| 摘要 |
A moulded electrofusion fitting (104) for connection to a plastics pipeline or spigot (800), comprising:
a hollow body (14) formed with a tubular opening (16) that has a longitudinal axis and is adapted to receive an end of the pipeline or spigot (800) inserted in the direction of said axis as a close sliding fit against an internal surface of the opening;
an electrofusion element (22) formed in the internal surface in the opening (16);
a clamping surface on the end of the tubular opening (16);
a grip ring (500) adapted to fit said clamping surface; and
wherein, when a pipeline or spigot (800) is inserted in the opening (16) and the grip ring (500) is rotated about said axis, said grip ring (500) engages said clamping surface whereby said pipe (800) is gripped by said clamping surface,
characterised in that said clamping surface is at least partially located in a cold zone (602b) adjacent said electrofusion element (22). |
