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Single Disc Check Valve58 of 59 check valvesPower Plant Check Valve
Check Valve

Dual Plate Check Valve

Datasheet

Download datasheet (PDF)

Specifications are indicative. Final specification is confirmed at quotation.

Specifications

Confirmed at quote
Size Range
DN50 to DN1600
Pressure Class
PN10, PN16, PN25, PN40, PN63, PN100, PN160, PN250, PN320, PN400, PN420, Class 150, Class 300, Class 400, Class 600, Class 900, Class 1500, Class 2500
End connection
Wafer
Operating temperature
-46°C to 200°C

Standards

Design & manufacture
API 6D, ASME B16.34, GB/T 12236, GB/T 12224 (P-T rating), API 607
Inspection & test
API 598, API 6D, GB/T 13927, JB/T 9092, GOST 9544
Fire safe
API 607
Face to face
ASME B16.10, GB/T 12221, EN 558
Mounting
ASME B16.5, ASME B16.47, GB/T 9113, JB/T 79, HG/T 20592, EN 1092, GOST 33259
Materials
ASME B16.34, GB/T 12224

Configure your variant(manually adjust box on the right if you require a different spec)

Size
Pressure
End connection

Materials

All available material options per part. Click a pill to set it in the configurator.

Body
Disc
Seat

Operating media

WaterSteamOil productsNitric acidAcetic acidStrong oxidising agentsPetroleumChemical mediaPharmaceutical mediaFertiliser process fluidsPower industry fluidsLow-temperature media

Typical applications

  • Petroleum industry pipelines
  • Chemical industry pipelines
  • Pharmaceutical industry pipelines
  • Fertiliser industry pipelines
  • Power industry pipelines
  • Low-temperature service pipelines
  • Horizontal and vertical pipeline installations
  • Installations with limited access space

Features

  • Two semicircular spring-loaded discs mounted on a central vertical pivot
  • Wafer-style connection for compact, lightweight structure
  • Disc opens from base first, minimising seal wear during opening
  • Short closing stroke with spring loading for rapid closure, reducing water hammer
  • Gradual closure as flow decreases; faster closure during backflow
  • Spring closes top of disc first, protecting disc base and prolonging seal life
  • Sealing surface options: wear-resistant weld overlay or rubber lining
  • Suitable for horizontal and vertical pipeline installation
  • Wide range of compatible media including oxidising agents and cryogenic fluids

Description

Dual plate check valve comprising two semicircular, spring-loaded discs mounted on a central vertical pivot within a wafer-style body. The disc opens from the base first under fluid force, minimising seal wear; spring force ensures gradual closure as flow reduces and rapid closure during backflow to mitigate water hammer. Sealing surfaces may be wear-resistant material welded to the body or rubber-lined.

Selection notes

This check valve is a dual plate pattern, supplied for wafer installation.

Sizes run DN50 to DN1600, in PN10, PN16, PN25, PN40, PN63, PN100, PN160, PN250, PN320, PN400, PN420, Class 150, Class 300, Class 400, Class 600, Class 900, Class 1500, Class 2500.

The body is offered in Carbon Steel, Stainless Steel and Alloy Steel, so the grade can be matched to the service rather than the other way round.

Seat and trim options are Wear-resistant overlay weld and Rubber lining. The seat, not the body, usually sets the temperature and medium limit, so confirm it against the service before ordering.

Stated service media include water, steam, oil products, nitric acid, acetic acid and strong oxidising agents.

It is catalogued for Water & Wastewater and Oil & Gas.

Working temperature is -46°C to 200°C.

Built to API 6D, ASME B16.34, GB/T 12236, GB/T 12224 (P-T rating) and API 607.

Available pressure classes

Pressure classes this product is rated to.

Class 150Class 300Class 400Class 600Class 900Class 1500Class 2500PN10PN16PN25PN40PN63PN100PN160PN250PN320PN400PN420

Used in

Water & WastewaterOil & Gas

Related guides

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Casted Check Valve configurations

View full Casted Check Valve system →
This product is part of the Casted Check Valve modular system. All configurations share the same hydraulically operated body: the control function is set by the pilot valve(s) attached. An existing Casted Check Valve body in the field can be reconfigured for a different duty simply by swapping the pilot, without replacing the body.

Slow-closing Check Valve

DN15 to DN400

Lifting Check Valve

DN50 to DN1200

Swing Check Valve

NPS 2" to NPS 48"

Y-Type Check Valve

DN15 to DN400

Stop Check Valve

DN50 to DN600

Single Disc Check Valve

DN50 to DN300

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