New Construction.
Ok you have rough in plumbing. Now it is time to put your shut off valve on the stub outs.
how much pipe do you want to leave exposed between the euchion (spelling???) plate and the back of teh valve body? For a toilet I would suspect .. not much as it is visible. But what about under sinks?
The reason I ask is that I have recently had to replace some old valves and it is impossible to get compression ferrels off the pipe. It would be easy to cut the pipe off just behind the old ferrel and ad a new valve.. But if the pipe is cut, ie teh valve body is up against the euchinon you can not do this. You either have to pull the ferrel, which is nearly impossible or you crush the copper pipe. Or you have to knock out drywall and recess teh valve into the wall.
So, if in new construction you leave a bit of exact pipe you would be better able to replace the valve do the line.
Thoughts? What is done and what should be done?
Thanks.
Replies
ok - ferrel puller
I was told not to use a ferrel puller as they damage copper pipes. Well, maybe that could happen, butr I bought one and used one. Simplist thing I ever have done. Should have bought one years ago.
Thanks everyone. Never mind.
Personally, I am not a plumber, but my father was, .....In the case of shutoffs that are exposed I use a winged threaded 90 and use a nice chrome, brass, ect, nipple and threaded shut off. This way with the winged 90, I can sceure it well to blocking , before drywall of course.
I'm not a big fan of compression shut offs, I have seen to many failures/leaks, but I have used them. When I use then in an unexposed area, under a vanity, I leave plenty of pipe just for the reason your questioning.
Yeah, it's really bad when you see a plain old copper 90 and the pipe just hanging there. I'm guessing code requires the stub to be secured somehow, so if it's being inspected presumably one of those straps with the hole in it will be used, and MAYBE the pipe will actually be soldered to it. But that's still nowhere near as secure as a drop-eared ell, fastened to blocking.
And that's even before you get to the maintenance issue.