The following is a brief introduction to what is a pneumatic ball valve
, as well as some basic knowledge of its use and working principle. Pneumatic ball valve is a ball valve equipped with a pneumatic actuator. The execution speed of the pneumatic actuator is relatively fast, and the fastest switching speed is 0.05 seconds/time, so it is usually called a pneumatic quick cut-off ball valve. Pneumatic ball valves are usually equipped with various accessories, such as solenoid valves, air source treatment triples, limit switches, positioners, control boxes, etc., to achieve local control and long-distance centralized control, and the valve can be controlled in the control room. , do not need to go to the scene or bring manual control at high altitude and dangerous, which saves human resources as well as time and safety to a great extent. The working principle of the pneumatic ball valve: the valve is unblocked or blocked by rotating the valve core. The pneumatic ball valve switch is light, small in size, can be made into a large diameter, reliable sealing, simple structure, convenient maintenance, sealing surface and spherical surface are often closed, and are not easily eroded by the medium. Pneumatic ball valve and plug valve are the same type of valve, only its closing part is a sphere, and the sphere rotates around the center line of the valve body to achieve opening and closing. Description of the pneumatic ball valve: 1. The ball valve has obvious switch position indication: the valve body, the ball and the handle are an assembly unit. The handle points to the pipeline direction, the valve is open, and the handle is vertical to the pipeline direction. The valve is closed; off instruction. 2. Locking device design: In order to prevent the wrong operation of the switch, a flat head valve stem is used to set a locking hole at the switch position to ensure that the valve is in the correct position. 3. Blowout-proof guided valve stem. The valve stem is inverted from the valve body or has a blow-proof structure, and is sealed by a sealing ring. Even if a fire occurs and the packing is burned, the protruding part of the valve stem can be in close contact with the sealing surface on the valve body, which can effectively prevent external leakage and The valve stem flies out, reducing accident losses. 4. Anti-static design: The springs and small balls of chromium-nickel stainless steel are used to make the ball, the valve stem and the valve body conduct electricity to each other, so as to completely release the static electricity generated by the friction between the non-metallic valve seat and the ball. The advantages of pneumatic ball valve: small fluid resistance, simple structure, tight and reliable, convenient operation, quick opening and closing, convenient maintenance and wide application range.
Currently there is a global trend growing. People are more conscious about types of industrial valves and are seeking alternatives to traditional solutions.
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