Bottom valve is a kind of energy saving valve, generally installed at the bottom of the water pump underwater suction. Limit the water pump pipe liquid return to the water source, play only in the function of not out. There are a lot of water and reinforcement on the valve cover, which is not easy to plug, mainly used in the pumping pipeline. The role of channels and supports. Caliber of single, double, multi - valve type. There are flanged connections and threaded connections.
Structure and Principle:
The bottom valve is composed of valve gauge, disc, bonnet, bushing, sealing ring and other parts. See the figure below for details. The water from the water source enters the valve body from the bonnet. Under the action of fluid pressure, the valve disc opens the water, when the outlet pipe pressure will quickly close the valve disc, the liquid will not be back to the water source, which plays a role of unimpeded pumping and saving water loss.
