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Oil Service Wafer Double Disc Check Valve

Oil Service Wafer Double Disc 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

Oil Service Wafer Double Disc Check Valve


Double Disc Check Valves, also called wafer check valves are designed to be installed between ANSI 150, 300, 600,900 or 1500LB flanges. These valves should not beinstalled between flanges that contain defects.

Prior to installation, the wafer ends and mating flanges should be inspected to ensure gasket surfaces are free of defects. The piping system must also be checked for proper alignment.

Double Disc Check Valves should never be utilized to realign an existing piping system. Our Dual Plate Check Valves are designed for steady flow conditions and can be installed in either horizontal orvertical (flow upwards) pipelines.


Nominal diameter:

1.5" ~ 60" 

(DN40 ~ DN1500)

Pressure  range:

Class150 ~ Class 900 

(PN16 ~ PN150)

Working   temperature: 

-196℃ ~ +560℃

Body material:

Carbon steel, Stainless steel, Alloy steel, Bronze

Suitable medium:

Water, Steam, Oil  products, Nitric acid, Acetic acid

End Connection: 



Light weight

Compact design

Easy installation

Non-slam principle of operation

Suitable for horizontal and vertical up flow

Good flow characteristic and less pressure drop

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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