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06-11-2018, 09:03 AM
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#21
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Senior Member
Join Date: Jun 2012
Posts: 10,907
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Quote:
Originally Posted by JohnD10
But it won't drain out the crud floating on the top of the water in the heater...
And it won't release the air bubbles, either.
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But it WILL release the pressure, which is what you're trying to accomplish so the water doesn't spray out later. (Don't know what air bubbles or crud have to do with relieving the pressure. Pretty sure the PRV is below the surface of the water - faster pressure drop with water flow than with air flow, since water is incompressible.)
Quote:
Originally Posted by RacerRalph
Before you remove the anode, use the pressure relief valve to relieve the tank pressure. Guess how I learned about that step!!
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Of course, if you're removing the anode, the PRV is right there; no need to go inside to open a faucet.
__________________
1988 Coleman Sequoia - popup (1987-2009) - outlasted 3 Dodge Grand Caravans!
2012 Roo19 - hybrid (2012-2015)
2016 Mini Lite 2503S - tt (2015 - ???)
2011 Traverse LT, 3.6L, FWD
2009 Silverado 1500 Ext Cab, 5.3L, 4x4, 3.73
2016 Silverado 2500HD Dbl Cab, 6.0L 4x4, 4.10
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06-28-2018, 07:55 PM
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#22
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Junior Member
Join Date: Apr 2018
Posts: 2
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PRV
Does opening the PRV ruin the valve? My FIL told me not to crack mine as it would mess it up.
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06-28-2018, 08:59 PM
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#23
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Senior Member
Join Date: Jun 2012
Posts: 10,907
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Quote:
Originally Posted by Huskerfire
Does opening the PRV ruin the valve? My FIL told me not to crack mine as it would mess it up.
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They tell you to use it as necessary to restore the air bubble in the water heater. See page 20.
__________________
1988 Coleman Sequoia - popup (1987-2009) - outlasted 3 Dodge Grand Caravans!
2012 Roo19 - hybrid (2012-2015)
2016 Mini Lite 2503S - tt (2015 - ???)
2011 Traverse LT, 3.6L, FWD
2009 Silverado 1500 Ext Cab, 5.3L, 4x4, 3.73
2016 Silverado 2500HD Dbl Cab, 6.0L 4x4, 4.10
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06-28-2018, 09:49 PM
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#24
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Denver To Yuma In 90 Days
Join Date: Mar 2018
Location: Yuma, Arizona
Posts: 3,882
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Quote:
Originally Posted by Huskerfire
Does opening the PRV ruin the valve? My FIL told me not to crack mine as it would mess it up.
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It wouldn't be there if it wasn't meant to be used...
Not only do I use it to release the air bubbles, but also to release the crud that accumulates in the hot water tank, which generally floats to the top!
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06-28-2018, 10:56 PM
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#25
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Junior Member
Join Date: Apr 2018
Posts: 2
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PRV
I’m guessing he thought it was more of a pop off valve and wouldn’t reseal. Thanks for the reply’s. I’m new to the camper world.
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06-29-2018, 11:08 AM
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#26
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Moderator Emeritus
Join Date: Oct 2014
Posts: 1,024
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Yep I open up my valve to drain the tank after every trip. We’ve discovered the horrid rotten egg smell comes if we leave water in the fresh tank and water heater for even a few weeks in the summer between outings.
__________________
Rick & Karen
(Retired USAF, MSgt)
Monument, Colorado
8-year Travel Trailer RVers
2013 Forest River Rockwood Ultra-Lite 2904SS
2014 Toyota Tundra Maxcrew SR-5 TRD 4x4 (with Firestone airbags in the rear)
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06-29-2018, 11:16 AM
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#27
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Mod free 5er
Join Date: Mar 2008
Location: Concord, NC
Posts: 24,702
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Quote:
Originally Posted by JohnD10
It wouldn't be there if it wasn't meant to be used...
Not only do I use it to release the air bubbles, but also to release the crud that accumulates in the hot water tank, which generally floats to the top!
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Sorry to disagree, but most of the crud settles to the bottom and can be removed by removing the anode on a Suburban or the plastic plug on an Atwood.
__________________
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06-29-2018, 11:48 AM
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#28
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Denver To Yuma In 90 Days
Join Date: Mar 2018
Location: Yuma, Arizona
Posts: 3,882
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Quote:
Originally Posted by OldCoot
Sorry to disagree, but most of the crud settles to the bottom and can be removed by removing the anode on a Suburban or the plastic plug on an Atwood.
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Yes, but some of it does go to the top and when you are long-terming in your RV this is one way to bleed off some of the crud without having to wait for the water heater to cool down completely to drain it.
It does work!
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