Fluid handling, regulation and control

Fluid handling, regulation and control

Fluid handling, regulation and control

GEMÜ 653 2/2-way aseptic diaphragm valve


The GEMÜ 653 / 654 manually operated 2/2-way diaphragm valve has a stainless steel bonnet and is available in two versions: GEMÜ 653 has a handwheel in high temperature and chemically resistant plastic, GEMÜ 654 a stainless steel handwheel. The handwheel is non-rising (except diaphragm size 8) and has a standard optical position indicator.

The GEMÜ 653 / 654 manually operated 2/2-way diaphragm valve is available with two bonnet versions: Design D has concealed bolt mounting in the bonnet and is only suitable for 2/2-way bodies. Design T is suitable for T valve, Multi-port valve, Tank bottom valve and 2/2-way valve bodies.


  • Connection: Clamp; Flange; Spigot; Threaded socket; Threaded spigot
  • Actuator: Manual
  • ATEX
  • Explosion protection
  • Body material: 1.4408, PFA lined; 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


  • Suitable for inert, corrosive, liquid and gaseous media
  • CIP/SIP cleaning and sterilizing capabilities
  • Autoclave capability
  • Insensitive to particulate media
  • Surface finishes down to 0.25 µm, electropolished
  • Designed according to GMP (Good Manufacturing Practice)


  • The handwheel design allows minimal heat sink thus reducing the danger of burns injuries
  • The service life of the diaphragm is increased to a maximum by the patented optional seal adjuster (US-patent 6,691,737 B2)
  • Optional flow direction
  • Installation for an optimized draining is possible
  • Option – Lockable handwheel – Mounting for proximity switches for position feedback
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