Product Overview
Check valve is also called reverse flow valve, non-return valve, back pressure valve, one-way valve. The opening and closing parts are opened or closed by the flow and force of the medium to prevent the medium from flowing back. The check valve belongs to the automatic valve category, which is mainly used in pipelines where the medium flows in one direction, and only allows the medium to flow in one direction to prevent accidents.
Performance characteristics
The swing check valve adopts an internal rocker 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 at the middle flange, there is no external leakage point as a whole, eliminating the possibility of valve leakage.
The swing check valve rocker arm and valve disc connection adopts a spherical connection structure, which allows the valve disc to have a certain degree of freedom within 360 degrees and has appropriate micro-position compensation
Application field
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℃, used to prevent medium backflow. By selecting 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. It is mainly used in pipelines such as petroleum, chemical, pharmaceutical, fertilizer, and electricity.
Technical parameters
Main appearance and connection size mm
