The Wafer Check Valve (also known as a Non-Return Valve or NRV) is a compact, lightweight valve designed to prevent backflow in pipelines. With its space-saving wafer-type design, it fits easily between flanges and offers low pressure drop, fast closing…

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Wafer Check Valve is a type of non-return valve (NRV) that allows flow in one direction and automatically prevents reverse flow. It features a disc or plate that opens under forward pressure and closes quickly when flow reverses, effectively preventing water hammer and system damage.

The wafer-type construction provides a compact and lightweight alternative to conventional swing check valves. It is designed to be installed between standard flanges (PN10, PN16, or ANSI 150#), saving space and making it suitable for applications with limited installation area.

Manufactured in materials such as Cast Iron, Ductile Iron, Carbon Steel, Stainless Steel SS304 / SS316, and available with metal or soft seats (EPDM / Nitrile / PTFE), wafer check valves are used widely across industries like HVAC, water treatment, oil & gas, fire protection, and chemical processing.

Key Features:

  • Type: Wafer Type Non-Return Valve (NRV)

  • Sizes: ½” to 24” (DN15–DN600)

  • Body Material: Cast Iron / Ductile Iron / Carbon Steel / Stainless Steel (SS304 / SS316)

  • Disc Material: Stainless Steel / Bronze / Mild Steel

  • Seat Material: Metal / EPDM / Nitrile / PTFE (Teflon)

  • Pressure Rating: PN10 / PN16 / ANSI 150#

  • Design Standard: API 594 / ISO 5752 / EN 558

  • End Connection: Wafer Type (Fits Between Flanges)

  • Installation: Horizontal or Vertical Flow Direction

  • Operation: Spring Loaded Single or Dual Plate Design

  • Media: Water, Air, Oil, Steam, and Non-Corrosive Fluids

Advantages:

  • Prevents backflow automatically

  • Compact and lightweight design

  • Quick closing to reduce water hammer

  • Low pressure loss for efficient flow

  • Easy installation and low maintenance

  • Available in various materials for different fluids