應用范圍：
它廣泛應用在航天、船舶重工、石油化工、工業爐窯、鍋爐、城市給排水、采暖空調、消防設備、干燥設備、食品醫療設備、清洗設備、景觀噴灌、水廠等管道系統中。

產品特點：
參照各系列電磁閥中的特點應用，手動柄開關可以在電磁閥線圈無電或燒毀時，實現電磁閥打開和關閉。

工作原理：
參照各系列電磁閥中的工作原理使用。

工作原理：
常閉型：當電磁閥線圈不通電或燒壞，手動可以打開閥門。但手動處于打開狀態時閥不能自動控制。
常開型：當電磁閥線圈不通電或燒壞，手動可以關閉閥門。但手動處于關閉狀態時閥不能自動控制及線圈通電和斷電閥都不能打開。

Applications:
It is widely used in aerospace, shipbuilding Heavy Industry, petrochemical, industrial furnaces, boilers, urban drainage, heating and air conditioning, fire fighting equipment, drying equipment, food and medical equipment, cleaning equipment, landscape irrigation, water and other piping systems.

Features:
The series solenoid valve in the light of the characteristics of application, the manual switch can handle without electricity in the solenoid valve coil or burned, the realization of the electromagnetic valve is opened and closed.

How it works:
Reference to the series of solenoid valves used in the works.

How it works:
Normally closed: When the solenoid valve coil is not energized or burned, you can manually open the valve. However, when the valve is turned on manually not automatically control.
Normally open: When the solenoid valve coil is not energized or burned, you can manually close the valve. However, when the valve is manually turned off and can not automatically control the valve coil is energized and power can not be opened.