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Dean
Reviewed in the United States on January 28, 2025
Came in handy for hooking up an appliance. Good quality parts.
William Shrum
Reviewed in the United States on October 28, 2024
These brass fittings are intended to be used when you need to extend an existing 1/4 inch copper line or if you have two copper lines that you need to join together to make a longer line. The overall fit and finish is good with no sharp corners or edges to hurt you. They are made from solid brass and they include two brass compression ferrules for each fitting. The hex on the center part measures 11 mm across the flats, which just happens to fit a 7/16 inch wrench. The fittings on either end measure 13 mm across and are just a little too big for a 1/2 inch wrench to fit.When assembling these, there are a few points to keep in mind. The two pieces of copper tubing to be joined should be straight and cut squarely across the ends. A tubing cutter works good for this, I have had mixed results trying to use a hack saw to cut with. Make sure you slide the two end pieces onto their respective pieces of copper tubing, the right way around, before you place the small brass ferrules onto the pieces of tubing. The distance from the end of the copper tubing where the ferrule is placed is semi-critical, the main thing is that the tubing projects from the end of the ferrule a little bit. When the copper tubing is placed into the center piece, make sure it bottoms out on the small ledge inside the center piece, this will ensure that it is all the way through the ferrule. Now, the nut is threaded onto the center piece with the brass ferrule, captured between the nut and the center piece, sliding over the copper tubing where it is eventually compressed between the nut and the opening in the end of the center piece. This compression is what seals the connection. The initial tightening should be enough to deform the ferrule into making a tight connection over the tubing, you should not be able to pull the tubing out of the connector using your hands if you have tightened it enough. Once the brass ferrule is compressed over the tubing it will not come off again. So, if you make a mistake like not allowing the tubing to extend all the way through the ferrule, you will have to cut the tubing off behind the ferrule and place a new ferrule on the tubing and try again. New ferrules are available individually without having to buy a whole fitting. Using teflon tape on the threads of these fittings is a waste of tape and time, the threads do not seal, the ferrules do all the sealing. These fittings can be removed and replaced using the same ferrule over and over, just don't over tighten it, just enough to keep it from leaking.
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