Flange Connecting Double Disc Type Class300 NRV Check Valve

Brand Name:coosai
Certification:API6D, ISO 9001
Model Number:H76Y
Minimum Order Quantity:1SET
Payment Terms:L/C, T/T
Place of Origin:CHINA
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Location: Wenzhou Zhejiang China
Address: Dongou Industrial Zone, Oubei Town,Wenzhou,Zhejiang,China
Supplier`s last login times: within 26 hours
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Product Details

Flange Connecting Double Disc Type Swing Check Valves


Check valve is usually installed in linesystem, prevent medium from flowing back. Check valve is an automatic valve that itis open and close by pressure of fluid.

Against the problem of traditional check valve, we accord AMERICA API&GERMNEY DIN, after study and research for many years, developed H76 lug body type wafer, double-disc swing type wafer check valve, H74 swing single-plate wafer check valve, H71 lift wafer check valve, and series of those products. Used in the industry of oil, petro, metallurgy, electric, light industry, food, received high appraisal from customers.


Applicable Standards

  • Design Standard: API 6D, API 594, BS1868, API602
  • Nominal Dimension: Casting Valve: 2”-48”, Forging Valve: 1/4"~2"
  • Nominal Pressure: Class 150-2500
  • Connection type: WAFER, LUG, FLANGE, ETC.
  • Structure: Bolted Bonnet, Welded bonnet, Pressure seal, Double disc, Tilting disc,”Y” pattern,Non Slam design.
  • Material:DI, CS, SS, DSS,LTCS, Inconel ,Monel, Bronze,Aluminum Bronze
  • Operation: Damper and counterweight(optional)
Design StandardGB/T12221API6DAPI594
Pressure-Temperature RatingGB/T12224ASME B16.34
Face to FaceFactory standardAPI6DAPI594
Flange EndsGB/T9113JB/T79ASME B16.5, ASME B16. 47
Inspection & TestJB/T9092/GB/T13927API598/API6D
Test Pressure(MPA)Shell TestCL150CL300CL400CL600CL900CL1500

High Pressure

Seal Test

2.937.5810.015.022.437.5

Low Pressure

Seal Test

2.075.527.3111.0316.5427.5



China Flange Connecting Double Disc Type Class300 NRV Check Valve supplier

Flange Connecting Double Disc Type Class300 NRV Check Valve

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