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| 700X pump control valve is installed at the pump's outlet in high building and other feeding system to prevent fluid flowing backwards. Before the pump stops, the valve closes 90% or so ahead to prevent water-hammering and water-hitting at pump's instant stop; after the pump fully stop, the valve close fully to prevent the fluid flowing backwards at the outlet of the pump to protect the pump and prevent the pump turn backwards due to backward fluid. It is a necessary protection equipment for pump. It is flow-line designed and it can open or close according to electric-magnetic valve's pilot. It is safe to use and it can effectively prevent water-hammering and water-hitting. It's life is very long and it is easy to install and to maintain this kind of valve. |
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