PVC Valve

Back Pressure Valve

Back Pressure Valve - Aqua Connect
  • Nominal Size: 1/2" - 2"
  • Connector: Double union (ANSI), Socket ends
  • Diaphragm: PTFE, EPDM
  • Pressure setting range: 0.5 - 10.0 bar
  • Nominal pressure: PN 10 bar
  • Colour: PVC-U, PP, PVDF, 1.4571
  • Brands: Aqua Connect


  • Pressure setting range 0.5 to 10 bar
  • Diaphragm controlled pressure relief valve
  • Simple design, reliable function
  • Particularly suitable for oscillating pumps
  • Constant, frictionless, and low vibration control behaviour
  • High reproducibility of the set pressure
  • Simple pressure setting possible at any time, even during operation


  • Chemical plant engineering
  • Industrial plant engineering
  • Water treatment
  • Electroplating plants

Valve function

  • When the valve is closed in the position of rest, the diaphragm under the valve seat is only impinged by the low secondary pressure. Any rise in working or primary pressure lifts the diaphragm against the spring force. The valve opens and the pressure decreases

Valve setting

  • Can be adjusted easily across the entire pressure range
  • Can be secured against unauthorized opening by sealing


Back Pressure Valve Specification


Back Pressure Valve Dimension


  • The pressure relief valve, which is directly controlled by the medium, is used in technical processing plants for keeping pre-set working pressures constant on the primary side
  • The pressure relief valve can also be used as an overflow valve to prevent pressure peaks. In this case, the pressure relief valve is fitted in a bypass line
  • Pressure relief valves are not safety valves in the sense of the pressure vessel directive