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    Dual Plate Wafer Check Valve.jpg
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    Dual Plate Wafer Type Check Valve - China Suppliers and Factory for HVAC, Water Supply, and Chemical Processing

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    Type: Wafer Valve

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    Face to Face Standards: API609, BS5155, DIN3202, 1S05752

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    Flange Standards: DIN, BS, UNI.ISO, ANSI, AS, JIS

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    Mounting Flange Standard: 1S05211

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    Working Pressure: PN16 (200 PSI)

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    Application Areas: Our wafer valves are extensively used in various industries such as HVAC, Water Supply & Sewage, Food & Beverage, Chemical and Petrochemical Processing, Power and Utilities, Paper and Pulp, and Shipbuilding.

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    Manufacturer Information: As a trusted China supplier and factory, we ensure that our products meet rigorous quality standards, providing reliable solutions for your operational needs.

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      Product Details

      Description

      Dual Plate Wafer Check Valve is a compact and efficient solution for preventing backflow in water, gas, oil, and other fluid systems. Designed with two spring-loaded plates, this valve offers quick response and minimal pressure loss, making it ideal for space-constrained pipelines.

      The dual plate wafer check valve operates automatically when fluid flows in the forward direction, with the plates opening under pressure. When flow stops or reverses, the springs quickly push the plates closed, providing a tight seal that protects pumps, compressors, and upstream equipment.

      Manufactured from cast iron, stainless steel, or carbon steel, this valve is corrosion-resistant and built for long service life. The wafer-style body allows for installation between standard flanges, making it easy to integrate into existing systems without major modifications.

      Thanks to its lightweight and low-profile design, the dual plate wafer check valve is often used in HVAC, water treatment, petrochemical, and marine applications. It meets international standards such as API 594 and EN 12334 and is pressure-tested before delivery.

      Whether you're designing a new system or replacing older, bulky swing check valves, the dual plate wafer check valve offers superior performance in a compact form factor.

      • Backflow Prevention
      • Spring-Loaded Dual Plates
      • Low Pressure Drop
      • Wafer-Style Body
      • API 594 Compliant
      • Corrosion Resistant

      Specifications

      Nominal Pressure (MPa) 1.0 1.6
      Nominal Diameter (mm) 50–800 50–800
      Test Pressure (MPa) Shell 1.5 2.4
      Seal 1.1 1.76
      Applicable Temperature (°C) 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
      API 594
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      Flange Connection
      DIN PN10/16/25
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      Face to Face Dimension
      API 594
      🔬
      Test & Inspection
      API 598

      Material

      Component 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

      Dimensions (mm)

      SIZE (in) DN B E DIN PN10/16 ANSI 150 JIS 10K
      2 50 43 66 107 102 101
      2-1/2 65 46 86 127 121 121
      3 80 64 95 142 133 131
      4 100 64 118 162 171 156
      5 125 70 146 192 193 187
      6 150 76 174 218 219 217
      8 200 89 225 273 276 267
      10 250 114 266 328 336 330
      12 300 114 311 378/382 406 375
      14 350 127 361 438/442 448 420
      16 400 140 411 488/495 511 483
      18 450 152 451 538/555 546 538
      20 500 152 506 592/617 603 593
      24 600 178 625 695/734 714 697
      28 700 229 721 809 828 807
      32 800 241 826 916 936 917
      Dual Plate Check Valve (2)

      More Details

      Dual Plate Check Valve (3)
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      Frequently Asked Questions

      What is a dual plate wafer check valve used for?
      A dual plate wafer check valve is used to prevent backflow in piping systems carrying water, gas, oil, steam, and other fluids. It automatically opens when forward flow pressure is applied and closes quickly when flow stops or reverses, protecting pumps, compressors, and other upstream equipment from damage.
      What materials are available for the dual plate wafer check valve body?
      The valve body is available in Cast Iron, Ductile Iron, Carbon Steel, and Stainless Steel. Seating materials include NBR, EPDM, Viton, and Neoprene, allowing the valve to be customized for different media and operating conditions including corrosive or high-temperature environments.
      What standards does the dual plate wafer check valve comply with?
      The dual plate wafer check valve is designed and manufactured in accordance with API 594. Flange connections conform to DIN PN10/16/25, face-to-face dimensions follow API 594, and testing and inspection are carried out per API 598. The valve also meets EN 12334 requirements.
      What size range is available for the dual plate wafer check valve?
      The dual plate wafer check valve is available in nominal diameters from DN50 (2 inches) to DN800 (32 inches), covering a wide range of pipeline sizes. Both PN10 and PN16 pressure classes are available across the full size range.
      How is the dual plate wafer check valve installed?
      The wafer-style body is designed to be clamped between two standard pipe flanges using bolts, without the need for additional flanges on the valve itself. This makes installation straightforward and space-efficient, and allows easy integration into existing systems with minimal modifications.
      What are the advantages of a dual plate wafer check valve over a swing check valve?
      Compared to traditional swing check valves, the dual plate wafer check valve offers a significantly more compact and lightweight design, lower pressure drop, faster closing response to prevent water hammer, and easier installation between flanges. It is well-suited for space-constrained applications in HVAC, water treatment, petrochemical, and marine industries.

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