Products Details

Pneumatic eccentric half ball valve is a common valve, mainly used for cutting off, distributing and changing the direction of flow in the pipeline system. The following is a detailed description of the pneumatic eccentric half ball valve:

Structure and working principle:

Pneumatic eccentric half ball valve is mainly composed of body, spool, cylinder and spool drive shaft four parts. The transmission structure includes cylinder, gear and drive shaft. The ball center of the pneumatic ball valve changes from the linear movement of the cylinder to the rotating movement of the driving gear and shaft, and the driving shaft drives the spool to rotate, and the valve is closed when the ball valve center is rotated to 90°.
The principle of pneumatic transmission is that high-pressure nitrogen enters the pressure reducing valve after filtering through the filter, and the pressure reducing valve transfers the gas adjusted to the rated pressure to the oil mist to become a mixture of oil and gas. After the oil and gas mixture enters the cylinder through the reversing valve, the pressure of the oil and gas mixture can convert the reciprocating linear motion of the cylinder into mechanical energy, so as to realize the opening and closing of the pneumatic eccentric half ball valve.
Advantages:

Pneumatic eccentric half ball valve has the advantages of quick and convenient switching, low fluid resistance, reliable seat sealing and long service life. Its unique design, the valve body is integrated with the cylinder and control loop, and can replace the manual ball valve, so it is widely used.
The fluid resistance is small, and its resistance coefficient is equal to that of the pipe segment of the same length. Simple structure, small size, light weight, sealing surface material widely used plastic, good sealing, has also been widely used in vacuum system.
Easy to operate, open and close quickly, from fully open to fully closed as long as the rotation of 90°, easy to remote control.
Cons:

The control system is relatively complex, the cleanliness of the air source medium is required to be high, and it is difficult to eliminate the fault.
Scope of application:

Pneumatic eccentric half ball valve is suitable for sewage treatment, pulp, alumina, urban heating and other requirements of tight occasions; Also suitable for power plants, hydraulic slag removal or gas pipeline control.
Installation and use:

Before installation and use, the valve must be inspected before installation and the switch operation test, and can be installed and used only under the condition of normal operation.
The installation of pneumatic ball valve should make the valve and the pipe flange concentric as far as possible, and the support is fixed, and the ball valve can not be affected by other external forces, so as to avoid damage to the valve seal and valve deformation.
The air source must be clean, as far as possible without oil and water, cleanliness should be less than 0.4 microns.
Maintenance and maintenance:

The pneumatic ball valve should be regularly maintained, the valve stem rotation should be refueled (oil) once every three months, and the air filter used with the pneumatic execution unit and the air filter should be discharged and polluted regularly.
Troubleshooting:

The fault handling practice of pneumatic eccentric half ball valve includes cleaning the air source of the pneumatic control loop and cleaning the damping hole of the reversing valve. By dredging the blocked damping hole and reassembling the reversing valve on line, the opening and closing of the pneumatic eccentric half ball valve return to normal.
Through the above information, you can fully understand the structure, working principle, advantages, disadvantages, scope of application, installation and use, and maintenance and other aspects of the pneumatic eccentric half ball valve.