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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)

Sanitary Diaphragm Valve, Pneumatically Operated

Type 687

Sanitary Diaphragm Valve, Pneumatically Operated


Nominal sizes 1”- 4” with stainless / reinforced polymer actuator 1/2”- 4” connections

Standard Features
  • Stainless steel / reinforced polymer actuator
  • Stainless steel actuator base
  • Fail closed, fail open, double acting
  • Compact low maintenance design
  • EHEDG certified sealing concept
  • Visual position indicator
  • Second generation PTFE or EPDM diaphragms
  • 316L stainless steel valve body
  • Integral buttweld tube extensions or triclamp
Available Options
  • Stroke limiter (adjustable travel stop open and close)
  • Electrical position indicators
  • DeviceNet or AS-I  network valve controls
  • Positioners
  • Manual override
Special connections 
-   Welded extensions (tube or pipe), 
-   ISO, DIN and other international standards 

Cluster valve assemblies, Zero Static T-valves, Duplex, Multiported, Tank Bottom/Side Sampling, and custom multiported block valves upon request.

AL-6XN® , Hastelloy® , and others available upon request.

Typical Applications
  • Pharmaceutical manufacturing
  • Bioprocessing
  • Cosmetic
  • Brewery Service
  • Food and Beverage
  • Semiconductor
  • High Purity Chemicals



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