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Dual plate Flanged Check Valve

Dual plate Flanged 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.

    Description

    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.

    Specifications

    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)

    DIMENSIONS
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    Company Profile 1(1)(1)

    Tianjin Guoji Valve Co., Ltd. is an export-oriented valve manufacturer with 15,332 square meter factory area, which has strong capability of R&D, Manufacture, Trading and Service. Now our company has passed the Lloyd's Register (LR) ISO9001: 2015 quality management system certification (ISO Approval number: ISO 9001 – 00033059) and CE/PED certification (EU Certificate Of Conformity). (Certificate No: 0343/PED/SHA/BJG00001668/A).
    TGV's products covered Butterfly valves, Check valves, Strainers, Gate valves, Ball valves, Globe valves, Expansion joints, Flanges and Fittings with pressure range from 0.5 to 6.4 MPa, size from DN15 to DN3000. The products also have been widely exported to more than 30 countries and regions.
    We aim at deliver only quality valves with professional services, we see quality and service as life and always take our reputation and promises seriously.

    Company Profile 2(1)(2)
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