Solenoid valve in the liquid system used to achieve the liquid off or flow direction changes, it usually has a coil can be driven by electromagnetic force driven spool, spool in different locations, the solenoid valve access It is different. There are several working position of the spool, the solenoid valve is called a few solenoid valve: valve body interface, which is the number of solenoid valve access, there are several access ports, the solenoid valve is called a few pass solenoid valve. Solenoid valve installation, the general all interfaces should be connected well, the so-called working position refers to the spool position. When the coil is not energized, the valve core is in position A, and is in position B when the coil is energized. When the valve spool is in different positions, it acts on or off or on each interface. Solenoid valve two is the solenoid valve spool has two different working positions (on, off). Two-way solenoid valve, three-way solenoid valve on the body there are two, three channel mouth; such as two two-way solenoid valve is one into a (two channels, the most common) two three-way solenoid valve Control of the liquid is one into two (two are a normally open and a normally closed); pneumatic solenoid valve is one into an exhaust; hydraulic one out of a back to the oil.
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