Construction
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.

Features
• 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

Advantages
• 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