Bray Double Door Check Valve Product Thumbnail
1 / 1

Check Valve Double Door

Bray double door check valve, dual discs close quickly with tight sealing, reduces water hammer potential, suitable for pump protection on 2" to 12" pipelines

Request Quote Downloads

  • Genuine product assurance

    We can help verify product data and purchasing details.

  • Model confirmation

    Confirm model, connection and key options before ordering.

  • After-sales support

    After-sales communication support is provided according to the order agreement.

Product Overview

Dual disc check valve providing quick closing, tight sealing and reduced potential for water hammer

Energy-Saving Dual Disc Valve Design for Industrial Applications

Energy-efficient backflow prevention
The Bray/Rite double door check valve features lightweight dual discs, responsive independent springs and durable resilient seats for reliable performance in fluid-activated operations with tight shut-off sealing and reduced water hammer potential.
Features
Cost-effective design: Light weight, short face-to-face length, saving initial cost, small footprint, easy installation
Quick closing: Independent spring design enables quick closing and cushion sealing, reducing water hammer potential
Low opening pressure: Lightweight, spring-loaded discs with low opening pressure ensure energy-saving operation
Minimum head loss: Specialty body design provides short, straight flow path minimizing turbulence

Technical Specifications

ItemParameter
Size Range2” to 12” (50mm to 300mm)
Body MaterialDuctile iron, stainless steel
Temperature Range-50°F to 300°F EPDM, -40°F to 250°F Buna-N
Gasket MaterialPTFE
Maximum Allowable Working PressureClass 150
Seat MaterialEPDM, Buna-N
Seal ClassAPI 598
Disc MaterialSS316
Body TypeWafer swing
Design StandardAPI 594
CertificationCE, CRN, NSF-61, PED
Test StandardAPI 598
Face-to-Face LengthAPI 594
ApplicationPump protection, water hammer reduction

FAQ

How does the Bray/Rite double door check valve reduce water hammer risk during pump system shutdown or flow reversal?

The valve features lightweight dual discs and independent spring design. When flow decreases or reverses, the springs push the discs to close quickly, and the cushioned sealing reduces closing impact, thereby lowering the potential for water hammer. It is suitable for pump protection and pipelines requiring water hammer reduction.

What is the opening pressure and head loss performance of the double door check valve?

The lightweight disc combined with spring-loaded design enables low opening pressure, helping to reduce system energy consumption. The body features a short, straight flow path design to minimize turbulence and reduce head loss. Specific performance should be confirmed based on actual model and application conditions.

What sizes, body materials, and seat material options are available for the Bray double door check valve?

The size range is 2 inches to 12 inches (50 mm to 300 mm); body materials include ductile iron or stainless steel, disc material is SS316. Seat materials include EPDM and Buna-N, gasket material is PTFE. Specific configuration should be confirmed based on actual model and application conditions.

How to choose between EPDM and Buna-N seat for the double door check valve based on media temperature?

With EPDM seat, the temperature range is -50°F to 300°F; with Buna-N seat, the temperature range is -40°F to 250°F. Selection should consider media temperature, media compatibility, and system operating conditions to confirm the appropriate seat configuration.

What are the installation standards, pressure rating, and testing requirements for this double door check valve?

This product is a wafer swing check valve with face-to-face dimensions per API 594, design standard API 594, sealing and testing standard API 598, and maximum allowable working pressure Class 150. Product certifications include CE, CRN, NSF-61, and PED. Installation should ensure the valve model, pipe size, and application conditions are compatible.

Documents

Product Brochure - Double Door Check ValveProduct information · EnglishCheck Valve Sizing Program - CheckSize Check Valve Sizing ToolProduct information · English

Contact Us

Send model, duty, or sourcing request. We will respond with next step.

Full Contact Page