300X Slow Closing Check Valve is one type of intelligent valve which is applicable to pump outlet of the high buildings water supply system and other water supply system to prevent of fluids backflow and water hammer. The valve combines three functions, including electric valve, non-return valve and water hammer eliminator, so it can improve effectively the water supply system safety and reliability. It integrates slow opening, slow closing and water hammer eliminating technical principles to prevent of pump start water hammer and pump stop water hammer. Just only needing operate the pump motor open and close button to achieve automatically the valve open and close according to the pump operating instructions. It has big flow but less pressure loss.
Ball Valve 
