During the installation of the RNC from a wet-niche fixture to the raised j-box (see my previous post), it occurred to me that much of the pipe will be below the water line. Can any precautions can be made to prevent water from leaking from the glue joints into the ground? I have used "medium body" cement to thoroughly fill the voids in the joints, but still wonder about leaks.
[This message has been edited by Redsy (edited 11-10-2003).]
May not help much Redsy,but I always use glue on both the pipe and the coupling. There's a lot less chance of a void in the joint that way. Another thing I do sometimes is use a primer/cleaner on the conduit before I apply the glue. I'm sure someone will say primer isn't listed for use with conduit,but I've never seen it cause a problem,and it sure makes a heckuva joint.
I may be missing some thing, but it seems that with a wet-niche, water will rise up out the back of the niche and into the conduit until it reaches the pool water level. I am concerned that any compromised joints in this run might develop a slow leak and the pool water will escape, thereby lowering the pool water level.
Re: Preventing PVC leak.#86553 11/12/0312:12 AM11/12/0312:12 AM
Remember, that other PVC is used for pressurized water lines all the time with no special provisions. Just be careful to do a good job on the joints and I think more will evaporate out the top of the pipe than will ever leak underground. I don't do a lot of PVC but I aways coat both halves with glue and give a good twist when I slide them together.
Re: Preventing PVC leak.#86554 11/12/0306:44 AM11/12/0306:44 AM