PVC & Cement

[DRRosen3]

So...I'm building the plumbing for my overflow into sump... The PVC fittings (tubing and elbows)... Do I NEED to cement them together since the water isn't under pressure and it's just a drain system?

 

[Wills612]

Yes you need to primer and cement them.

 

[sleepydoc]

Have you ever looked under your sink to see what happens when you don't properly tighten or seal the pipes for the drain there?

 

[DRRosen3]

Have you ever looked under your sink to see what happens when you don't properly tighten or seal the pipes for the drain there?

Never had that problem; but that's probably because I've never done my own plumbing.

Thanks for the info though guys. Plumbings all done, and I ran a water test...no leaks!

 

[planedoc]

I use treaded bulkhead fittings on all my tanks. I glue the threaded adapter to a piece of pipe going from the bottom of the tank up. All other pieces I do not glue. It's makes it easy to do annual cleaning. It's important to have the treaded adapter glued because it's almost impossible to reach down and unscrew it.
I think any non pressurized drain line that is submerged does not require glue. Except that threaded adapter.

 

[uncleof6]

Yes you need to primer and cement them.

Primer is not needed at all for our uses, and it is only required per codes in the plumbing trade for 4" pipe or larger. It is much touted, but is pretty useless when using new pipe, in the diameters we use. It is simply a waste of time and money—and does not improve the strength of the bond, when proper gluing technique is used. Even if proper gluing technique is not used, primer will not improve the strength of the bond. In all cases the key to success is proper gluing techniques; all the carrying on over primer was instigated by the glue manufacturers because they could not sell any primer...funny how manufacturers manipulate things—so you "have" to buy their product.

 

[James77]

So...I'm building the plumbing for my overflow into sump... The PVC fittings (tubing and elbows)... Do I NEED to cement them together since the water isn't under pressure and it's just a drain system?

No, you do not need to. But there is always going to be the chance of a section disconnecting. You will have salt creep at the joints as well.

You can use Teflon tape to help add seal to a non glued joint. Why not glue though? PVC is so cheap.

 

[James77]

...funny how manufacturers manipulate things—so you "have" to buy their product.

I think they also make the primer easier to knock over...in my case at least. What a stinky fast mess that is

 

[uncleof6]

Fourth law of thermodynamics at work...