GEMU 643 Diaphragm Valve

Code: GEMU 643
  • Various Sizes
  • Manual Operation, Other Modes Available

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The GEMU 643 2/2-way tank bottom valve has a manual side mounted gear operator with a plastic handwheel. An integral optical position indicator is standard. The stainless steel valve body is machined from a single block (monoblock, no welded components) and is designed for welding directly into a tank bottom. The metal distance piece and the operator housing are made of stainless steel.


  • Suitable for inert and corrosive liquid and gaseous media
  • CIP/SIP cleaning and sterilising capabilities


  • The temperature resistant plastic handwheel prevents burns injuries at high operating temperatures
  • Compact design
  • Operator rotatable 360°
  • Tanks can be optimally drained, cleaned and sterilized by using the GEMU 643
  • Tank bottom valve body also available with pneumatic or motorised actuator on request
  • Versions according to ATEX on request
  • Handwheel shaft extension by the user is possible

Technical details

  • Connection: Spigot
  • Actuator: Manual
  • Body material: 1.4435, block material
  • 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”)
  • Sterilisation temperature: max. 150 °C

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Title Size
GEMU 643 Datasheet 690 KB

Additional information

Weight 0.09 kg