产品特点：
阀芯为双活塞阀芯，寿命长；换向和分流迅速；专制线圈不易烧毁；在真空负压、零压时都能正常工作。阀体安装方向无限制。

Applications:
It is widely used in metallurgy, petrochemical, pharmaceutical, tobacco, rubber, food and medical care, urban construction and environmental protection, plumbing, heating and air conditioning, fire safety, scientific research, landscape irrigation, energy industry and other fields.

Features:
A dual piston valve spool, long life; and diversion to the rapid change; authoritarian coil easily burned; in a vacuum, negative pressure, zero pressure can work. Valve mounting direction unlimited.

主要技术参数：

Main technical parameters:

工作原理：
一进一出：常闭式：当线圈通电时，2通向1，1与3关闭。当线圈断电时，2与1关闭，1通向3。
　　　　　常开式：当线圈通电时，3与1关闭，1通向2。当线圈断电时，3通向1，1与2关闭。
一进二出：当线圈通电时，1通向2，1与3关闭。当线圈断电时，1与2关闭，1通向3。
二进一出：当线圈通电时，2通向1，3与1关闭。当线圈断电时，2与1关闭，3通向1

How it works:
Entering and exiting: Normally closed: When the coil is energized, the two leads 1,1 and 3 closed. When the coil power, the 2 and 1 off, 1 leads to 3.
Always open: When the coil is energized, 3 and 1 off, 1 leading to 2. When the coil power, the 3 leading to 1,1 and 2 closed.
One into two: When the coil is energized, 1 leading to 2,1 and 3 closed. When the coil power, the 1 and 2 closed, 1 leads to 3.
Binary one: When the coil is energized, the two leading to 1,3 and 1 closed. When the coil power, the 2 and 1 off, 3 leading to a