Fluid handling, regulation and control

Fluid handling, regulation and control

Fluid handling, regulation and control

GEMÜ R677 2/2-way plastic diaphragm valve


The GEMÜ R677 2/2-way diaphragm valve has a low maintenance plastic bonnet and is manually operated. All medium wetted parts, the bonnet and handwheel of the GEMÜ R677 2/2-way diaphragm valve are made of plastic. The low maintenance plastic bonnet has an ergonomically designed handwheel with integral optical position indicator. The High-Flow valve body provides compact dimensions at high flow rates.


  • Connection: Flange; Spigot; Union end
  • Actuator: Manual
  • Body material: ABS; PP; PP inliner / outliner; PVC-U, grey; PVDF; PVDF inliner
  • Max. operating pressure: 10 bar
  • Max. media temperature: 80 ° C
  • Min. media temperature: -20 ° C
  • Nominal sizes


  • Suitable for inert and corrosive liquid and gaseous media
  • Insensitive to particulate media
  • Optional flow direction and mounting position
  • Nominal pressure PN 10 / 150 PSI
  • Nominal size DN 15 – DN 100 / NPS 1/2“ – NPS 4“
  • Optical position indicator as standard
  • Bonnet housing in glass fibre reinforced PP
  • Valve body and diaphragm available in various materials and designs
  • Various connections available


  • Compact, lightweight construction and high performance
  • Good flow characteristics due to flow optimized valve body
  • Adjusted instrumentation
  • Good specific flow capability
  • Optional accessories

– Electrical remote indication that the valve is in the open position

– Lock out device

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