GEMÜ 620

Pneumatically operated diaphragm valve

  • Description
  • Features
  • Technical specifications
  • Accessories

The GEMÜ 620 2/2-way diaphragm valve has a low maintenance membrane actuator made of metal or plastic and is pneumatically operated. The valve has a metal distance piece. Normally Closed (NC), Normally Open (NO) and Double Acting (DA) control functions are available.

  • Suitable for particulate and abrasive media
  • Various lining materials are available, such as PFA, PP or hard rubber
  • Standard optical position indicator
  • Wide range of adaptation options for add-on components and accessories
  • Media temperature :0 to 100 °C
  • Ambient temperature:0 to 60 °C
  • Operating pressure :0 to 10 bar
  • Nominal sizes:DN 15 to 150
  • Body configurations:2/2-way body
  • Connection types:Flange | Threaded connection
  • Connection standards:ANSI | BS | EN | ISO
  • Body materials:EN-GJL-250, cast iron material | 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 | EN-GJS-400-18-LT, SG iron material | EN-GJS-500-7, ductile iron material, PFA lined | EN-GJS-500-7, ductile iron material, PP lined
  • Body lining:Hard rubber | PFA | PP
  • Diaphragm materials:CR | EPDM | FKM | NBR | PTFE/EPDM | PTFE/FKM | PTFE/PVDF/EPDM
  • Conformities:CRN | EAC | FDA | TA Luft (German Clean Air Act)

Fitting Accessories

Boron Decontamination
Further applications

Product applications

Boron Decontamination

According to the World Health Organisation a boron content of >0.5 mg/l in drinking water is harmful. In addition, it has been shown that too high a boron content in water used for the irrigation of plants can also be harmful to humans and animals when these are eaten. Boron therefore presents a new challenge in the treatment of drinking water in addition to the previously known pollutants in drinking water. The application shown here presents a new and trend-setting process.