This time I will introduce you to the basic information about the working principle and characteristics of Check Valve.
The Check Valve is the next generation of high-performance Check Valve. It is suitable for long-distance pipelines and general industrial pipelines. Its strength, safety, and resistance to harsh environments are designed with special considerations. It is suitable for various corrosive and non-corrosive materials. medium. Compared with the floating Check Valve, during operation, the fluid pressure in front of the valve is generated by the force of the ball and is completely transmitted to the bearing without moving the ball to the valve disc. Therefore, the valve disc cannot withstand excessive pressure. Therefore, the fixed Check Valve Small torque, small valve disc deformation, stable sealing performance, long service life, suitable for high pressure and large diameter. The advanced separation pre-barrel assembly is self-connecting and provides upstream sealing. Each valve has two valve seats, which are sealed in all directions. There is no flow restriction during installation and it is bidirectional. This
Universal Valve is generally installed horizontally.
The Check Valve has two valve body structures, two types and three types. The French Check Valve is connected with bolts, and the seal is made of reinforced polytetrafluoroethylene embedded in a stainless steel ring. There is a spring at the rear of the steel wheel to ensure that the valve plate is close to the ball and remains seal. There are PTFE bearings on the upper and lower valve stems to reduce friction and save effort in operation. There is an adjustment piece at the bottom of the small shaft to ensure the connection position between the ball and the sealing ring.
1. Fire safety structure: The valve has fire safety function, and its design and manufacturing comply with API607 and API6FA specifications.
2. Double blocking and discharge function: The Check Valve uses a spring to press the floating valve piece. No matter the valve is in a fully open or fully closed state, the valve pieces on the upper and lower flow sides can block the fluid retained in the valve body from being discharged through the discharge valve.
3. Automatic pressure leakage function: When the temperature of the trapped medium in the valve cavity rises, causing abnormal pressure rise, there is no need to pass through the safety valve, and the valve plate function can automatically leak pressure. This is very important to ensure the safety of the Universal Valve transporting liquid media.
The working principle of the Check Valve: it can be tightly closed by the pneumatic actuator with a 90-degree rotation of the air source and small torque. The completely equal valve body cavity provides a low-resistance, straight-through flow path for the medium. It is generally believed that Check Valve are very suitable for direct opening and closing, but in recent developments, Check Valve are designed for throttling and flow control. The main features of the Check Valve are its compact structure and easy operation and maintenance.
