Electric welding valve 
 First, an overview of electric welding valve 
 Electric welding valve from the valve and Z-component multi-turn electric actuators, electric welding to accept 380VAC voltage cut-off valve can be remote switch operation, and may need to adjust with electric modulating actuators. The gate valve is plug-shaped pieces of the valve, seal leaving it flat or cone, the fluid along the centerline of the valve in a straight line. Stem form of exercise with lifting rod (stem lift, hand wheel is not lifting), but also lift rotating rod (with hand wheel and stem spin down, the nut in the valve body). Valve is only applicable to fully open and fully closed, generally not to make adjustments and throttle. 

 Electric explosion-proof electric welding welding valve valve 
 Second, the performance standards of electric welding valve 
 Design and manufacture of structural length of the pressure - temperature test - test 
 E101 
 JB/T3595 
 DL/T531 E101 
 JB2766 
 GB/T15188.1 E101 
 JB/T3595 E101 
 JB/T9092