300X slow closing check valve silencer for a high-level, high-rise building design, 300X slow closing check valve silencer is used to solve high-rise building domestic water, fire water system, the required flow, high sensitivity, flow resistance is small, check the sealing effect, requires no water hammer occasions. The product has a reasonable design, long life and other advantages. Features: ◆ new structure is reasonable, rational use of stable and reliable hydraulic principles ◆ cybernetics work flow ◆ valve quick opening and closing slowly, water hammer impact (1 ◆ off time adjustable back only good sealing effect, long life time ◆ easy installation and maintenance installation requirements: ◆ Before 300X slow closing check valve silencer filter must be installed when the body ◆ Installation direction arrow marked convenient maintenance, should be around 300X slow closing check valve silencer. Install the appropriate path of the water shut-off valve to stay off certain space. ◆ should be able to ensure the maintenance of 300X slow closing check valve silencer position