GEMU 698 Diaphragm Valve

Code: GEMU 698
  • Various Sizes
  • Electric Actuator With A Toothed Belt Drive
  • CIP/SIP Capable

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The GEMU 698 2/2-way diaphragm valve has a low maintenance motorised actuator with a reversible synchronous motor. A manual override and an optical position indicator are integrated as standard. The valve has a metal distance piece.


  • Suitable for inert and corrosive liquid and gaseous media
  • Chemical resistance of actuator
  • Stainless steel body with CIP/SIP cleaning and sterilizing capabilities
  • Insensitive to particulate media
  • Valve body and diaphragm available in various materials and designs
  • The valve stroke can be limited by means of adjustable limit switches
  • Suitable for use as a control valve (with GEMÜ 1283)


  • Hermetic separation between medium and actuator
  • Optional flow direction
  • Installation for an optimised draining is possible
  • Consistent control system and reliable opening and closing action
  • Direct 0/4 – 20 mA signal processing using the additional module GEMÜ 1283
  • Electrical position feedback by means of a potentiometer available as an option
  • Open/close function, positioner and process controller
  • Electrical position feedback by means of a potentiometer available as an option

Technical details

  • Connection: Clamp; Flange; Spigot; Threaded socket; Threaded spigot
  • Actuator: Motorized
  • Body material: 1.4408, PFA lined; 1.4408, investment casting; 1.4435, forged body; 1.4435, investment casting; EN-GJL-250; EN-GJS-400-18-LT (GGG 40.3), PFA lined; EN-GJS-400-18-LT (GGG 40.3), PP lined; EN-GJS-400-18-LT, hard rubber lined
  • Conformities: ; FDA; TA Luft (German Clean Air Act)
  • Max. operating pressure: 10 bar
  • Max. media temperature: 100 ° C
  • Min. media temperature: -10 ° C
  • Nominal sizes: DN 15 (1/2”); DN 20 (3/4”); DN 25 (1”); DN 32 (1 1/4”); DN 40 (1 1/2”); DN 50 (2”)
  • Sterilisation temperature: max. 150 °C

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Additional information

Weight0.09 kg