Adaptor for use with electrofusion fittings

摘要

The adaptor (2) for use with an electrofusion fitting (3) for enabling a thermoplastic pipe (4) to be coupled to a dissimilar pipe includes a housing sleeve (21) for coupling at one end to the dissimilar pipe with the opposite end being formed on its outer surface with an annular ribbed section covered by a plastic sleeve (22). An anchoring ring (23) overlies the annular ribbed section of the housing sleeve (21) and is effective to firmly anchor the plastic sleeve (22) to the annular ribbed section of the housing sleeve (21) during electrofusion of the plastic sleeve (22) to one end of the electrofusion fitting (3), and of the plastic pipe (4) to the opposite end of the electrofusion fitting (3).