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06-26-2020, 12:03 PM
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#1
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Junior Member
Join Date: Jun 2020
Posts: 2
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Fresh water tank will not drain.
I have a new 5th wheel (Brookstone) and find the fresh water tank will not drain when I open the valves. If I turn on the pump water flows but without the pump the water will not drain. I am wondering if there is a venting issue?? Thoughts?
Thanks
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06-26-2020, 12:16 PM
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#2
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Senior Member
Join Date: May 2017
Posts: 5,400
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My first thought would be the Overflow tube...which also works as a vent on a lot of tanks is either clogged with something, pinched off somehow or the manufacturer really messed up and forgot about a vent.
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06-26-2020, 12:17 PM
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#3
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Senior Member
Join Date: Mar 2017
Posts: 2,169
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Do you have a gravity fill? (Same as overflow tube)
If so, try taking a piece of cut off hose and pushing it up against the vent as hard as you can to seal it and then blowing in the other end. You should be able to blow easily into the tank. If you have resistance, it's likely blocked with water.. keep blowing. It'll clear.
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06-26-2020, 12:25 PM
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#4
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Senior Member
Join Date: Aug 2013
Posts: 7,855
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Dirt dobbers?
__________________
2017 Puma 297RLSS
2005 Ram 2500 4X4 diesel SMOKER!!
I love puns, irony and tasteless jokes...
born in Texas.... live in Arkansas 
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06-26-2020, 12:26 PM
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#5
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Senior Member
Join Date: Feb 2018
Location: TEXAS
Posts: 3,328
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Quote:
Originally Posted by SNFR666
I have a new 5th wheel (Brookstone) and find the fresh water tank will not drain when I open the valves. If I turn on the pump water flows but without the pump the water will not drain. I am wondering if there is a venting issue?? Thoughts?
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I'm trying to figure out how running the water pump helps drain the tanks. 
Which 'valves' are you using to empty the tank? There are red and blue ones that drain the faucets, then you have a separate valve that drains the fresh water tank. Usually emptying the tank is a matter of opening the valve and gravity does the work of letting the water out.
__________________
2015 Dynamax REV 24TB class C
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06-26-2020, 12:30 PM
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#6
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Senior Member
Join Date: May 2017
Posts: 5,400
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Quote:
Originally Posted by Reverse_snowbird
I'm trying to figure out how running the water pump helps drain the tanks.
Which 'valves' are you using to empty the tank? There are red and blue ones that drain the faucets, then you have a separate valve that drains the fresh water tank. Usually emptying the tank is a matter of opening the valve and gravity does the work of letting the water out. |
Pretty much how our Cherokee was. Red and Blue were "Low Point" drains and the FW tank had a valve of it's own.
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06-27-2020, 01:03 PM
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#7
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Junior Member
Join Date: Dec 2014
Posts: 19
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To me it almost sounds like the OP is trying to drain the tank through the faucets, anyone else get this impression?
__________________
Tim and Shannon
and Sawyer The Camping Cat
2007 Chevy Silverado CC SB Z71
2013 Rockwood Ultralite 2604WS
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06-27-2020, 01:06 PM
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#8
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Site Team
Join Date: Oct 2014
Posts: 12,189
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If you are draining it through the red or blue PEX lines that is not the water tank drain.
__________________
2015 Freedom Express 248RBS
TV 2015 Silverado HD2500 Duramax
TST Tire Monitors
Honda 2000I + Companion
2 100W solar panels
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06-27-2020, 01:20 PM
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#9
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Senior Member
Join Date: Feb 2018
Location: TEXAS
Posts: 3,328
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Quote:
Originally Posted by EnjoyingLife
To me it almost sounds like the OP is trying to drain the tank through the faucets, anyone else get this impression?
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Yup. That's why I was
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2015 Dynamax REV 24TB class C
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06-27-2020, 02:31 PM
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#10
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Just as confused as you
Join Date: Aug 2013
Location: south central Wisconsin
Posts: 4,680
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There should be a sticker on the side or in the water bay of the rv telling you where the fresh water drain is. On mine with the bedroom slide extended I have to crawl under to reach the drain.
__________________
Richard & Jill
2014 Flagstaff 832IKBS Classic Super Lite
2018 Silverado 1500 Crew Cab Z71 4WD All Star Edition
Camping since 1989
Car Shredder Op/Tech, Scrap Metal Recycling - retired
I deserve hazard pay when camping with my relatives.
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06-27-2020, 05:02 PM
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#11
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Tundra 2014
Join Date: May 2018
Location: Texas
Posts: 945
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FWT
A single drain valve under the "Fresh Water Drain" sticker. Pump would only help if using Low Water drains, it will not pressurize fresh water tank.
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06-28-2020, 06:18 AM
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#12
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Senior Member
Join Date: Feb 2013
Location: Brownsville
Posts: 1,054
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If you have a wet dry vac take and make something to fit the end of the hose and tank and see if it will suck it out or take the other end and blow air into it
__________________
2019 Flagstaff 26 RBWS
2015 GMC Sierra 1500
2019 camp 17 nites. Bill,Alley and are two kids Sierra,Ivy. 2020 camp 9 nites
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