There are several types of one-way valves

Time：2026-06-22

Author： Chongqing Xinhaoyu Auto Parts Co., Ltd.

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Spring one-way valve. The working principle of a spring-loaded pressure valve is to use the downward pressure of a spring to open the valve and block the backflow of liquid in the pipeline.

Gravity check valve. The working principle of a gravity check valve is to regulate pipeline pressure based on the valve's own weight. When the pressure is high, the valve automatically drops and closes. When the pressure is low, the valve automatically retracts.

Swing pressure valve. Rotary pressure valve opens the valve by the flow of liquid in the pipeline.

When the pressure of the liquid is greater than the pressure set by the pressure valve, it will be pushed open and closed by the flowing liquid. When the pressure decreases, the valve will automatically fall back to its original position.

Diaphragm pressure valve. Diaphragm pressure valves are generally made of plastic. The working principle is the same as that of a water wheel, which can eliminate reverse pressure to open and close the pipeline for liquid reflux during liquid flow.

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There are several types of one-way valves

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