You ole timers will love this one especially from me :)

International Code Council…

504.6 Requirements for discharge piping. The discharge
piping serving a pressure relief valve, temperature relief valve or combination thereof shall:

  1. Not be directly connected to the drainage system.
  2. Discharge through an air gap located in the same room as the water heater.
  3. Not be smaller than the diameter of the outlet of the valve served and shall discharge full size to the air gap.
  4. Serve a single relief device and shall not connect to pip- ing serving any other relief device or equipment.
  5. Discharge to the floor, to an indirect waste receptor or to the outdoors. Where discharging to the outdoors in areas subject to freezing, discharge piping shall be first piped to an indirect waste receptor through an air gap located in a conditioned area.
  6. Discharge in a manner that does not cause personal injury or structural damage.
  7. Discharge to a termination point that is readily observable by the building occupants.
  8. Not be trapped.
  9. Be installed so as to flow by gravity.
  10. Not terminate more than 6 inches (152 mm) above the floor or waste receptor.
  11. Not have a threaded connection at the end of such pip- ing.
  12. Not have valves or tee fittings.
  13. Be constructed of those materials listed in Section
    605.4 or materials tested, rated and approved for such use in accordance with ASME A112.4.1.

Yea Mike show her that video Roy just posted that should convince her :shock:

I see a 1/2" TPRV there. Meeker gets another trophy.:stuck_out_tongue:

You Do!

Yep, the tank has a 3/4" x 1/2" reducing bushing. The valve is 1/2" and the discharge pipe is 1/2"…I’ts A-OK.

Since you put it what way…:wink:

There is nothing wrong with the way that relief valve is plumbed. You can reduce with a bushing from the tank 3/4" to 1/2" - You can’t reduce on the output side of the relief valve- If the valve is 3/4" than the out put must be 3/4". Also either way they aren’t allowed to run up hill.

Jared can you please post where you found that information as no one seems to agree I’d like to know for sure

http://publicecodes.cyberregs.com/icod/ipc/2009/icod_ipc_2009_5_sec004.htm

Not be smaller than the diameter of the outlet of the valve served.

The outlet is the key word here.

Someone tell me I ain’t seeing a reducing fitting?

PRV..jpg

That is where I’m stuck Roy. So I guess we’re not going to come to unanimous Decision. The discharge pipe is smaller than that outlet opening on the valve how is that okay It is that way to the very end of the pipe it is that way to the very into the plate

This we know for sure…



It don’t matter about the rest of the PRV assembly. If one piece is incorrect that is all we need to know…And it is.

Please anybody else who has not commented feel free to give your opinion the more the merrier I would like this lady to be positive but now I think this will confuse her more I would like this lady to be positive but now I think this will confuse her more

I’m done…Its reduced and that alone is incorrect.

The outlet on the valve is considerable smaller than the NPT opening of the discharge side. That valve has a NPT of 1/2". The discharge pipe has a 1/2" male adapter on it. What else do you need to know about this…It’s OK.

I guess I am missing something if there was no pipe connected to the relief valve there would be in about an inch hole there It is reduced to about a half inch how is that correct

NO…It goes by the NPT size. Do you also flag a 3/4" TPR with a 3/4" male adapter on the discharge line?

https://fbcdn-sphotos-g-a.akamaihd.net/hphotos-ak-xpa1/v/t1.0-9/544913_10204235629823831_2442228029925203089_n.jpg?oh=76f9daae1b9499f5b7a8fbc9c0bfa383&oe=54EFDE14&gda=1425586092_cc8b5b6de6145778275624c4704d9798

If 1 is so much bigger of an opening than 2 how is that NOT REDUCED and correct.