精产国品一二三产品99_麻豆视传媒短视频欢迎您_91免费视频网站_中字在丈夫面前被黑人耍了_日本成人精品_写作业插一次_在线不欧美_亚洲成色7777777久久_我的小后妈韩剧在线播放免费_仁心解码第一部_日本一道一区二区视频_免费国产无人区码卡二卡3卡_a级免费网站_163黄页网在线观看_离婚前规则在线观看_99热这里有精品_18禁止观看免费私人影院_蜜桃97a_一二三区无线乱码2021_国产传媒果冻天美传媒怎么入职

Imported high viscosity solenoid valve working principle:

Normally open: when the coil is energized, the pilot valve core by the reset spring, the pilot hole is closed by the piston, valve chamber orifice pressurizing and reset spring thrust, the electromagnetic valve is closed.

When the coil is de-energized, the pilot valve core by the reset spring, the pilot hole is opened, the valve cavity pressure relief, pressure to push the piston cavity medium, the solenoid valve opens.

Normally closed: when the coil is energized, the pilot valve is open, pilot hole, cavity pressure relief valve on the piston cavity, rely on medium pressure to promote, the solenoid valve opens.

When the coil is de-energized, the pilot valve core by the reset spring, the pilot hole is closed by the piston, valve chamber orifice pressurizing and reset spring thrust, the electromagnetic valve is closed.