| 摘要 |
A push coupling for pipes, the push coupling comprising a housing (10) with at least one opening (12) for a pipe; at least one sealing element (30) to seal between a pipe and the housing (10); and at least one locking element (44) to fix a pipe in the housing (10). The push coupling comprises also at least one transfer element (22) inside the housing (10), the transfer element (22) is arranged to move axially to permit a pipe to move the transfer element (22) and the transfer element (22) indicates, via movement, that the sealing element (30) is performing its function. The push coupling comprises an element (26) which together with the transfer element (22) produces a sound when the transfer element (22) is moved. For example, a movement of the transfer element (22) gives an audial confirmation that the sealing element (30) has direct contact with a pipe in the push coupling and that the pipe is then fixed by the locking element (44). A method for ensuring that a pipe has been correctly coupled with a push coupling, the method comprising the step of the push coupling producing a sound when the pipe has been correctly coupled with the push coupling. |
