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How to remove this antisiphon valve?

14K views 19 replies 9 participants last post by  ben's plumbing 
#1 ·
Is there a way to remove this? The valve is completely broke and no water actually makes it into the hose. It looks like the whole thing might unscrew, but I don't know and don't want to force it.

Pipe


Thx
 
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#4 ·
Some have a scew on the side of them that has to be loosened.
Sure your turning it the right way, it's upside down so it needs to be turned counter clockwise.
 
#10 ·
Tried unscrewing the entires hose valve. But when I do, instead of unscrewing, the pipe coming out of the wall with the male threads turns with it. Tomorrow I'll try spraying some liquid wrench at the junction of the valve and the threaded pipe coming out of the wall and see if that'll loosen the threads up enough. Other ideas welcome. But if I break off a pipe in the wall trying to get the hose valve off, this becomes a much more serious and costly problem.

If liquid wrench doesn't get it l either deal without using that faucet or call a plumber.

As far as drilling out the set screw - any special bit required?
 
#13 ·
sparky472 said:
What kind of wrench is best to use in this situation? Isn't much to hold on to but threads
In your situation, I'd use a pair of high quality adjustable pliers ( channel locks) on the copper and an adjustable wrench on the bib- or pliers on both.
Pliers are directional like pipe wrenches so use them in the right direction- the jaws will bite into the fitting better.
When reassembling, use an adjustable wrench on the bib so you scratch the finish
 
#14 ·
TheEplumber said:
In your situation, I'd use a pair of high quality adjustable pliers ( channel locks) on the copper and an adjustable wrench on the bib- or pliers on both.
Pliers are directional like pipe wrenches so use them in the right direction- the jaws will bite into the fitting better.
When reassembling, use an adjustable wrench on the bib so you scratch the finish
Awesome. Thx. I'll give it a shop tomorrow.
 
#16 ·
Ben has it right. The valve is old and shot. Put a back up wrench on the male adapter right at the wall and put a pipe wrench on the valve. Pull up on the back up while you push down on the pipe wrench and unscrew the valve and remove it. Replace it with a ball valve.

PS Don't forget to turn the water off at the main or on the inside valve first.
 
#17 ·
If the pipe is turning then it might be unthreading from a fitting in the wall. This could be a good thing. Because once it's out you can make a new one the same size, and put a new spigot on at the same time. If you're really lucky then a new frost-proof kind of spigot in the same length could be used. Bring the whole shebang to a plumbing supply place (not a box store) and have them help you get the right parts.
 
#18 ·
If the pipe going into the wall is turning then you are going to need two wrenches. I would try drilling out the set screw or use a dremel with a cut off wheel and very carefully slice through the anti siphon. Perhaps cut a V around the set screw so that piece will fall out. Then it will unscrew.
 
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