| 摘要 |
1. Single-step maximum valve, consisting of a housing, inside which are a seat and a cut-off element together with a pressure spring, having a closable cover, regulating screw and inlet and outlet holes, characterized in that the cut-off element of the valve is a moving seat (10) with a smaller seat face (11) in the shape of a truncated cone with vertical angle α and a larger seat face (12) in the shape of a truncated cone with vertical angle β, while the valve-seat consists of an immobile sleeve (2) with a flat head (4) with a circumferentially situated seat face (5) in the shape of a truncated cone with vertical angle α and with a ring-type head (6) with a frontally situated seat face (7) in the shape of a truncated cone with vertical angle β, where β>α.<IMAGE>
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