Dual Plate Check Valves 1/2"-12"150LB~2500LB(ASME B16.34)Working temperature: -20℃+120℃
Dual Plate Check Valves 1/2"-12"150LB~2500LB(ASME B16.34)Working temperature: -20℃+120℃
Dual Plate Check Valve
Size: 1/2"-12" (DN15 -DN300)Class: 150#-2500#
Design: API594 (ASME B16.34)
Connection: Wafer or flange PN6 to PN100 ACC. Complies with EN1092-1 / PN6 to PN40 ISO7005-1 / BS 4504 Section 3.2 ANSI 125# to 600# ACC. Complies with ASME B16.1/ B16.5
Body material：Carbon steel, Stainless steel, Alloy steel, Duplex stainless steel
End connection：RF, LUG, RTJ, WAFER, WJ
Maximum working pressure: Depends on material structure
Working temperature: -20℃+120℃ (other temperatures available on request)
Design: API594 (ASME B16.34)
Connection: Wafer or flange PN6 to PN100 ACC. Complies with EN1092-1 / PN6 to PN40 ISO7005-1 / BS 4504 Section 3.2 ANSI 125# to 600# ACC. Complies with ASME B16.1/ B16.5
Body material：Carbon steel, Stainless steel, Alloy steel, Duplex stainless steel
End connection：RF, LUG, RTJ, WAFER, WJ
Maximum working pressure: Depends on material structure
Working temperature: -20℃+120℃ (other temperatures available on request)
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Double Check Valve Manufacturer
How does S J Double Plate Check Valve Work?
When fluid pressure flows in one direction, the valve plate opens. If the fluid moves in the opposite direction, the flow will be cut off due to the fluid pressure and the effect of the plate on the valve seat. Reducing the flow will cause the plate to close by torsion spring action without any reverse flow. The double plate check valve has a cylindrical body, which can have a more uniform stress distribution compared to other valve designs. The cylindrical body is designed to withstand extreme weights that are equal to the weight or thickness of the valve. Therefore, this valve has a clear advantage in safety and economy under severe load conditions
How to install S J double plate check valve?
1: Valve cleaning service
The valve ends are protected with anti-rust oil. Clean the valve before installation and check that the valve plate is free of rust and oil.
The valve ends are protected with anti-rust oil. Clean the valve before installation and check that the valve plate is free of rust and oil.
2: Determine the direction of flow
The flow direction in the pipeline should be consistent with the flow direction indicated by the arrow mark on the valve body.
The flow direction in the pipeline should be consistent with the flow direction indicated by the arrow mark on the valve body.
3: Insert the valve into the horizontal pipeline
Insert the valve into the pipeline with the pin holder in the upper and lower positions.
Insert the valve into the pipeline with the pin holder in the upper and lower positions.
4: Measure the distance between the double plate check valve and the flange
When both flanges are connected to the check valve body, ensure that there is enough distance
When both flanges are connected to the check valve body, ensure that there is enough distance
SJ high-performance dual plate check valve features a compact, space-saving design, making the dual plate wafer check valve an ideal choice for installation between flanges in tight piping systems. Engineered with a spring-loaded split disc, these dual plate check valves open easily under low pressure and close rapidly to prevent backflow and eliminate water hammer. For systems requiring robust backflow prevention, this reliable double check valve configuration ensures exceptional sealing performance and long-term durability across versatile industrial applications.
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