• Dutco Tennant LLC, PO Box 233, Dubai, U.A.E.
Pressure Relief / Pressure Sustaining Valve Sewage

In Pressure Relief Valves or pressure sustaining valve, the pilot senses the upstream pressure through a connection to the valve inlet. The control valve and pilot remain closed until the inlet pressure exceeds the pilot setting. The pressure sustaining valve opens rapidly to relieve damaging over-pressure and closes smoothly at an adjustable speed, when the pressure valve returns below the set-point. The upstream pressure is limited to the pilot set-point


  • Limits system pressure by relieving excess flow
  • Quick opening relief
  • Easily adjustable pressure setting

Typical Applications

  • Isolation valve
  • Booster pump
  • Pump suction Line

Technical Specification

  • Valve body Type : Globe Type/ Angle Type
  • Body : Ductile Iron ASTM A 536
  • Bonnet : Ductile Iron ASTM A 536
  • Available Sizes : 50mm – 1000mm
  • Stem : Stainless Steel 316
  • Diaphragm : EPDM
  • Strainer : Brass
  • Pressure Relief Pilot : Brass/Stainless Steel
  • Needle Valve : Brass
  • Tubing & Fittings : Copper, Brass,Stainless Steel
  • Pressure rating : PN10,PN16,PN25
  • Coating : Non Toxic Epoxy