Because the two-position three-way solenoid valve has zero pressure start, good sealing performance, fast opening speed, good reliability, long service life and other characteristics, so not only in the dual-temperature dual-control, multi-temperature and multi-control refrigerator, but also widely used in medical equipment, refrigeration equipment, instruments and meters, metallurgy, pharmaceutical and other industries.
When the coil of the two-position three-way solenoid valve is not energized, the spool is in the original position, so that the mouth of the tube 1 is closed, the mouth of the tube 2 is open; the coil is energized to produce a magnetic field will be sucked up by the spool, the mouth of the tube 2 is closed, so that the mouth of the tube 1 is open.
Two three-way solenoid valve is the most used, it can be used in production to connect or cut off the air source, so that the pneumatic control membrane head airway switching.
Solenoid valves are composed of a solenoid coil and a magnetic core, which is a valve body containing one or several holes. When the coil is energized or de-energized, the operation of the core will cause fluid to pass through the valve body or be cut off for the purpose of changing the direction of the fluid.
Extended information
1, solenoid valve coil burned out, you can remove the wiring of the solenoid valve, measured with a multimeter, if the open circuit, the solenoid valve coil burned out. Reasons have coil moisture, caused by bad insulation and magnetic leakage, resulting in excessive current in the coil and burned, so to prevent rain into the solenoid valve.
2, in dealing with the switching system solenoid valve failure, should choose the appropriate time, such as the solenoid valve is in the loss of power to deal with, if in a switching gap processing is not complete, can be suspended from the switching system, from the processing.
3, solenoid valve control of many media, according to the environmental requirements of the choice of auxiliary functions: explosion-proof, check, manual, water fog, water, diving.
Baidu Encyclopedia - two five-way solenoid valve