Earlier this spring, a frost-free hose bib was leaking out of the top. I tried taking it apart a little and making sure the O-ring was in place correctly. It seemed fixed at the time and then I didn't use it for a few weeks. Next time I turn the hose valve on I had not yet opened another valve just after the hose bib, and that top popped off somewhat violently. Is there anyway to repair this hose bib or do I need to reinstall a new frost-free hose bib altogether? What parts should I be looking to replace?

As you'll see from these photos, the plastic within the hose bib's top broke into two separate pieces. It's difficult to get the plastic insert out, which makes me concerned I can't just plug a new part in there.

hose bib and top part that came off

A closer look at the hose bib with its plastic part broke off:

hose bib with broken top

Here's the top parts that came off, along with a washer - all of which I found scattered about after the eruption when the white plastic part broke.

top parts

O-ring I found on the ground

  • 1
    Can try at a real hardware(not big box) or plumbing store if they have/can get repair parts for it. Most frost free taps need to be drained of water before freezing to work. Turn off those small valves for the hoses before the big valve is turned off, and they will burst from freezing.
    – crip659
    Commented Apr 13, 2023 at 17:09
  • 3
    There are antisiphon repair kits and also "complete overhaul" kits for these usually in stock at hardware stores. They cost like $3 so if you're not sure which one to buy just buy them all. It's also easy and not expensive to replace the whole thing ... so long as the other end of it is easy to access it's a 20 minute job.
    – jay613
    Commented Apr 13, 2023 at 18:02
  • @jay613 thanks, I am a very novice plumber so I'd rather not mess with this, but there is easy access + interior shutoff valve + flexible pex tubing on the inside, so this is probably as easy as it gets for replacing a hose faucet. I'll get a few kits and return what I don't end up using.
    – cr0
    Commented Apr 13, 2023 at 18:09
  • 1
    @cr0 With that information, the easiest way becomes to be replace the whole faucet. Only one trip to get a new faucet with no return trips. Trying to do the repair way would be only slightly harder, but more enjoyable fix.
    – crip659
    Commented Apr 13, 2023 at 18:17
  • 1
    The right parts are not expensive. It's easier to just replace it than to try and change it up. A well system is, if anything, more subject to pressure loss than most municipal systems, and the back-siphoned water does not need to make it all the way to the well to be an issue.
    – Ecnerwal
    Commented Apr 13, 2023 at 23:33

1 Answer 1


Anti-siphon repair kits are inexpensive and easy to install. We can't recommend products here but here is one example - plenty out there.
enter image description here

The broken plastic in the bib housing should pop out with a little pressure. Try prying it up with a small screwdriver. You have nothing to lose if your thinking about replacing the entire faucet anyway.

  • The problem is that the middle part (in the image you shared) broke off while inserted in the hose bib, and I haven't found a way to get it out yet to replace it.
    – cr0
    Commented Apr 13, 2023 at 20:32
  • Following up on this, after reading @Ecnerwal answering this question diy.stackexchange.com/questions/250155/water-hose-connector/… I realized I could push the broken black plastic piece that was stuck in the hose bib, turning it until it unscrewed. Now I'll go get an anti-siphon repair kit
    – cr0
    Commented Apr 14, 2023 at 15:30
  • @Ecnerwal - yours is a better answer than I had.
    – HoneyDo
    Commented Apr 14, 2023 at 23:50

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.