About:

Swing check valve, also known as check valve or check valve, its role is to prevent the backflow of media in the pipeline. The opening and closing parts are automatically opened or closed by the flow and force of the medium to prevent the backflow of the medium. The check valve belongs to the automatic valve class, which is mainly used on the pipeline with one-way flow of the medium, and only allows the medium to flow in one direction to prevent accidents. This type of valve should generally be installed horizontally in the pipeline.

Purpose:

Swing check valve is suitable for nominal pressure PN1.0MPa~42.0MPa, Class150-2500; Nominal diameter DN15~1200mm, NPS1/2~48; The operating temperature of -196~540℃ of various pipes, used to prevent the backflow of the medium. Through the selection of different materials (WCB,CF8(M),CF3(M),1Gr5Mo,15CrMo1V, can be applied to water, steam, oil, nitric acid, acetic acid, strong oxidizing medium and urea and other media. Mainly used in petroleum, chemical, pharmaceutical, chemical fertilizer, electric power and other pipelines.

Structure:

Swing check valve adopts internal rocker arm swing structure, all the opening and closing parts of the valve are installed inside the valve body, do not penetrate the valve body, in addition to the sealing gasket and sealing ring used in the flange part, the whole has no external leakage point, to eliminate the possibility of valve leakage. Swing check valve rocker arm and valve disc are connected by a spherical structure, so that the valve disc has a certain degree of freedom in the 360 degree range, with appropriate micro position compensation. Swing check valves are suitable for clean media and should not be used for media containing solid particles and large viscosity.