I had a garden hose faucet head that was sprayed out when turned on, probably a stripped bolt or something on the valve. I have since replaced that old faucet head with a new faucet head but there in lies the problem. The old faucet head was 3/4 however when I tried to replace the faucet head with another 3/4 faucet head the piping doesn't seem to be the same 3/4 size as the new faucet head? I went to Lowes and tried to replace the faucet head with every imaginable faucet variety i could find however no 3/4, 1/2, or 5/8 will fit this piping. I was able to find one faucet head that, with enough plumbing tape, i am able to tightly screw on the head and hold the water from shooting out every where. So here are my questions, first why would piping that clearly fit an old 3/4 faucet head now not fit a new 3/4 faucet head? And second is my fix with the plumbing tape a permanent solution?

 

So here is the confusing part! First are we talking about a male threaded hose bib screwing into a female union/coupling?

If yes, there are really only 2 sizes 1/2" and 3/4" and they have not changed in decades.

You took the old one with you when looking for a new hose bib?

 

My faucet has two somewhat concentric parts that hold and seal the stem and there are three names. Fifteen minutes on Google and I could not find out which name goes to which part.

THe names are packing nut, stem nut, and bonnet nut.

You unscrew the outermost smaller nut and you may or may not uncover the packing and you may or may not be able to withdraw the stem. You unscrew the thingamajig behind it and the stem will now come out completely.

Some faucets have just one unscrewable thingamajig around the stem that uncovers the packing and also lets the stem unscrew all the way out.

This part, or both of them if there are two, have propritetary threads so matching up just the 1/2 or 5/8 or 3/4 will not necessarily get you a useful matchng part on Amazon Prime. So you may need to replace the entire faucet.

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No it is the other way around. A female hose bib screwing to a male union. And I did take it with me and pretty much was told the only solution would be to install a new coupling part.

 

patter -

When you say “union” do you mean an actual union with a nut, or do you mean a pipe nipple (section of steel pipe) sticking out from the house, onto which you screw the hose bib? Or does the pipe that you want to screw the hose bib onto, looks like a copper pipe with an adapter with male threads soldered onto that pipe end?

also is this the kind of thing you are using:

https://www.grainger.com/product/30U...g!703623028994!