Manual Diaphargm Valves

The new Generation Diaphragm Valve of GF Piping System sets new standards regarding safety, efficiency and simplicity.

Instead of the commonly used four metal screws it has a central UNI0N nut - this non-corrosive connection is characterised by homogeneous temperature behaviour, an even surface pressure and high pressure rating up to 16 bar.

The optimal flow geometry offers double flow with same energy expenditure. With almost linear flow characteristics this guarantees stable processes.

Beyond that the weir of the branched valve has been moved directly to the pipe wall of the main line. Therefore dead leg was reduced to an absolute minimum and thus the hygiene was increased at the same time.

Standard equipment like a lockable handwheel, a two-coloured indicator and an interface for a self-adjusting limit switch set new standards in terms of user-friendliness.


  • Pneumatically actuated version available, see DIASTAR
  • Several customer specific executions can be generated via configurator
  • Self adjusting electrical feedback

  • chemical process industry
  • Food and Beverage
  • life science
  • Applications with high viscosity and solid content
  • measurement and control
  • Water treatment
  • microelectronics


Verwandte Produkte:
  • Type 514 - with true UNI0N connections
  • Type 515 - with spigot ends
  • Type 517 - with flange connections
  • Type 519 - branched valves


  • flow in either direction irrespective of installation position
  • integrated fixation system with mounted threaded inserts
  • corrosion resistant and high pressure rating
  • user friendliness due to lockable handwheel and two colour indicator
  • high efficiency due to doubled flow factor, linear valve characteristics
  • wide selection of material for best chemical resistance
  • suitable for slurries and abrasive media
  • smallest possible dead legs

Datasheet Diaphragm Valves Type 514, 515, 517 and 519 PDF-Dokument 743 Bytes Download
Data sheet diaphragm valve - Type 514, 515, 517 and 519.pdf PDF-Dokument 828,97 kB Download

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