產品特點：
閥芯為雙活塞閥芯，壽命長；換向和分流迅速；專制線圈不易燒毀；在真空負壓、零壓時都能正常工作。閥體安裝方向無限制。

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.

主要技術參數：

Main technical parameters:

工作原理：
一進一出：常閉式：當線圈通電時，2通向1，1與3關閉。當線圈斷電時，2與1關閉，1通向3。
　　　　　常開式：當線圈通電時，3與1關閉，1通向2。當線圈斷電時，3通向1，1與2關閉。
一進二出：當線圈通電時，1通向2，1與3關閉。當線圈斷電時，1與2關閉，1通向3。
二進一出：當線圈通電時，2通向1，3與1關閉。當線圈斷電時，2與1關閉，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