Slow Closing Check Valve 300X

When the valve is fed from the inlet end, the water enters the main valve control room through the micro-filter, needlevalve, check valve, and then flows out through the ball valve. The opening of the needle valve is less than the opening ofthe ball valve, so the drainage speed ofthe main valve control room is greater than the inlet speed, and the pressure of thecontrol room is reduced, so the main valve is opened to supply water downstream.When the pipeline stops supplying water, if the water begins to backflow, part of the water enters the main control room。