Swing check valve

for waterfor oilfor the chemical industry

The swing check valve, also known as a one-way valve or a check valve, is used to prevent the backflow of the medium in the pipeline. The valve that opens or closes by itself by the flow and force of the medium to prevent the backflow of the medium is cal The swing check valve is suitable for various pipelines with nominal pressure PN1.0MPa~42.0MPa, Class150-2500; nominal diameter DN15~1200mm, NPS1/2~48; working temperature -196~540℃. Medium backflow. By choosing different materials (WCB, CF8(M), CF3(M), 1Gr5Mo, 15CrMo1V, it can be applied to various media such as water, steam, oil, nitric acid, acetic acid, strong oxidizing medium and urea. Mainly used for Petroleum, chemical, pharmaceutical, fertilizer, electricity and other pipelines. structure The swing check valve adopts a built-in rocker arm swing structure. All the opening and closing parts of the valve are installed inside the valve body and do not penetrate the valve body. Except for the sealing gasket and sealing ring used in the middle flange, the overall There is no leakage point, eliminating the possibility of valve leakage. The connection between the rocker arm and the disc of the swing check valve adopts a spherical connection structure, so that the disc has a certain degree of freedom in the range of 360 degrees, and has appropriate micro-position compensation. It is suitable for clean medium, not suitable for medium containing solid particles and high viscosity. Structure length: GB12221 Connection flange: JB/T79-1994 Test and inspection: JB/T9092-1999