due to integral springs (Control function 2), valve sizes DN 65 and DN 80 are opened by the pressure of the working medium on the diaphragm (Control function 5).

  • Suitable for inert and corrosive liquid and gaseous media
  • Valve body and diaphragm available in various materials and designs
  • Insensitive to particulate media
  • Various connections available

  • Optional flow direction, will seal in either flow direction up to full working pressure
  • Optional mounting position
  • Optional accessories
    • Stroke limiter with optical position indicator
    • Electrical position indicator (GEMU 1215), "Closed" position
    • Electrical position indicators with microswitches or proximity switches



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