| 摘要 |
A device is described comprising a pressure switch (1) made up of a main body (2) and of a support tang (3), and a safety valve (4) having one coupling end (16) shaped in such a way as to embrace the tang (3) of said pressure switch (1), with the possibility to rotate by 360 DEG around the axis of the tang (3) of the same pressure switch (1). Ring-shaped tightness means (14) are provided which are interposed between the valve (4) and the tang (3) of the pressure switch (1) in such a way as to allow the water tightness in every angular position of the valve (4). <IMAGE> |
