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HeyBub HeyBub is offline
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Default T&P relief valve - nowhere to drain?

kjpro @ usenet.com wrote:
"HeyBub" wrote in message
...
kjpro @ usenet.com wrote:


Freezing temps and seeing a drip really don't matter


Yeah, so run them damn things outside in freezing weather... Idiot!


Obviously you have no conception of the purpose of a temperature and
pressure relief valve.



You obviously don't know anything about them or the codes that
pertain to them.


Sigh:

"IRC P2803.6.1 Requirements of discharge pipe. The outlet of a pressure
relief valve, temperature relief valve or combination thereof, shall not be
directly connected to the drainage system. The discharge from the relief
valve shall be piped full size separately to the floor, to the outside of
the building or to an indirect waste receptor located inside the building."

Here's why:

"People don't like to test their T&Ps. But then, we don't think it's so much
fun to wake up in the hospital, or to patch a big hole in the roof, either.
When water heaters explode, it's catastrophic. People are injured or die;
buildings are severely damaged. Test your T&Ps! And one more thing: T&P
drain lines should go down and out. Never up. If the valve opens, water will
pool there and corrode it shut. Or freeze in the line in colder climes.
We've seen lines plumbed uphill so many times we've lost count. But there
SHOULD be a drain line, usually to within about six inches of the floor, or
plumbed outside. That's code around here [California]. It's to prevent you
from being scalded if the valve should open while you're standing next to
it."

It is the White Man's Burden to enlighten the benighted. I'm glad I was able
to assist you.