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GEMÜ R690 40D 771293HDN 2/2 way plastic diaphragm valve
GEMÜ R690 40D 771293HDN 2/2 way plastic diaphragm valve

GEMÜ R690 40D 771293HDN 2/2 way plastic diaphragm valve

GEMÜ R690 diaphragm valves are primarily used for on/off and control applications in various industrial sectors, including:

  • Water Treatment Plants: Chemical dosing and flow control.
  • Chemical Industry: Control of aggressive and corrosive fluids.
  • Power Generation and Environmental Engineering: Management of various fluids.
  • Mechanical and Process Industry: General flow control applications.
  • Surface Treatment Plants: Chemical control in painting and coating processes.
  • Battery Production Plants: Chemical control in filling machines.
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GEMÜ R690 is a 2/2-way plastic diaphragm valve with a low maintenance pneumatic membrane actuator. Normally Closed (NC), Normally Open (NO), and Double Acting (DA) control functions are available. All wetted parts and the actuator housing are made of high-grade plastic materials that can be selected to suit the application. The flow-optimized body design ensures compact dimensions with high flow rates.
  • Type: Pneumatically actuated diaphragm valve
  • Body Configuration: 2/2-way body
  • Nominal Diameter (DN): 40 mm
  • Connection Type: Union end with DIN insert (socket)
  • Body Material: PP-H (grey liner), PP (outer layer, reinforced)
  • Diaphragm Material: EPDM
  • Actuator Type: Pneumatic membrane actuator, HDN (diaphragm size 40)
  • Control Function: Normally closed (NC)
  • Operating Pressure: 0 to 10 bar (depending on version and/or operating parameters)
  • Media Temperature: -10 °C to +80 °C (depending on version and/or operating parameters)
  • Ambient Temperature: -10 °C to +50 °C
  • Features:
    • Same face-to-face dimensions across multiple nominal sizes
    • Compact system design due to flow-optimized high-flow valve bodies
    • Reduced control air consumption
    • Modified spring sets available for applications with reduced control pressure
    • Optional optical or electrical position indicator
    • Easy to replace diaphragm
    • Leak detection hole