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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)

HPW High Purity Diaphragm Valve, Plastic


HPW High Purity Diaphragm Valve, Plastic


The GEMU 677 HPW 2/2 way diaphragm valve has a low maintenance bonnet with an economically designed handwheel and an integral optical position indicator. All medium wetted parts are made of PFA (body) and PTFE (diaphragm).

  • Suitable for inert and corrosive liquid and gaseous media, particularly high purity media
  • All medium wetted parts and the housing are made of high quality plastic materials
    • Valve body: PFA-lnliner/PVDF-Outliner (carbon-filled)
    • Diaphragm material: PTFE/EPDM
  • Bonnet: PP glass fiber reinforced
  • Assembled, tested and packaged under class 100 cleanroom conditions
  • Good Kv / Cv value
  • Minimal deadleg
  • Optional flow direction, will seal in either flow direction up to full working pressure
  • Due to its design (diaphragm valve, i.e. soft flow deviation) also particularly suitable for polishing agents and slurries
  • Optional mounting position
  • Optional accessories
    • Electrical position indicator
    • Locking device



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