Doing my recent project to replace my washing machine water valves I first tried to unscrew my old boiler drain valves from the externally threaded extensions. They wouldn't budge no matter what I tried (sort of like the other poster in the thread below). Since I had to install new externally threaded adapters for the new single handle valve I just cut the old ones out and saw that the valve and externally threaded extensions seem to be machined out of one solid piece of brass. No wonder they wouldn't unscrew!
Yes, that's how it was (in a washer box). I was just replacing the valves in the washer box with a single handle ball valve. I thought there were going to be female valves threaded onto the male piece... imagine my surprise when it wouldn't come off. I have never seen one of these before but then I have hardly ever been to a proper plumbing supply house, just big box and local hardware.
Originally Posted by Peppe1019
They are usually mounted inside a washer box and have a plastic nut to attach to the underside of the box.. The threads are longer in order to be able to attach to the box and adapt to it as well.
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