working princel: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 ex
Globe valve, also called globe door, is the most widely used as a valve, the reason why it is popular is that the process of opening and closing the friction between
1: automatic water valves can be mounted horizontally or vertically, but not inverted, that is not in the upper part of the plastic knob 2: watch the outlet pressure gauge, adj