2W水用黃銅、不銹鋼電磁閥分為單電控和雙電控，指的是電磁線圈的個數(shù)，單線圈的稱為單電控，雙線圈的稱為雙電控，2位2通，2位3通一般時是單電控（單線圈），

2W水用黃銅、不銹鋼電磁閥從原理上分為三大類（即：直動式、分步直動式、先導式），而從閥瓣結(jié)構(gòu)和材料上的不同與原理上的區(qū)別又分為六個分支小類（直動膜片結(jié)構(gòu)、分步重片結(jié)構(gòu)、先導膜式結(jié)構(gòu)、直動活塞結(jié)構(gòu)、分步直動活塞結(jié)構(gòu)、先導活塞結(jié)構(gòu))，按照氣路數(shù)分為2位2通，2位3通，2位4通，2位5通。

電磁閥分為單電控和雙電控，指的是電磁線圈的個數(shù)，單線圈的稱為單電控，雙線圈的稱為雙電控，2位2通，2位3通一般時是單電控（單線圈），

2W water brass, stainless steel solenoid valve in a sealed chamber, at different locations with holes, each hole leads to a different pipeline, the middle chamber is a valve, both sides are two electromagnets, which face the magnet coil energizing the body to which side will be attracted to different file live or leaked oil discharge hole by controlling the movement of the valve body, and into the hole is always open, the hydraulic oil will enter a different outlet pipe, then through pressure oil cylinder to drive the piston, the piston and drive the piston rod drive mechanism moving. Thus by controlling the solenoid current is controlled mechanical movement.