Description
The GEMÜ 687 pneumatically operated 2/2-way aseptic diaphragm valve has a low maintenance plastic membrane actuator and is pneumatically operated.
The GEMÜ 687 pneumatically operated 2/2-way diaphragm valve has a metal distance piece. Normally Closed (NC), Normally Open (NO) and Double Acting (DA) control functions are available.
TECHNICAL SPECIFICATIONS
- Connection: Clamp; Flange; Spigot; Threaded socket; Threaded spigot
- Actuator: Pneumatic
- ATEX
- Explosion protection
- Body material: 1.4408, PFA lined; 1.4408, investment casting; 1.4435, forged body; 1.4435, investment casting; EN-GJS-400-18-LT (GGG 40.3), PFA lined; EN-GJS-400-18-LT (GGG 40.3), PP lined; EN-GJS-400-18-LT, hard rubber lined
- Max. operating pressure: 10 bar
- Max. media temperature: 100 ° C
- Min. media temperature: -10 ° C
- Nominal sizes
- Pilot valve
- Control valve
FEATURES
- Suitable for inert and corrosive liquid and gaseous media
- Chemical resistance of actuator
- Stainless steel body with CIP/SIP cleaning and sterilising capabilities
- Insensitive to particulate media
- Valve body and diaphragm available in various materials and designs
- Various connections available
- Surface finishes down to 0.25 µm, electropolished
- Versions according to ATEX on request
- Optical position indicator is standard for control function 1
ADVANTAGES
- The modular actuator system permits a variety of options to be used such as tank bottom valves, T valves, sampling valves, multi-port valves and tandem welded configurations
- Optional flow direction
- Installation for an optimized draining is possible
- Optional accessories: – Stroke limiter – Optical position indicator control function 2 + 3 – Manual override (GEMÜ 1002, GEMÜ 1004) – Pilot valve with manual override (GEMÜ 0322 – 0326) – Electrical position indicators