The dhh44 micro resistance slow closing silencing check valve produced by our factory is mainly used in industrial and urban water supply and drainage pipelines, high-rise residential buildings, Binhe and pressurized water transmission pump outlets. In the design, the requirements of 7 service environment are fully considered, and the inclined plate structure is selected to ensure no vibration, no noise and stable operation, so as to ensure the quiet environment of hotels and residential buildings and have the effect of energy saving. The local backwater is discharged into the system by delaying the shut-down, so as to greatly reduce the hydraulic impulse of pump stop and backflow, and eliminate the generation of destructive water hammer peak value. The cut-off seal is made of nitrile rubber. It has the characteristics of good sealing performance, shock absorption and wear resistance, long service life and convenient maintenance.

(Flange connection size: according to JB / t7994)