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10-09-2016, 05:25 PM
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#1
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2 Rivet Member
1973 31' Sovereign
Atlanta
, Georgia
Join Date: Feb 2016
Posts: 36
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Petcock drain pouring water
Hey guys, so I just put water in my 73 sovereign for the first time. The pump and everything seems to be working with no visible leaks, however, the water heater has a Petcock style drain valve that is just free flowing water. How do I troubledhoot this? None of the sinks will pressurize enough to work. I'm assuming because of the water issue.
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10-09-2016, 06:01 PM
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#2
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Rivet Master
2002 30' Classic S/O
Fleming Island
, Florida
Join Date: Nov 2013
Posts: 4,672
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A picture would help, but if it is truly the water heater drain valve, it should be closed. If you have never used the water system it may have been left open from winterizing. If it is closed and water is coming out, it is bad and should be replaced.
The water heater in my trailer does not have a drain valve, but there is a hot water line low point drain close to the heater. Typically the heater itself is drained by removing a plastic plug, but the older trailers may be different.
If you are trying to pressurize the water system, any valves that are open to the air should be closed.
Al
__________________
“You cannot reason someone out of a position they have not been reasoned into"
Al, K5TAN and Missy, N4RGO WBCCI 1322
2002 Classic 30 Slideout -S/OS #004
2013 Dodge 2500 Laramie 4x4 Megacab Cummins
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10-09-2016, 06:30 PM
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#3
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2 Rivet Member
1973 31' Sovereign
Atlanta
, Georgia
Join Date: Feb 2016
Posts: 36
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I can't locate a valve that may be causing it. I've attached some pictures. The Petcock valve is where it is draining. There is also a red light illuminated.
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10-09-2016, 06:34 PM
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#4
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Rivet Master
2002 30' Classic S/O
Fleming Island
, Florida
Join Date: Nov 2013
Posts: 4,672
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I guess you replaced the picture. If you are talking about the valve at the top of the picture with the red handle on it, that is your pressure relief valve. It looks like the handle is in the closed position. If so, the valve is bad. Unscrew it, take it to an RV parts place, Lowes or Home Depot and get another one just like it.
Al
__________________
“You cannot reason someone out of a position they have not been reasoned into"
Al, K5TAN and Missy, N4RGO WBCCI 1322
2002 Classic 30 Slideout -S/OS #004
2013 Dodge 2500 Laramie 4x4 Megacab Cummins
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10-09-2016, 06:45 PM
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#5
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Rivet Master
2002 30' Classic S/O
Fleming Island
, Florida
Join Date: Nov 2013
Posts: 4,672
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The valve is actually called a Temperature and Pressure Relief (TPR) Valve.
__________________
“You cannot reason someone out of a position they have not been reasoned into"
Al, K5TAN and Missy, N4RGO WBCCI 1322
2002 Classic 30 Slideout -S/OS #004
2013 Dodge 2500 Laramie 4x4 Megacab Cummins
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10-09-2016, 06:46 PM
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#6
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Rivet Master
2002 30' Classic S/O
Fleming Island
, Florida
Join Date: Nov 2013
Posts: 4,672
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Also, you don't want your water heater running when it is dry. That will destroy it. Since you have water coming out of the valve, it is probably OK. The red light should come on when you first turn the heater on and then go out. If it comes back on, the heater didn't light. That will be your next problem to solve.
Al
__________________
“You cannot reason someone out of a position they have not been reasoned into"
Al, K5TAN and Missy, N4RGO WBCCI 1322
2002 Classic 30 Slideout -S/OS #004
2013 Dodge 2500 Laramie 4x4 Megacab Cummins
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10-10-2016, 07:41 AM
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#7
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2 Rivet Member
1973 31' Sovereign
Atlanta
, Georgia
Join Date: Feb 2016
Posts: 36
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I don't know how to turn it off?? I didn't light it or flip any switches etc. I was just adding the water to the system and didn't mess with it at all. Is it always on when the power is plugged into the trailer?? Now I'm worried...
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10-10-2016, 12:51 PM
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#8
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4 Rivet Member
1977 31' Sovereign
Lynnwood
, Washington
Join Date: Jan 2015
Posts: 311
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Your photo is showing us a pressure relief valve. If it's leaking, you need to replace it. Just unscrew it. For wrench greater clearance, remove exhaust outlet.
The red light lets you know the electric water heater element is heating. But because of the water leak, it's heating all the time - cold water is entering water heater to replace hot water that's leaking out. You don't want the element heating all the time. And you don't want the element heating when there's no water in your water heater.
Before worrying about anything else, unplug shore power and replace pressure relief valve. Refill water heater; pressurize water system; plug in shore power; then go from there.
Tom
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10-10-2016, 01:00 PM
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#9
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Rivet Master
2006 19' Safari SE
Tucson
, Arizona
Join Date: Jun 2007
Posts: 4,627
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Do you even have a dual water heater (gas AND electricity) in a rig of that age? I wouldn't expect that ... unless it has been replaced/upgraded at some point. (We have a 2006 and it did not come with a electric heating option...that's something relatively recent.)
If it's a gas water heater, there is no electric heating element involved, but rather a gas heating element. And there may not even be an electric ignition in a 70s rig ... not sure about that, but someone else will know., and hopefully they will chime in.
__________________
TB & Greg and Abbey Schnauzer
AirForums #21900
PastPrez, 4CU/WBCCI
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10-10-2016, 01:58 PM
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#10
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Rivet Master
2014 20' Flying Cloud
Sag Harbor
, New York
Join Date: Jun 2015
Posts: 17,523
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Enlarging the photo is Post #3 reveals that the water heater is an older propane-only model; the instruction label, and gas valve with red push button, confirm this IMO. The word "OFF" is facing the camera on the red circular valve knob.
http://www.airforums.com/forums/atta...3&d=1476059530
Replacement of the entire heater is recommended, by a licensed RV shop or plumber.
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10-10-2016, 02:43 PM
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#11
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Rivet Master
1971 25' Tradewind
1993 34' Excella
Currently Looking...
Estancia
, New Mexico
Join Date: Feb 2005
Posts: 7,743
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Being a 73 it is probably manual lighting. No switches, no red lights. If it have on, off, pilot settings on the valve body it is manual But on the tpr valve if flipping the metal lever does not close the valve, it's busted. If the heater has a bypass valve it will turn off water to the heater. If it doesn't it's a good idea.
__________________
Sail on silver girl. Sail on by. Your time has come to shine.
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10-10-2016, 03:01 PM
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#12
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3 Rivet Member
1973 31' Excella 500
Vicksburg
, Mississippi
Join Date: Jul 2016
Posts: 164
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I would temporarily plug the relief valve to check the tank for leaks before you replace the valve. No sense spending time and money changing the valve only to find that the tank is rusted or split from a freeze.
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