Check valve with detachable insert

The utility model discloses a check valve with a detachable insert, and belongs to the technical field of check valves, the check valve comprises a PPR (pentatricopeptide repeats) shell and a check valve insert, the check valve insert is clamped and inserted in the PPR shell, the PPR shell comprises a water inlet end, a water outlet end and a detachable end, the check valve insert is positioned above the detachable end, the check valve insert is replaced through the detachable end, and the detachable insert is replaced through the detachable end. The dismounting end comprises a male thread plug and a female thread insert, the male thread plug is used for plugging the dismounting end, and the female thread insert is arranged between the male thread plug and the shell wall of the dismounting end to achieve sealing. According to the utility model, the original simple advantage is reserved in structure, the assembly is convenient and fast, meanwhile, the internal structural parts can be replaced, and the internal