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Double plate Flange Check Valve

The double-disc wafer body check valve adopts a flange body design and has a relatively short face-to-face dimension. Double disc spring loaded to provide low cracking pressure.
Every Wafer Style Double Door Check Valve with Retainerless Valve that we ship is tested to API 598 and must meet or exceed all applicable API, ANSI and ASTM standards.

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Double Plate Flange Check Valve is designed for efficient backflow prevention in industrial piping systems. With a dual-plate structure and flange-end connection, this check valve combines fast response, reliable sealing, and ease of installation. It is widely used in water supply, wastewater treatment, petrochemical, power generation, and HVAC systems.

The valve body is typically made from ductile iron, cast steel, or stainless steel, and can be paired with EPDM, NBR, or metal seats depending on the media and operating temperature. Its corrosion-resistant coating ensures durability in harsh environments, including marine, chemical, and industrial applications.

Designed with flanged ends conforming to DIN, ANSI, or JIS standards, the double plate flange check valve allows for secure mounting between pipeline flanges and is easy to remove for inspection or replacement. The compact construction saves space, while the non-slam closing action minimizes water hammer and vibration within the pipeline.

This valve supports both horizontal and vertical (upward flow) installations, offering flexibility across a wide range of engineering systems. It is available in pressure classes from PN10 to PN40 and sizes ranging from DN50 to DN600 or more, meeting international standards such as API 594 .

As a trusted valve manufacturer in China, we offer high-quality double plate flange check valves backed by stringent quality control and factory testing. Custom coatings, materials, and pressure ratings are available to match your specific project requirements.

Choose our Double Plate Flange Check Valve for a compact, low-maintenance, and high-performance solution to backflow prevention.

Specifications:

Nominal pressue (MPa) 1.0 1.6
Nominal diameter(mm) 50-1000 50-1000
Test pressure Shell 1.5 2.4
(MPa) Seal 1.1 1.76
Applicable temperature 150
Applicable medium Fresh water, Sewage, Sea water, Air, Vapor, Food, Medicine, Oils, Acids,
Alkalis, etc.
Operating mode manual, worm gear, pneumatic, electric, etc.

Flange Double Plate Check valve Drawing

Standards:

Design & Manufacture Flange Connection Face to Face Dimension Test & Inspection
API 594 DIN PN10/16/25 API594 API 598

Material:

body Cast Iron, Ductile Iron, Carbon Steel, Stainless Steel
Plate Ductile Iron, Carbon Steel, Stainless Steel
Spring Stainless Steel
Hinge Pin Stainless Steel
Plug carbon steel
Body Bearing PTFE
Spring Bearing PTFE
Stop Pin Stainless Steel
Eye Bolt Carbon Steel
Body Seat NBR, EPDM, Viton, Neoprene

STANDARD MATERIALS OF MAIN PARTS

ITEM PART NAME MATERIAL
1 STOP PIN Ss304
2 HINGLE PIN Ss304
3 SPRING Ss304
4 PLATE DI
5 BODY CI
6 SEAT EPDM
7 BEARING PTFE

DIMENSIONS: (mm)

Flange Double plate check valve

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Double plate Flange Check Valve

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