drain
A friend of mine is asking me about severity of the problem she has with the drain pipe under her kitchen faucet. The pipe was installed horizontally, but now for some reason (I suspect the main drain pipe behind the wall was moved) it is at wrong angle, down from the horizontal by several centimeters.
What are the consequences of keeping it this way for a prolonged period of time?
P.S. Sorry about my English, please tell me in comments if there are any unclear/wrong wording. Thanks.
Why don't you move the end a little further uphill and empty the pipe into some kind of culvert drain or splash block that slopes down to the curb?
Or you could use a pipe fixture like this:
There's a brand name behind that thing (Mitered Drain), and I'm not sure there are identical alternatives, so I'll go ahead and identify the brand. I'm not their spokesman. They just have the solution that's identical to what came into my head when I saw your question.
Or maybe you could transition to a rectangular section of pipe:
If you only notice it draining when the air conditioning cooling unit is on, my guess would be it is the condensate drain for the evaporator coil.
Best Answer
The low point is where semi-solid materials (sludge, in our vernacular) will collect and ultimately clog the sink. If your friend is willing to clean the pipe out regularly, then it's probably okay.
As you probably know, the solution is to fix the plumbing and let water run downhill.
(Edited to respond to the comment/question about possible leakage.)
I'd say that the quality of the connection and the likelihood of it leaking is a different matter. A little bit of backed up water won't create a leak. However, if the plumbing was done poorly in the first place (and it looks like it was), then it might leak. While water is running, try to gently move some of the parts and see if there's a leak. If there is, the system needs to be repaired.