This invention belongs to the field of
check valve technology, specifically a float-type
check valve, including a valve body, a mounting base, a float housing, and a hollow float. The float housing is rotatably assembled via a spherical seat on the mounting base. A
ball bearing is provided between the spherical seat and the ball head of the float housing, allowing the float housing to automatically adjust its verticality when the valve body is tilted, maintaining its central axis perpendicular to the horizontal plane. The float housing has a through hole communicating with the inlet, a spherical cavity accommodating the float, and a through groove communicating with the outlet. A
branch channel extending to the
valve seat sealing surface is opened on the inner wall of the through hole, which can assist in pushing the float open during forward flow. A multi-stage staggered-hole throttling disc is provided on the inner side of the outlet end to reduce the reverse flow velocity. The float housing adopts a split plug-in structure. This invention solves the problems of poor sealing, difficulty in opening under low pressure, and susceptibility to
water hammer in traditional float valves installed at tilted angles. It has advantages such as reliable sealing, sensitive response, and adaptability to complex installation environments.