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SAIGAO check valves are precision-engineered automatic valves designed to protect your piping systems by preventing medium backflow. By leveraging the gravitational force of the circular flap and the pressure of the medium, our valves provide a reliable, self-actuating seal. Whether you require a Lift Check Valve for high-pressure stability or a Swing Check Valve for unobstructed flow, SAIGAO products are manufactured to the highest industry standards to ensure operational integrity.
Our engineering team has optimized the traditional check valve design to overcome common industry challenges. While conventional valves may struggle with flow resistance, SAIGAO’s streamlined internal casting minimizes pressure drop and enhances flow efficiency. Our lift-type models feature a precision-guided flap for rapid response, while our swing-type models utilize a robust shaft design for smooth rotation and a tighter seal. Ideal for use as bottom valves in pumping devices or in combination with shut-off valves for critical safety isolation, our products provide the durability required for demanding industrial environments. When reliability and precision are non-negotiable, industry leaders trust SAIGAO as their preferred China valve manufacturer.
The check valve can also be used to supply a line in which the pressure may rise to an auxiliary system that exceeds the system pressure. The check valve can be mainly divided into a swing type check valve (rotation according to the center of gravity) and a lift check valve (moving along the axis).
Check Valves The role of this type of valve is to allow only the medium to flow in one direction and to prevent flow in the opposite direction. Usually, the valve is automatically operated, and the valve flap is opened by the fluid pressure flowing in one direction; when the fluid flows in the opposite direction, the fluid pressure and the self-reclosing valve flap of the valve disc act on the valve seat to cut off the flow.
Among them, the check valve belongs to this type of valve, which includes a swing check valve and a lift check valve. The swing check valve has a hinge mechanism and a door-like flap that rests freely against the inclined seat surface. In order to ensure that the valve flap can reach the proper position of the valve seat surface each time, the valve flap is designed in the hinge mechanism, so that the valve flap has enough swinging space and the valve flap is truly and comprehensively in contact with the valve seat. The flaps can all be made of metal, or they can be inlaid with leather, rubber, or synthetic coverings depending on the performance requirements. With the swing-open check valve fully open, the fluid pressure is almost unimpeded, so the pressure drop across the valve is relatively small. The valve flap of the lift check valve is located on the valve seat sealing surface of the valve body. In addition to the flap being free to lift and lower, the valve is like a shut-off valve. The fluid pressure causes the flap to lift from the seat sealing surface. The backflow of the medium causes the flap to fall back onto the seat and shut off the flow. Depending on the conditions of use, the flap can be of all metal construction or it can be in the form of a rubber or rubber ring on the valve disc holder. Like the shut-off valve, the passage of fluid through the lift check valve is also narrow, so the pressure drop through the lift check valve is larger than that of the swing check valve, and the flow rate of the swing check valve is limited. Very few.
0531-69959201
lqg18653457231
+86-18653457231
No 12111,Jingshi Road, Lixia District, Jinan City, Shandong Province. P.R. China
