Silent Check Valve Size Range: DN50-DN450 The spring automatically closes the disc at zero flow
Silent Check Valve Size Range: DN50-DN450 The spring automatically closes the disc at zero flow
Silent Check Valve
Size Range: DN50-DN450
Threaded Style available in sizes 1/2"-2"
Wafer Style available in sizes 2"-10"
Globe Style available in sizes 2 1/2 ”- 42”
BODY MATERIAL:Cast iron, ductile iron, carbon steel, 316 stainless steel
Threaded Style available in sizes 1/2"-2"
Wafer Style available in sizes 2"-10"
Globe Style available in sizes 2 1/2 ”- 42”
BODY MATERIAL:Cast iron, ductile iron, carbon steel, 316 stainless steel
Quantity
SJ Silent Check Valve Design Features & Benefits
SJ Silent Check Valves are commonly used in vertical turbine pumping installations when pumping water from wells to elevated reservoirs. They are also recommended for commercial and industrial HVAC applications such as heating systems and condensate return lines. When specified, SJ Silent Check Valves are factory common system approved for use in hazardous fire equipment and fire protection systems.
The short face-to-face dimensions of the SJ Silent Check Valves provide a compact solution for machine room piping layouts. The SJ Silent Check Valves are capable of silent operation when installed in vertical flow direction up or down or in the horizontal position. Valves are available with either metal seats or an optional resilient seat made from acrylonitrile butadiene (NBR), ethylene propylene diene (EPDM), or fluororubber (FKM).
The short face-to-face dimensions of the SJ Silent Check Valves provide a compact solution for machine room piping layouts. The SJ Silent Check Valves are capable of silent operation when installed in vertical flow direction up or down or in the horizontal position. Valves are available with either metal seats or an optional resilient seat made from acrylonitrile butadiene (NBR), ethylene propylene diene (EPDM), or fluororubber (FKM).
Conclusion:
SJ Silent Check Valves are used in a variety of liquid, air, and gas applications to prevent flow reversal and associated water hammer, vibration, and surges. They are available in a range of configurations and sizes, including compact dimensions for limited spaces -- as well as multiple pressure classes and material construction.To control water hammer and reverse flow, the use of silent check valves is recommended. When the source moving the fluid shuts down and the forward flow of the fluid decreases, the specially designed stainless steel spring action of the silent check valve controls the valve disc closure to occur prior to flow reversal. This spring assist insures that the valve does not slam shut, and the occurrence of water hammer is eliminated.
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