Wafer Retainerless Tilting Disc Swing Check Valve (H77)

• Material: Cast Steel
• Connection Form: Wafer
• Structure: Swing
• Pressure: Ordinary Pressure
• Function: Ddcv Double Lobe, Nrvr Silence, Sfcv Rubber Lobe, Nrvz Silence, Nrvg Silence
• Sealing Form: Gland Packings Globe Valve
• Model NO.: H77
• Flow Direction: Unidirection
• Standard: ANSI
• Application: Industrial Usage, Water Industrial Usage
• Size: 2" to 24"
• Class: 150lb to 900lb
• Certificates: API 6D, CE, ISO9001
• Application Fields: Metallurgy,Light Industrial,Electric Power,Petroch
• Delivery Detail: 20~45 Days According to The Specific Quantities
• Transport Package: Standard Export Wooden Case
• Specification: API598,API6d, ANSI, Bs, DIN, JIS
• Trademark: NAIBANG
• Origin: China
• HS Code: 8481300000
• Production Capacity: 5000PCS/Year

Product Description

Wafer Retainerless Tilting Disc Swing Check Valve (H77)



1) Size: 3" - 40"
2) Class: 150lbs - 900lbs

Technical standards:
1) Design and manufacture: API 6D
2) Face-to-face: ANSI B16.10
3) Flange end: ANSI B16.5
4) Inspection and test: API 598

Main materials:
1) Body: CS/SS - WCB, WCA, WCC, A351, A744, 304, 304L, 316, 316L
2) Disc: Stainless steel - A351, 420S, S42000, 304, 304L, 316, 316L
3) Stem and sealing surface: A351, A744, 304, 304L, 316, 316L

Wafer check valve is applicable for various pipelines with nominal pressure of PN1.0 Mpa~42.0Mpa,Class 150LB~2500LB and nominal diameter of DN15~1200mm,NPS 1/2-48 and working temperature of -196~540 degree Celsius to be used for protecting from medium backflowing.The different materials selection can apply to the medium involving water,steam,oils,nitric acid,acetid,strong oxidizing medium and urea etc.


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Design and manufacture	API594,API 6D,JB/TB8937
Face to face and end to end	API594,API6D,DIN3202,JB/T8937;
Pressure-temperature rating	ASME B16.34,DIN2410,GB/T9124,HG20625,SH3406,JB/T74
Inspection and test	API598,JB/T9092;
Pipe flange	JB/T74~90,JB/T9112-9124,HG20592~20635,SH3406,ASME B16.5,DIN2543~2548,GB/T13402,API605,ASME B16.47.