On Mon, 7 Mar 2011 03:37:29 -0800 (PST), Mikepier
wrote:

My water heater has a 3/4" copper pipe from the T&P valve extending
down about 8" from the floor. I have a sump pit about 5 feet to the
left. I wanted to somehow route this discharge pipe into the pit in
case somethig happens.
Obviously it would be easy if I used some kind of flexible hose rated
for high temps. Is there anything wrong in doing it this way? How is
it usally done?

I'm the opposite of an authority, but I put a pan to catch leaks under
the WH and ran plastic pipe from it to the sump. 2-inch or whatever
matched the hole in it. I put more of the empty area of the pan
below the T&P valve, and now that you mention it, I think I had to put
the biggest empty part to the left of the valve, and I pointed the T&P
pipe a little to the left, hoping to catch more of what came out.
(I noticed a couple weeks ago it was pointing to the left but I
coudln't remember why until now. Thanks.)

I've never had water come out of that valve afaik.

Oh, yeah, with the last WH, I had a 2 inch piece of vinyl hose running
fitting loosely on the bottom of the pipe and resting in the pan. I
could have gotten a hose that would fit better. I don't know why I
didn't do that this time.

Why does it have to be high temp. What temp does it release water at?
Oh, 210, but clear vinyl seems to be 150 whether braided or not, or
maybe 80°C, which is 176F.

Silicone tubing goes up to 500F. I wonder if you can get a piece of
that.