H142X液压水位控制阀是一种自动控制水箱、水塔液面高度的水力控制阀。 H142X hydraulic water level control valves is a kind of automatic control water tank, water tower liquid surface of the height of the hydraulic control valves. When the water drop more than the default value, the ball float valve is opened, the piston chamber pressure is reduced, the piston and the pressure difference formation, on the pressure difference under the role of disc open for water supply homework; When the water level rose to the default height, ball float valve is closed, the piston chamber pressure increase the disc close to stop water supply. H142X hydraulic water level control valves so reciprocating automatic control liquid surface set in height, realization of automatic water supply function. Hydraulic water level control valves used in industrial and mining enterprises, civil construction of all kinds of water tank (pool), water tower automatic water supply system. And can be used as atmospheric boiler circulation water supply control valves.