| 摘要 |
A safety valve comprising a valve housing (8) with an inlet and an outlet and a membrane gasket (7) to seal off the fluid connection between said inlet and said outlet. The membrane gasket (7) is adjustably influenced to cushioned closure of the connection against a seat (21) in the inlet. An upper part (20) comprises a stem housing (4), having a stem (1) to which the membrane gasket (7) is connected, a spring (2) acting towards the stem. A control wheel (5), adapted to pull the stem out of the valve seat (21), is connected to the valve housing (8). The spring housing (4) has an integrated buffer (3) with the same internal diameter as the spring housing (4). The buffer (3) and the spring housing forms a continuous guide for the spring (2) and stem (1), and said buffer (3) has a lower surface adapted to form a contact surface for the membrane gasket (7) when the valve is in the fully open position. Also disclosed is a click-fixation for the assembling of the wheel to the stem. |
