Structure and Working Principle
The lift check valve typically consists of:
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Valve body and bonnet – providing the main pressure boundary.
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Disc (or piston) – which moves up and down in response to flow pressure.
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Seat – offering a sealing surface to stop backflow.
Working principle:
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Forward flow → Fluid pressure lifts the disc vertically, opening the passage.
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Reverse flow or low pressure → The disc automatically falls onto the seat due to gravity and back pressure, achieving a sealing effect.
Key Features
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Reliable sealing performance – especially effective in high-pressure and high-temperature applications.
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Automatic operation – no external actuator or manual control is required.
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Durable construction – designed to withstand continuous operation in harsh industrial environments.
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Versatile installation – commonly installed in horizontal or vertical pipelines (with upward flow).
Applications
Lift check valves are widely used in:
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Power plants – steam pipelines and boiler systems.
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Petroleum and chemical industries – to ensure unidirectional flow of oil, gas, and chemical fluids.
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Water supply systems – to prevent backflow contamination.
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General industrial pipelines – for secure and reliable flow control.
Conclusion
The Lift Check Valve is a dependable and efficient solution for preventing reverse flow in critical pipeline systems. With its simple design, automatic function, and ability to handle high pressures, it is a widely trusted valve across industries such as power generation, oil and gas, and water treatment.