H44H, H44Y PN16~PN250 Shanghai Yang Valve Co. Ltd. production pipeline, various conditions 150LB-2500LB swing steel check valves for pressure 1.6~25MPa/2.0-42.0MPa temperature -29~+550 oil, chemical, pharmaceutical, chemical, electric power industry and so on, it is used to water, oil, steam, acid etc.. It is the valve that controls the one-way flow of the medium in the pipeline, and prevents the backflow of the medium in the pipeline. The check valve belongs to the automatic valve, and the open and close parts are opened or closed by the power of the flowing medium. The check valve is only used for one-way flow of media, and prevents backflow of media to prevent accidents. It is mainly used in petroleum, chemical, pharmaceutical, chemical fertilizer, power and other pipelines.

Swing check valve adopts internal rocker swing type structure, all the valve opening and closing parts are installed in the valve body, not through the valve body, in addition to the middle flange parts with sealing gasket or seal ring seal, the overall no leakage point, put an end to the possibility of valve leakage.

The connecting structure of the rocker valve and the valve clack of the swing type check valve adopts a spherical connection structure, so that the valve flap has a certain degree of freedom in the range of 360 degrees centigrade, and has a proper micro position compensation.

Swing check valve seal sealing surface (13Cr) stack welding steel or hard alloy Stellite6, which is not used in fine particulate medium due to erosion and wear quickly and