Analysis of pneumatic valves and electric stainless steel ball valve difference
Pneumatic valveAnd electric stainless steel ball valve is now on the market with a relatively wide range of two valves, then what are the differences between the two?
Appearance difference: It is composed of actuator and valve body. The limit switch of electric product is in the electric equipment. The pneumatic valve has limit switch, air source filter and solenoid valve.
Time difference: pneumatic products switch faster, DN50 products can switch in 1 second, electric products are relatively slow to switch, generally need 15-30 seconds to switch.
Cost problem: relatively speaking, the cost of electric stainless steel ball valve is higher. If there is a gas source on site, pneumatic products are advocated (the general gas source pressure is 4-6kg), and the applicability of pneumatic products on the market is higher now.
Life expectancy problem: the life expectancy of electric products is relatively low, and that of pneumatic products can be switched on and off many times. (if electric products want to complete more than 100,000 times unless brushless motors are used, they can reach about 300000 times, but they can only be used for gears of 50mm, and cannot be used after 50nm. relatively speaking, ball valves below 50nm can only be equipped with DN32 caliber, and butterfly valves can be equipped with DN100 caliber or less).
Waterproof: Electric products are not as waterproof as pneumatic valves, and their waterproofness is actually not bad. However, due to some customers not connecting properly during wiring, water leakage will occur. Many electric products are used outdoors. In the plum rains season in the south, if the temperature difference is too large, condensed water will occur. Excessive condensed water will cause internal moldy short circuit, and the circuit board inside will simply be broken by condensed water, therefore, we advocate that customers who buy electric products should use electricity 2-3 times a month without using it. And the cylinder does not matter, the waterproof of pneumatic products will be better.
Switching method: The pneumatic valve is driven by the air source (the air source comes from the air compressor). After the air source enters, the valve is closed, and the valve stem is rolled and opened when the air is discharged outward. The electric stainless steel ball valve is a 90 ° rolling switch valve.