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Oil Service Wafer Double Plate Check Valve

Oil Service Wafer Double Plate Check Valve

Structural Feature Short structural length,only 1/4~1/8 of that of traditional flanged check valve; Low volume,light weight,only 1/4~1/20 of those of traditional flanged check valve; Quick valve disc closedown,low water hammer pressure; Applicable for and easily installed for vertical or...
Product Details


Check Valve is applicable for various pipelines with nominal pressure of PN1.0MPa-42.0 MPa,Class150-2500 and nominal diameter of DN15-1200mm,NPS1/2-48 and working temperature of -196-540 to be used for protecting from medium back flowing. The different materials selection can apply to the medium involving water, steam, oils, nitric acid, strong oxidizing medium and urea etc.

Corrosion protection
Inside and outside epoxy coating
Applicable temperature: -196-540 different raw material for different work temperature
Applicable medium: Water, oil, gas and other causticity medium (different raw material for different medium)
About this product:H46H/H46W/H46X-10-40C/P/R.

WCB CF8 CF3 GR4A Hastelloy C etc.

Product Features

1. Resilient Buna-N or EPDM Seat

2. Upper and lower PTFE thrust washers

3. Wafer body style fit between FF or RF flanges

4. Torsion springs assist valve closure, preventing flow reversal

5. Thrust washer reduce friction and wear of valve plate hinges

6. Dual plate valves give maximum strength with minimum opening time

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

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