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GEMÜ 658

Pneumatically operated diaphragm valve

  • Description
  • Features
  • Technical specifications
  • Accessories

The GEMÜ 658 and GEMÜ 688 diaphragm valves have a two stage actuator and are pneumatically operated. The actuator has a stainless steel housing and is controlled by two pistons working independently of each other. A stroke limiter is integrated as standard. Several body configurations are available for this valve.

  • Optional flow direction and installation position
  • CIP/SIP capable
  • Hermetic separation between medium and actuator
  • Extensive range of accessories
  • Connection: Clamp; Spigot; Threaded socket; Threaded spigot
  • Actuator: Pneumatic
  • ATEX
  • Explosion protection
  • Body material: 1.4408, investment casting; 1.4435, forged body; 1.4435, investment casting
  • Max. operating pressure: 10 bar
  • Max. media temperature: 100 ° C
  • Min. media temperature: -10 ° C
  • Nominal sizes: DN 10 (3/8''); DN 15 (1/2''); DN 20 (3/4'')

Fitting Accessories

Product video

How diaphragm valves with metal valve bodies work

00:29 min
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Online since 16.09.2015