Control element for fluids

摘要

The control element for fluid has a casing (12) containing two control chambers (20) isolated from each other, with a working connection and two pressure connections. Two connections each have a sealing seat (22). A switching element (14) can move in the casing. Each switching chamber has a sealing part to act with the sealing seats to open or close them. There is an operating device for the switch element, which can move it to any one of three positions.