Eliminates the need for energy in the case to prevent fluid flow SD9000 I. Features SD9000-16 / 25P eliminate water hammer piston: Valve Co., Ltd. Shanghai first to eliminate water hammer Stainless steel water hammer arrester to absorb water hammer piston Manual Model effectively eliminates all kinds of irregular water hammer shock waves in the water outside the hammer and fluid transfer system may generate surges occur, so as to eliminate destructive shock wave, serve the purpose of protection. Second, the principle SD9000-16 / 25P piston type water hammer arrester inside a closed container gas chamber, the bottom of a piston, when the shock wave incoming water hammer arrester, water hammer wave acting on the piston, the piston will go Yung gas chamber direction. Stroke capacity gas chamber and the gas pressure of the piston movement, the size of the water shock wave, the gas and the piston in the dual role of certain irregular water hammer pressure, up and down movement, the formation of a dynamic balance, thus effectively eliminating the irregular water hammer shock waves.