Rated 1 out of 5Â by Richard2NE1 Straight coupler - not adaptor
I bought this to convert from old 1/2" pipe with an external diameter of 15.5mm to modern 15mm pipe.
Unfortunately this product is actually just a 15mm to 15mm straight solder ring coupler. I have confirmed this with callipers and both ends have an internal diameter of 15.1mm.
This product is essentially an expensive version of 66884 (Solder ring straight couplers 15mm)
The packet and product both have 15mm x 1/2" printed on them, but the product is not actually an adaptor for anything.
Please see pictures for calliper measurement of each end.
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