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Ball Valve is a valve driven by compressed air. When purchasing pneumatic valves, only the specifications, categories, and working pressures are specified to meet the purchasing requirements. It can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. It is imperfect in the current market economy environment. Because pneumatic valve manufacturers, in order to compete with their products, each has made different innovations under the concept of unified design of pneumatic valves, forming their own corporate standards and product personality. Therefore, it is very necessary to put forward technical requirements in detail when purchasing pneumatic valves, coordinate with manufacturers to reach a consensus, and use it as an annex to the pneumatic valve purchase contract. This type of valve should generally be installed horizontally in the pipeline.

Pneumatic valves should pay attention to the following during transportation:

1. Lightweight plugs should be installed on both sides of the pneumatic valves.

2. Medium and small-caliber pneumatic valves should be tied with straw ropes and transported in containers.

3. Large-caliber pneumatic valves are also packaged in simple wooden frame solid packaging to avoid damage during transportation.

Installation and Use

(1) Before installing and using the pneumatic valve, the valve must be inspected and tested for switch operation. It can only be installed and used when it is operating normally.

(2) When installing the pneumatic valve, the valve should be concentric with the pipeline flange as much as possible and supported and fixed. The ball valve should not be subjected to other external forces to avoid damage to the valve's center seal and valve deformation. This will cause the valve to switch malfunction or damage the valve and make it unusable.

(3) Ensure that the power air source provided by the ball valve and pneumatic components must be clean and free of oil and water as much as possible. The cleanliness should be less than 0.4 microns.

(4) Before connecting to the air source, the air supply pipeline, air source interface, switch and other devices must be cleaned to prevent dirt and mud from entering the pneumatic actuator due to unclean pipelines and causing malfunctions.

(5) Copper or nylon pipes can be used for the connection of pneumatic actuators, solenoid valves, positioners, filters, pressure reducing valves, etc. To prevent dust and reduce noise, a muffler or a muffler throttle valve should be installed at the exhaust port.

(6) After installation, the pneumatic valve should be tested. The pneumatic actuator should be pressurized to the rated value, the pressure is 0.4~0.7 MPa, and the pneumatic ball valve should be tested for opening and closing to observe the valve opening and closing. It should rotate flexibly without blocking. If there is blocking in the switch, increase the air pressure and repeatedly open and close the valve until it can switch flexibly.

(7) When installing and debugging the switch type pneumatic valve, first use the manual device (manual button on the solenoid valve) to debug, and then power on and debug after it works normally.

(8) Pneumatic valves should be regularly maintained and repaired. The valve stem should be refueled (engine oil) once every three months. The pneumatic actuator unit and the air filter used in conjunction should be drained and discharged regularly. Under normal circumstances, it should be inspected once every six months and overhauled once a year.