I'm only seeing 2 bypass valves on my heater, not 3. There is a black valve for the water inlet that I turned 90° and there is also a white valve at the intersection of the bypass tube and the hot water tube. I assume both of these need turned? I'm used to seeing 3 valves: 1 each for cold and hot water and 1 in the middle of the bypass tube.
The 2 valve system is pretty common. The top valve isolates the "hot water output" from the tank and the bottom one rotates the direction of cold water flow from the tank to the pipes; bypassing the heater tank.
You isolated correctly.
FYI - there is also a 1 valve system that uses a one way check valve instead of the white outflow shutoff valve.
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Lou & Freya the wonder dog
2008 GMC Sierra 3000HD Allison Duramax
2019 Flagstaff 8529FL
The 2 valve system is pretty common. The top valve isolates the "hot water output" from the tank and the bottom one rotates the direction of cold water flow from the tank to the pipes; bypassing the heater tank.
You isolated correctly.
FYI - there is also a 1 valve system that uses a one way check valve instead of the white outflow shutoff valve.
Thanks Herk7769. Now I feel comfortable pumping the antifreeze through. I have not yet drained my heater (need to go purchase a 1 1/16 socket) but at least with it bypassed I can run the antifreeze through the trailer. Thanks again.
Thanks Herk7769. Now I feel comfortable pumping the antifreeze through. I have not yet drained my heater (need to go purchase a 1 1/16 socket) but at least with it bypassed I can run the antifreeze through the trailer. Thanks again.
Perfect; I am glad you know not to drain the water heater through the low point drains. All that crud at the bottom of the water heater is drawn into the cold water pipe and can then be pushed into your faucets and toilet valve when you put pink or fresh water back in.
Just watch your toes ...
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Lou & Freya the wonder dog
2008 GMC Sierra 3000HD Allison Duramax
2019 Flagstaff 8529FL
I've actually seen/heard of 4 different bypass setups. See attached.
Thank you. I have added that graphic to my library.
It is interesting that the "4th" valve arrangement does not use 4 manual valves; just another way of managing the closing off of the tank using 2 valves and a check valve (vice a 3rd manual valve) instead of the "T" valve and a check valve.
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Lou & Freya the wonder dog
2008 GMC Sierra 3000HD Allison Duramax
2019 Flagstaff 8529FL
My Suburban only has one T valve to reroute the incoming water to bypass the heater. There is a backflow preventer on the output side of the heater which prevents water from entering the heater from the output side.
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Gary and Donna
2005 Cardinal 33TS-LX
Trail Air pin box
Center Point suspension
2018 Ram Laramie 3500 6'4" box 2WD
Demco AutoSlide 18k
My Suburban only has one T valve to reroute the incoming water to bypass the heater. There is a backflow preventer on the output side of the heater which prevents water from entering the heater from the output side.
Yes, that is the "one valve" type.
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Lou & Freya the wonder dog
2008 GMC Sierra 3000HD Allison Duramax
2019 Flagstaff 8529FL
My Suburban only has one T valve to reroute the incoming water to bypass the heater. There is a backflow preventer on the output side of the heater which prevents water from entering the heater from the output side.
It's the setup on the far right side in my PDF in post #5.
Perfect; I am glad you know not to drain the water heater through the low point drains. All that crud at the bottom of the water heater is drawn into the cold water pipe and can then be pushed into your faucets and toilet valve when you put pink or fresh water back in.
And just as a reminder...like I found out a few weeks ago... be sure to relieve water pressure before removing anode rod. Had to go take a quick shower after that to get the calcium off of me.
2014 Evo 2850 "Woodstock"
2011 Toyota Tundra "Clifford"
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2014 Stealth Evo 2850- "Woodstock"
2011 Toyota Tundra Rock Crawler TRD 5.7- "Clifford"
2013 Honda Accord Coupe V6 w/Track Pack- "Julia"
Location: In a big child free home - except for me
Posts: 1,682
Quote:
Originally Posted by Herk7769
Yes, that is the "one valve" type.
mine on the Sundance is similar but it has a valve at the top which I forgot to close off and ended up getting my wife another pink shower... second in 2 yrs.
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TV 2018 Ford F250, hauling a 2018 KZ 331 TH 12 Sportster 5th wheel, packing a 2015 CF MOTO 800 U-Force SXS
mine on the Sundance is similar but it has a valve at the top which I forgot to close off and ended up getting my wife another pink shower... second in 2 yrs.
Location: In a big child free home - except for me
Posts: 1,682
Quote:
Originally Posted by youroo
Shower or "Wife"? Youroo!!
last year she got the first pink shower when the city water inlet back pressure valve failed and she was standing directly across from the inlet.
Almost 2 gallons of it fired out the line vs where it was supposed to go before I clued into why she was slapping the side of the trailer saying "Stop" for.
This time it was coming out the very loosely insert rod at the bottom. I actually just set it in there without more than a thread holding it.
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TV 2018 Ford F250, hauling a 2018 KZ 331 TH 12 Sportster 5th wheel, packing a 2015 CF MOTO 800 U-Force SXS