| 摘要 |
A safety valve, which can be exchanged under tank pressure, on propane liquid-gas tanks, combined with a closing valve mounted inside a preset longer weld-in tank socket, undergoes a reduction in the blow-off capacity due to the closing valve additionally required, which blow-off capacity is optimised again by the features of the invention by a rounded valve-inlet orifice (25) on the closing valve (2), which valve-inlet orifice (25) merges into a short sealing cylinder (24), at the inner wall of which the valve seal (26) of the plunging closing cone (4) performs a sealing function, which closing cone (4) thus brings about the least possible reduction in the cross-section of through-flow of the weld-in socket (3). By the cross-sections of flow formed inside the closing valve (2) and the safety valve (1) and by the configuration of the bell-like valve plate (11), overlapping the safety-valve orifice (14), with its valve-stem guide (9) in the spring-pressure piece (8), an optimum blow-off capacity of the safety valve (1) is achieved in combination with the closing valve (2) by a preset weld-in socket (3) which is welded into the tank wall (39). <IMAGE> |
