I need to replace a frost free hose bib that drips. How do I remove the hose bib? I'm thinking that I just need to chip away the mortar around the bib and unscrew with a pipe wrench, but since the device is screwed several inches into the wall, I don't want to bend a pipe in the wall by doing something wrong.

The original problem is that the bib has a cap on top, a drip valve on the bottom and an anti-siphon brass device screwed onto the hose threads. Whenever the bib is used, water drips from the drip valve that is just behind the hose threads. I think the real problem is with the anti-siphon device because sometimes I can remove it and push in the plastic valve, which puts pressure back on the bib and the drip valve stops dripping. Any advice on this is appreciated. I know that this anti-siphon device can be replaced a lot easier than replacing the whole frost free bib.
Thanks much.

noplumber

I'm not familiar with a "drip valve" but the cap on top is a vacuum breaker I believe. Not certain what unit you have. As to replacing the whole thing, DON'T just try to wrench it loose. Many times installers will sweat the copper supply right into the rear of the unit and the only way to replace it is to open up the wall on the inside, cut the supply line and then redo the whole thing in a way that is easier to service later. Sharkbite fittings will do the job without sweating or cementing CPVC. I believe Sharkbite fittings can be used in non-accessible locations under a lot of codes, but check first. I would try and find a parts source and rebuild what you can before replacing the whole thing. Usually you only have to replace the whole thing when the seat goes bad or you let the hose on over the winter. :^)

EPMiller