Pipe disconnector

摘要

In a pipe disconnector having a backflow-prevention valve (R-valve) and having a discharge valve for drainage water, the two valves lie axially on behind the other and have a common, tubular closure member which is open on both sides, can be displaced axially, is actuated, counter to its spring pressure, in the opening direction of the R-valve axially by the pressure or the inflowing clean water and is of such a length that one valve is closed before the other is opened and vice versa. In order to simplify and reduce the costs of the production, the pipe disconnector can be connected to a single-pipe-connection pipe piece (1) which exhibits an opening (16), connected to the clean-water discharge line (14), and an annular chamber (17) which surrounds said opening and is connected to the clean-water supply line (13). The backflow-prevention valve is a pipe piece (3) which is open on both sides and the drainage-water discharge valve is a valve body (4) which dips into the piston cylinder (5). In the throughflow position of the piston cylinder (5), the clean-water supply line (13) and the clean-water discharge line (14) are connected to one another, the piston cylinder (5) being closed, but in the disconnection position the clean-water discharge line (14) and the drainage-water discharge opening (15) are connected to one another, the annular chamber (17) being closed by mouth border parts of the piston cylinder (5). <IMAGE>