In Reply to: Re: more water heater saga, Tom G [Profile/Gallery] , Wed, 16 Jul 2014 07:05:20

Before stating that code doesn't allow plastic pipe, you might want to double check.
CPVC (not PVC) is allowed per newer commercial codes, I'd be surprised if most residential codes do not now allow it.
The typical residential water heater will have a dedicated screw fitting for the T&P relief valve at the top of the tank on the side.
The last heater I bought (couple of years ago) included a pre-formed/cut elastomeric insulation cover for this valve.
The relief pipe ideally would be routed all the way to a floor drain or sump basin, but really it just needs to terminate so that it wouldn't create a hazard to someone standing near the heater. A foot above the floor will suffice. If barefoot, well...
I would not hesitate to use plastic for this pipe, even if some local code didn't allow CPVC for domestic hot water. Granted, if someone were to break the plastic pipe off, and then discharge (either by testing, failure of the valve or overheating of the tank) and burn themselves, you could be liable. The pipe would not fail by normal use.
Ed
2007 9-5 Aero SC [60th]
2004 9-3 Aero
2005 9-5 Aero
2005 9-5 Arc
2002 9-5 Aero SW (taken out by Bambi)
1999 9-5 SE(6) SW (brief interim between the '02 and the '07)
1999 9-5 SE(4) (taken out by daughter on icy road)

• more water heater saga, Dean, Tue, 15 Jul 2014 14:27:56
  • What brand?, EricG, Wed, 16 Jul 2014 08:37:15
    • If electric..., ELaw , Thu, 17 Jul 2014 04:38:33
    • Re: What brand?, Dean, Wed, 16 Jul 2014 13:39:13
      • "Value Engineered", JerseySaab , Thu, 17 Jul 2014 05:14:01
        • Re: "Value Engineered", Dean, Thu, 17 Jul 2014 10:18:12
      • Is it worth trying to replace the anode?, Bill Homer , Wed, 16 Jul 2014 21:14:07
        • This Old House thinks so., EricG, Sat, 19 Jul 2014 03:07:55
          • Re: This Old House thinks so., Dean, Sat, 19 Jul 2014 09:00:37
        • Re: Is it worth trying to replace the anode?, Mark from Toronto, Fri, 18 Jul 2014 20:58:43
          • Re: Is it worth trying to replace the anode?, Dean, Sat, 19 Jul 2014 09:02:28
            • Yeah, that's what I'm worried about, Bill Homer , Sat, 19 Jul 2014 11:10:21
              • Try the impact wrench..., Mark from Toronto, Mon, 21 Jul 2014 21:08:23
      • Re: What brand?, EricG, Wed, 16 Jul 2014 20:11:43
        • Re: What brand?, Dean, Thu, 17 Jul 2014 10:11:50
  • Re: more water heater saga, Tom G , Wed, 16 Jul 2014 07:05:20
    • plastic pipe and building codes, AeroEd, Wed, 16 Jul 2014 09:25:05 <-- Viewing This Message
  • Re: more water heater saga, Bill Homer , Tue, 15 Jul 2014 15:46:35
    • I think Dean is using it for only Emergency vent, MI-Roger , Wed, 16 Jul 2014 11:17:42
      • Re: I think Dean is using it for only Emergency vent, Bill Homer , Wed, 16 Jul 2014 21:03:46
        • no, you're mixing things, AeroEd, Thu, 17 Jul 2014 09:32:52
        • No Romex?!?, MI-Roger , Thu, 17 Jul 2014 03:16:00
          • Re: No Romex?!?, Dean, Thu, 17 Jul 2014 10:20:48
          • Chicago is nuts, ELaw , Thu, 17 Jul 2014 04:30:13
            • Re: Chicago is nuts - maybe not, Bill Homer , Thu, 17 Jul 2014 07:38:54
              • Re: Chicago is nuts - maybe not, Snowmobile , Thu, 17 Jul 2014 14:08:41
                • Re: Chicago is nuts - maybe not, Bill Homer , Thu, 17 Jul 2014 14:38:26
                  • were they commercial grade?, Snowmobile , Fri, 18 Jul 2014 06:18:01
                    • Re: were they commercial grade?, Bill Homer , Fri, 18 Jul 2014 15:37:22
                      • Cheap goods, Johne726, Mon, 10 Aug 2015 23:14:31
                      • Cheap goods, Johnk96, Mon, 10 Aug 2015 23:14:24

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