fluorine lining gate valve

How Pneumatic Actuators Work

by:Lianke Valve     2022-04-23
Pneumatic actuators use pneumatic pressure to drive the actuators for opening and closing or regulating valves, and can be used with a variety of valves, such as pneumatic ball valves, pneumatic butterfly valves, pneumatic gate valves, pneumatic globe valves, pneumatic control valves, etc., with reliable performance, then pneumatic actuators How does it work? Let's take a look. The working principle of the pneumatic actuator: When the compressed air enters the pneumatic actuator from the A nozzle, the gas pushes the double piston to move linearly to both ends (the cylinder head end), and the rack on the piston drives the gear on the rotating shaft to rotate 90 counterclockwise. degrees, the valve is opened. At this time, the gas at both ends of the pneumatic actuator valve is discharged with the B nozzle. On the contrary, when the compressed air enters the two ends of the pneumatic actuator from the nozzle B, the gas pushes the double plug to move linearly to the middle, the rack on the piston drives the gear on the rotating shaft to rotate 90 degrees clockwise, and the valve is closed. At this time, the gas in the middle of the pneumatic actuator is discharged with the A nozzle. The above is the standard transmission principle. According to the user's needs, the pneumatic actuator can be installed in the opposite transmission principle to the standard type, that is, the clockwise rotation of the selected shaft is to open the valve, and the counterclockwise rotation is to close the valve. The single-acting (spring return type) pneumatic actuator A nozzle is the air inlet, and the B nozzle is the exhaust hole (the B nozzle should be equipped with a muffler). The inlet of the nozzle A is to open the valve, and the valve is closed by the spring force when the gas is cut off.
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