| 摘要 |
The valve has a seating (36), main body (2) and spring (5) which produces compressive force exerted on the seating independently of the pressure from the pressurised medium. The medium exerts pressure on an appliance (3,6,7,8), inside the valve housing (1) which has a rigid middle part (12), operating in conjunction with the valve body (2) for restricting the medium's pressure. The appliance has at least one elastically deformable, cylindrical hollow body (3) in the form of a thin-walled, elastically deformable pipe (31). The housing and valve body are joined by at least one membrane (4) to form a compartment (35) inside the valve housing. One side of the hollow body is closed by the valve body, and the other by a closure element (32). The valve body forms a smooth or conical seating and has an axial hole through it (30). |
