产品特点：
阀关闭后在通电或断电都不会自动开启，需手动拉开，保持打开状态，节能、安全；不锈钢阀芯，在长时间不动作情况下，通电启动阀门，关闭反应迅速；零泄漏。

主要技术参数：

工作原理：
A：当安全阀需要打开时，旋下防护罩（如防护罩中间有螺纹孔型，将他旋在联动杆上当手柄使用），用力拉手柄，阀打开。
B：当安全阀需要关闭时，线圈通电不超过30秒钟，阀1秒内迅速关闭。

特殊功能：
信号反馈：当阀打开时，信号公共线和开信号线接通；当阀关闭时，信号公共线和关信号线接通。
手动功能：安全阀需要关闭时，旋下手动防护罩，用力按手动柄，阀关闭。

规格尺寸：

Applications:
It is widely used in industrial furnaces, boilers, gas pipelines, gas treatment plants, filling stations, gas leak alarm systems, security systems, fire alarm systems, explosive media, cut off the city or the factory; when that potential accidents Quick cut, time to stop fatal accidents.

Features:
Valve is closed off in the power or will not open automatically, manually opened, remains open, energy saving, safety; stainless steel spool, in a long time does not move cases, the power-up the valve, close the quick response; zero leakage .

Main technical parameters:

How it works:
A: When the safety valve requires open, unscrew the protective cover (such as the middle guard screw hole, and put him in the rotation linkage rod using the handle), pull the handle, the valve opens.
B: When the safety valve need to close when the coil power of not more than 30 seconds, turn off the valve quickly within 1 second.

Special features:
Signal feedback: When the valve is opened, the signal common line and signal lines connected to open; when the valve is closed, the signal common line and off signal line connected.
Manual functions: safety valve need to close time, unscrew the hand guard, forced by manual handle, the valve closed.

Size: