- Valve body material PVC-U
- Insensitive to particulate media
- Compact, lightweight construction, and high performance
- Good flow characteristics due to flow optimized valve body
- Proven long-life membrane actuator
- Leak detection hole
- Diaphragm easy to replace
- Adjusted instrumentation
- Stroke limiter and optical position indicator as option
- Actuator housing in glass fibre reinforced PP
- Suitable for corrosive, inert, gaseous and liquid media which have no negative impact on the physical and chemical properties of the body and diaphragm material
| Nominal size: | DN 15 – DN 50 / NPS 1/2” – NPS 2” (other sizes on request) |
| Connection: | Union ends with inch insert – BS (socket) (other connection standard on request) |
| Body configuration: | 2/2 way body |
| Valve body material: | PVC-U |
| Nominal pressure: | PN 10 / 150 PSI |
| Working medium temperature: | 10 to 60°C |
| Ambient temperature: | 10 to 50°C |
| Diaphragm material: |
EPDM PTFE/EPDM, one piece (other diaphragm materials on request) |
| Control function: | Normally closed (NC) Normally open (NO) Double acting (DA) |
| Accessories: | Stroke limiter + Optical position indicator |
The GEMÜ R690 2/2 way pneumatic PVC-U diaphragm valve has a low maintenance membrane actuator which can be controlled by air or inert gases. Normally Closed (NC), Normally Open (NO) and Double Acting (DA) control functions are available. All medium wetted parts and the actuator housing are made of high-grade plastic materials. The R690 comes with stroke limiters and optical position indicators as option. The optical position indicators for actuated valves indicate the open and closed positions while the stroke limiter are used when actuated valves are not to be fully opened. They are particularly suitable for limiting the maximum flow through a valve.