摘要 |
In an insert valve that can be mounted in an insert connector (3) of a fluid line (1)and that has a cylindrical presetting element (15), which is rotatable relative to a valve housing (5) via an adjustment ring (14) and a transmission element (12), and unrotatable relative to the transmission element (12), and that guides a valve rod (22) carrying the valve closing piece (28) to be displaced to a limited extent coaxially, relative to the valve seat, the presetting usually has an axially projecting wall part, which, in dependence of the rotary angle position of the presetting element leaves openings (34) open or covers them partially or completely. With complete covering, however, a leakage may occur, which is not desired. According to the invention, however, a rotation of the adjustment element (14) in relation to the valve seat (43) and the transmission element (12) displaces the presetting element (15) in the one direction axially until a first stop (31; 21) and in the other direction until the valve closing piece (28) bears on the valve seat (43). Thus, here the valve closing piece (28) provides a complete blocking of the flow when the kv-value is set at 0. <IMAGE> |