Rongzheng
2021-11-29 17:17:04

The main characteristics and application fields of pneumatic high-pressure ball valves

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Pneumatic high-pressure ball valve It has the action of rotating 90 degrees, and the body is a ball with a circular through hole or channel through its axis. Ball valves are mainly used in pipelines to cut off, distribute and change the flow direction of the medium, and can be closed tightly with a 90-degree rotation and a small rotational torque. Ball valves are suitable for on/off and shut-off valves, but recent developments have designed ball valves to make them throttle and control flow, such as V-shaped ball valves. Pneumatic V-type ball valve is a kind of control valve with quarter-angle rotary structure, which can be divided into pneumatic V-type regulating ball valve and pneumatic V-type shut-off ball valve. It is used in conjunction with a valve positioner for proportional adjustment.

  

The main characteristics of the high-pressure ball valve are that it has compact structure, good sealing, simple structure, easy maintenance, the sealing surface and the spherical surface are often in a closed state, not easy to be eroded by the medium, easy to operate and maintain, suitable for general working media such as water, solvent, acid and natural gas, and also suitable for media with poor working conditions, such as oxygen, hydrogen peroxide, methane and ethylene, etc., which have been applied in many industries. The ball valve body can be monolithic or combined. The valve body form is the integral forged valve body (within DN50), the three-stage forged valve body (DN50 or above), the connection method is flange type, welded type, threaded type (suitable for PN45MPa or less), the O-type ball spool, and the flow characteristics are approximate quick opening characteristics.


The stem of the pneumatic high-pressure ball valve drives the valve core to rotate 90° in the valve body, which can realize the action of full opening and full closing. Intelligent control and positioning can be adopted, matched with the electrical valve positioner, and the operation can be controlled by inputting 4-20mADC signal and 0.4~0.7MPa air source, so as to realize the adjustment of pressure, flow, temperature, liquid level and other parameters. Q611 pneumatic high-pressure ball valve is divided into metal seal and soft seal according to its sealing performance. Pneumatic high-pressure ball valve has the advantages of compact structure, small size, stable operation, good sealing, easy maintenance and easy installation. Pneumatic high-pressure ball valve is suitable for occasions where the medium is viscous, particle-containing and fibrous. Pneumatic high-pressure ball valves are mainly used in petroleum, chemical industry, teaching equipment, light industry, high-pressure equipment, papermaking and other industrial automatic control systems for long-distance centralized control or local control.


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