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Wafer Double Plate Check Valve

Wafer Double Plate Check Valve

Two arch disc are fixed onto the valve body with a spindle on which two torsional springs are equipped for installing the butterfly plate onto the valve body sealing face. The butterfly plate pressed by the springs is opened by relying on the medium pressure, and the valve is closed by the spring force and the medium pressure under backflow. It can be installed on horizontal and vertical pipelines.
Product Details


Main feature:                                                                                                                                           

The valve body passageway is designed in a wing-shaped streamline type, allowing the medium to flow through the passageway rapidly and steadily with no noise. It is opened or closed by the valve clack moving to-and-fro through the valve body guiding axle under the spring effect. It can be installed on horizontal and vertical pipelines.

Product Range

Nominal diameter: 1/2" ~72" 

Pressure range: Class 150 ~ 2500 (PN16 ~ PN420)

Working temperature: -196℃ ~ +560℃

Medium: Fresh water, sea water, waste water, food stuff, steam, all kinds of oil, all kinds of acid and alkaline liquid etc

Applications: Water, industrial systems


1. Small compact, easy in maintenance
2. Quick-close action
3. Easy instalation, it can be installed on horizontal and vertical both directions pipes
4. The valve is tightly sealed, no leakage
5. Safe and reliable in operation, high interference-resistance

Applicable Standards 

Inspection and test: API598, JB/T9092;

Design and manufacture: API594, API 6D, JB/TB8937;

Face to face: API594, API6D, DIN3202, JB/T8937;

Pressure-temperature rating: ASME B16.34, DIN2410, GB/T9124, HG20625, SH3406, JB/T74;

Flange: JB/T74-90,JB/T9112-9124, HG20592-20635, SH3406, ASME B16.5, DIN2543-2548, GB/T13402, API605.


Material Standard:
ASTM A182 F316,F304,F316L,F304L,F321,F51,F53,F55,F6a,F11,F22.


ASTM A352 LCC/LCB ,ASTM A350 LF2,ASTM 217 CA15, WC6,WC9 ,C5,C12.


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With our years of technical knowledge and experience, we assure you,
Naibang will be one of your best parters in China.

If you are looking for good  qulity items ,you can contact us. 

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