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Preventing hazardous backflow in high-pressure, high-temperature fluid lines requires heavy-duty internal construction. Flowbiz Exports Pvt. Ltd. manufactures precision-engineered Piston Check Valves (also known as Lift Check Valves), built to deliver tight, non-return shut-off in extreme operating environments across power plants, oil refineries, and chemical processing facilities.
A piston check valve features a guided piston disc inside the valve body that moves vertically along a central axis. When forward fluid pressure exceeds the cracking threshold, it lifts the piston off the body seat to permit smooth flow. As line pressure drops or flow reverses, gravity combined with backpressure (and an optional heavy-duty spring) forces the piston down onto the seat, instantly sealing the line and preventing backflow.
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Parameter |
Specification Details |
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Brand / Manufacturer |
Flowbiz Exports Pvt. Ltd. |
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Valve Type |
Piston Type Lift Check Valve |
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Body Material |
Forged Steel (A105 / F304 / F316) / Cast Steel (WCB) / Alloy Steel (F11 / F22) |
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Piston / Trim Material |
Stainless Steel (SS304 / SS316) / Stellite Hardfaced |
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Size Range |
1/2 inch to 4 inch (15 mm to 100 mm ) |
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Pressure Rating |
Class 150 / 300 / 600 / 800 / 1500 / 2500 / PN40 to PN400 |
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End Connections |
Threaded (NPT / BSP) / Socket Weld (SW) / Flanged End / Butt Weld |
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Design Standard |
BS 5352 / API 602 / ASME B16.34 |
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Testing Standard |
API 598 / ISO 5208 |
Flowbiz Exports guarantees rapid delivery and local support through an extensive distribution network across major industrial hubs:
Flowbiz Exports Pvt. Ltd. produces high-integrity valves built to strict global safety codes. Every piston check valve undergoes rigorous hydrostatic body testing, low-pressure seat leakage checks, and dimensional verification. Contact Flowbiz Exports today to request a quotation or consult with our technical team for custom valve configurations.