Pneumatic valve and electric valve are two kinds of valves that are widely used in the market. What is the difference between pneumatic valve and electric valve?
Appearance difference: they are all composed of actuator and valve body, electric valve limit switch is in the electrical equipment, pneumatic valve limit switch, air source filter, solenoid valve.
Time difference: Pneumatic valves should switch quickly, DN50 pneumatic ball valves can be switched on and off in one second, and electric valves are relatively slow to switch, generally requiring 15-30 seconds to switch.
Cost: Relatively speaking, the cost of electric valves is higher than that of pneumatic valves. If there is an air source on site, it is recommended to use pneumatic valves (generally, the pressure of the air source is 4-6kg), and the applicability of pneumatic valves on the market is higher than that of electric valves. .
Life problem: The life of electric valve is generally less than 10,000 times of switching, and the life of pneumatic valve can reach millions of times of switching. , but it can only be used for gears of 50mm. If it exceeds 50nm, it cannot be used. Relatively speaking, it can only be equipped with a ball valve with a diameter of DN32, and a butterfly valve with a diameter of DN100 or less).
Waterproofness: The waterproofness of the electric valve is not as good as that of the pneumatic valve. The waterproofness of the electric valve itself is actually not bad. However, because some customers do not connect the wiring properly, it will cause water leakage. Many electric valves are used outdoors. Yes, in the rainy season in the south, if the temperature difference is too large, condensed water will be produced. Too much condensed water will cause internal moldy short circuit, and the circuit board inside will be easily damaged by the condensed water. Therefore, we recommend that customers who buy electric valves do not In the case of use, power on 2-3 times a month. The cylinder does not matter, the waterproofness of the pneumatic valve will be better.
Switching method: The pneumatic valve is driven by the entry of the air source (the air source comes from the air compressor). The electric valve is a 90° turn switch valve.
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