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

The compressed air is used to push the multiple sets of combined pneumatic pistons in the actuator to move, and the force is transmitted to the crossbeam and the characteristics of the inner curve track, which drives the hollow spindle to rotate. The compressed air disk is sent to each cylinder, and the air inlet and outlet positions are changed to change the spindle rotation. Direction, according to the requirements of the load (valve) rotation torque, the number of cylinder combinations can be adjusted to drive the load (valve) to work. The two-position five-way solenoid valve is usually used in conjunction with a double-acting pneumatic actuator. The two positions are controllable in two positions: on-off. The five-way valve has five channels for ventilation, of which one is connected to the air source, and two are connected to the double The inlet and outlet ports of the outer chamber of the acting cylinder are connected, and the two are connected with the inlet and outlet ports of the inner chamber. The specific working principle can refer to the working principle of the double-acting pneumatic actuator.

The pneumatic ball valve only needs to use the pneumatic actuator to rotate 90 degrees with the air source and a small rotating torque can be closed tightly. The completely equal internal cavity of the valve provides a straight flow channel with little resistance for the medium. It is generally considered that the ball valve is most suitable for direct opening and closing. The main feature of the ball valve is its compact structure, easy operation and maintenance, suitable for general working media such as water, solvent, acid and natural gas, and also suitable for media with harsh working conditions, such as oxygen, hydrogen peroxide, methane and ethylene. The ball valve body can be integral or combined.