Hi I have a Attwood w/h and wanting to replace it when I get ready for the season. The plastic plug is starting to round off like they normal do, my question I see these at parts stores and they want bit more money than I think. Are these plugs different in the plastic they used, can I go to Lowe's or ?? and just get a plug in the same size?Thanks

They use a1/2" nylon plug due to the drain hole threads being aluminum.Water normal temp is 140*F and if normal t-stat doesn't shut down heating then temp will rise to 180*F before ECO t-stat (hi temp) shuts heating down.The nylon plug has max temp rating up to 450*FPVC max temp rating of 140*F but for threaded material it is rated to 110*FCPVC max temp rating of 200*F but for threaded material it is rated to 150*FWhich plug do you want in your Water Heater?

Okay...I understand being on a budget, but they are only $4.00. Is it worth it to use the wrong component for $4.00.Here are two for $8 on Amazon.Drain Plug

Get a (brass) wingnut. Most RV stores have them(with thread adapters). Use Teflon tape on the threads.This way you never have to "remove" anything. Just "righty-tighty...lefty losey" and it drains just fine.

scout dad wrote:Hi I have a Attwood w/h and wanting to replace it when I get ready for the season. The plastic plug is starting to round off like they normal do, my question I see these at parts stores and they want bit more money than I think. Are these plugs different in the plastic they used, can I go to Lowe's or ?? and just get a plug in the same size?ThanksGo to any camping store and/or dealership that has a supply store within. They only cost a couple of bucks AND they are the appropriate plug for RV water heaters. I keep 2 extra packages, 4 plugs in all on board in the MH all the time. If you winterize your RV those plugs do NOT last very long and should be replaced often at the first sign of wear to prevent leaks.

Old-Biscuit wrote:They use a1/2" nylon plug due to the drain hole threads being aluminum.Water normal temp is 140*F and if normal t-stat doesn't shut down heating then temp will rise to 180*F before ECO t-stat (hi temp) shuts heating down.The nylon plug has max temp rating up to 450*FPVC max temp rating of 140*F but for threaded material it is rated to 110*FCPVC max temp rating of 200*F but for threaded material it is rated to 150*FWhich plug do you want in your Water Heater?Another good type is from "ACETAL" that has a temp rating of 180 IIRC and is colored grey and fittings out of that are often found at trailer supply stores I think. That is what I used to attach my WH drain line to the tank and after about 5 to 6 years all is still O.K.I think some of the special polyethelene plugs are also high temp, but probably a lot harder to find.Larry

water heater drain plug | Good Sam Community

jerseyjim
Explorer
Feb 20, 2016
Get a (brass) wingnut. Most RV stores have them(with thread adapters). Use Teflon tape on the threads.

This way you never have to "remove" anything. Just "righty-tighty...lefty losey" and it drains just fine.
DSDP_Don
Explorer
Feb 20, 2016
Okay...I understand being on a budget, but they are only $4.00. Is it worth it to use the wrong component for $4.00.

Here are two for $8 on Amazon.

Drain Plug
Old-Biscuit
Explorer III
Feb 20, 2016
They use a1/2" nylon plug due to the drain hole threads being aluminum.
Water normal temp is 140*F and if normal t-stat doesn't shut down heating then temp will rise to 180*F before ECO t-stat (hi temp) shuts heating down.

The nylon plug has max temp rating up to 450*F

PVC max temp rating of 140*F but for threaded material it is rated to 110*F
CPVC max temp rating of 200*F but for threaded material it is rated to 150*F

Which plug do you want in your Water Heater?

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