초록 ▼

A method is provided for replacing an existing service pipe carrying fluid to an outlet within a property with a replacement service pipe. In the method the outlet is disconnected within the property from the existing service pipe in such a way that both during and after disconnection fluid is preve

A method is provided for replacing an existing service pipe carrying fluid to an outlet within a property with a replacement service pipe. In the method the outlet is disconnected within the property from the existing service pipe in such a way that both during and after disconnection fluid is prevented from escaping into the property. A desired length of replacement service pipe is then fed into the existing service pipe in such a way that during and after the feeding step fluid is prevented from escaping into the property. The outlet is then connected to the outlet end of the replacement pipe in such a way that during the connection fluid is prevented from escaping into the property and after the connection step fluid is allowed to pass to the outlet solely by way of the replacement pipe.

대표청구항 ▼

[ We claim:] [1.] A seal for use in replacing an existing fluid-carrying pipe with a replacement pipe, the seal comprising:a tubular body of a flexible material, the body having a rear portion for connection to the leading end of the replacement pipe and a front portion providing a barrier to the fl

[ We claim:] [1.] A seal for use in replacing an existing fluid-carrying pipe with a replacement pipe, the seal comprising:a tubular body of a flexible material, the body having a rear portion for connection to the leading end of the replacement pipe and a front portion providing a barrier to the flow of fluid along an annular gap between the internal wall of the existing pipe and the external wall of the replacement pipe, the seal also having a seal member preventing the flow of fluid through the bore of the seal, wherein the seal member comprises one of a puncturable seal member and a removable seal member permitting the flow of fluid through the seal, the front portion has a plurality of vanes disposed only around an external wall of the front portion, the vanes providing a barrier to the flow of fluid along the annular gap, and wherein the front portion includes an abutment and said abutment comprises one of a rear portion of one of said plurality of vanes and a rear shoulder of said front portion which is abuttable against a front edge of the replacement pipe.