The 700X pump control valve is a type of pump outlet that is installed in high buildings and other feed water systems to prevent reverse flow of the dielectric valve. When the pump is about to stop the water supply, the valve slowly closes about 90 percent, preventing the water hammer and water hammer from stopping the pump. When the pump stops completely, the valve closes completely and prevents the pumping of water from the pump. Effectively protect the pump from the reflux shock. The product is an essential protective device for the export of pumps. The valve is streamlined and is designed by the solenoid valve, which is safe and reliable to prevent water hammer and water hammer. Long service life, easy installation and maintenan.