| 摘要 |
A pipe-like connector comprises a spout portion 2, a parallel male thread portion 4, and a tapered male thread portion 6 connected to one another. The connector includes mounting means 7, eg for mounting to a treatment chemical container (10, fig 4), and may also include a hexagonally flattened section 5 which allows the connector to be lightened with a spanner. Preferably the connector is for use in supplying a central heating system with treatment chemicals. Preferably the connector wall at the join between the spout portion and the parallel thread portion is thinned 3 so that the two portions are detachable, eg by using a sharp knife, when it is desirable to use a filling loop (8, fig 4) and a dispensing gun. Alternatively the tapered thread portion may be screwed into the plug hole 16 of a radiator, and connected to yet another pipe-like connector via a hose 12.
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