Pneumatic valves have the advantages of fast switching and low price. Correct selection of pneumatic valves requires the use and characteristics of related accessories to achieve stable performance and long service life. In addition to improving the quality of the valve, it is also The matching of accessories is also very important. Here, I will introduce the characteristics and uses of several main accessories of pneumatic valves.
Accessory 1: Solenoid valve
The exact name of the solenoid valve should be the electromagnetic directional valve. The solenoid valve equipped with pneumatic valve mainly has two five-way and two-way three-way. The two-position five-way solenoid valve is usually used in conjunction with a double-acting pneumatic actuator, and the two-position three-way solenoid valve is used in conjunction with a single-acting pneumatic actuator. The pneumatic valve is used to switch the air intake and the air source through the solenoid valve. The air is discharged to achieve the function of opening and closing the valve. The solenoid valve has a single electric control solenoid valve and a double electric control solenoid valve. Explosion-proof solenoid valves should be used in special flammable and explosive occasions.
Accessory 2: Limit switch
The limit switch is a long-distance transmission signal for opening or closing of the valve. The explosion-proof limit switch should be used in special flammable and explosive occasions.
Accessories 3: Air source treatment triple
Air source treatment triples include pressure reducer, filter, and oil mist device. The pressure reducer is mainly used to stabilize the air source and can adjust the pressure of the cylinder. The greater the pressure, the faster the valve opening and closing speed, which increases the friction of the valve and easily damages the sealing ring, thus affecting the service life of the valve; filter and The lubricator can filter the impurities in the air, clean and automatically add lubricant to the cylinder. Therefore, we recommend that the user is equipped with a three-piece valve for each valve, so that the pneumatic actuator can be better maintained and used for a longer time.