WM343 diaphragm type multifunctional pump control valve is installed in the high-rise building water supply system and other water supply system of the pump outlet, to prevent the media back, water hammer and water hammer phenomenon of intelligent valve. The valve has the electric valve, check valve and water hammer eliminator three functions, which can effectively improve the safety and reliability of water supply system. And will be slow, slow, slow closing the elimination of water hammer technology integration, to prevent the pump water hammer and stop pumping water hammer. Just operate the pump motor open and close the button, the valve can be opened and closed according to the pump operating procedures, flow, pressure loss is small. Diaphragm type valve with 600 caliber.