The micro resistance slow closing check valve is mainly used at the outlet of industrial and urban water supply and drainage pipelines, high-rise residential buildings, high-end hotels, and pressurized water pumps. The design fully considers the requirements of the usage environment and adopts a sloping plate structure to achieve vibration free, noise free, and smooth operation, ensuring a quiet hotel and residential environment with energy-saving effects. By delaying the closure, local backflow water is released into the system, greatly reducing the water pressure impulse caused by pump shutdown and eliminating the occurrence of destructive water hammer peaks. The interception seal is made of nitrile rubber, which has good sealing performance, shock absorption and wear resistance, long service life, and easy maintenance.