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06-16-2015, 09:49 AM
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#1
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Senior Member
Join Date: May 2015
Posts: 143
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Fresh Water Tank Question
I have a fresh water tank in my 2014 Fleetwood Bounder that needs some reworking of the drain valves. The pipes are PVC and where it attaches it uses a threaded connector like they thread into the tank. There's a ring of some sort of solvent on all 4 holes of the tank but I cannot figure out if they are glued in or screwed in. Does anyone know what the common practice is?
I will post a picture shortly.
__________________
Craig and Jessica | RV Rookies | 2014 Fleetwood Bounder 35K| Tampa, FL
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06-16-2015, 09:53 AM
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#2
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Senior Member
Join Date: May 2015
Posts: 143
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I need to raise my overflow up to not dump the first two inches of the tank.
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Craig and Jessica | RV Rookies | 2014 Fleetwood Bounder 35K| Tampa, FL
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06-16-2015, 10:13 AM
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#3
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Senior Member
Join Date: Dec 2009
Location: Out there, somewhere
Posts: 9,938
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Quote:
Originally Posted by Car54
Attachment 97413
I need to raise my overflow up to not dump the first two inches of the tank.
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Car 54,
Well Sir, if I may, I'd like to make a suggestion to your issue. If that large, what looks like 2", section coming out of the upper section of the tank, is the over flow, here's a thought. I cannot see all the piping, joints and related fittings but, if you have any of the piping that's long enough, then cut it at the most distant end and, glue on a 45 degree angle and aim it up. then, attach a small piece of the piping to that.
That piece would be just long enough to fit and be glued in to the "up" facing part of the 45 and then, add another 45 to that. That will effectively raise your overflow height. Then, simply continue the piping with turns, 45s, 90s etc. to end up where you want it to be. In effect, you're making an upside down, "trap". But, it won't TRAP anything, it will flow, if and when it needs to.
I'm no plumbing engineer but, I would think you could do all of that even with a reducer and, making all the bends with smaller pipe, as in 1" etc.
After all, you're only concerned about overflow. If it (the water volume) needs to have a place to go, it will certainly flow nicely out of a 1" over flow just as well as a 2".
By doing it this way, you wont' mess with the integrity of the original joints where the plumbing meets the tank. Just some thoughts here. Good luck.
Scott
__________________
2004 ITASCA HORIZON 36GD, 2011 GMC Sierra 1500 4x4 Toad '20 Honda NC750X DCT
2018 Goldwing Tour DCT Airbag
Retired-29.5 yrs, SDFD, Ham - KI6OND
Me, Karla and the Heidi character, (mini Schnauzer)!
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06-16-2015, 10:52 AM
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#4
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Senior Member
Join Date: May 2015
Posts: 143
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Quote:
Originally Posted by FIRE UP
Car 54,
Well Sir, if I may, I'd like to make a suggestion to your issue. If that large, what looks like 2", section coming out of the upper section of the tank, is the over flow, here's a thought. I cannot see all the piping, joints and related fittings but, if you have any of the piping that's long enough, then cut it at the most distant end and, glue on a 45 degree angle and aim it up. then, attach a small piece of the piping to that.
That piece would be just long enough to fit and be glued in to the "up" facing part of the 45 and then, add another 45 to that. That will effectively raise your overflow height. Then, simply continue the piping with turns, 45s, 90s etc. to end up where you want it to be. In effect, you're making an upside down, "trap". But, it won't TRAP anything, it will flow, if and when it needs to.
I'm no plumbing engineer but, I would think you could do all of that even with a reducer and, making all the bends with smaller pipe, as in 1" etc.
After all, you're only concerned about overflow. If it (the water volume) needs to have a place to go, it will certainly flow nicely out of a 1" over flow just as well as a 2".
By doing it this way, you wont' mess with the integrity of the original joints where the plumbing meets the tank. Just some thoughts here. Good luck.
Scott
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So like a loop? All of that plumbing is 1". I'd be happy to cut the mid pipe and refab something but I'm concerned that the fittings in the tank are glued in and there's not much room on the horizontal pieces to fit new parts.
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06-16-2015, 11:33 AM
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#5
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"Formerly Diplomat Don"
Newmar Owners Club
Join Date: Apr 2005
Location: Moorpark, Ca.
Posts: 24,041
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"Car54".....maybe your plumbing is confusing us....that corrugated piece should be your overflow tube. All you need to do is find some room to add some more pipe to it and lifter it higher than the tank and then curve it back down. My tank was just like yours and used that same corrugated tubing. I went to Lowes, bought the same stuff and installed a piece of plastic pipe between the old corrugated stuff and the new stuff (fitting). I looped the new corrugated extension high into the corner of the bay and then angled it back down and out the hole it was designed to drain thru. This will solve your issue.
__________________
Don & Mary
2019 Newmar Dutch Star 4018 (Freightliner)
2019 Ford Raptor
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06-16-2015, 11:41 AM
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#6
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Senior Member
Join Date: May 2015
Posts: 143
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The corrugated portion is the gravity fill, the hose next to it is the vent.
The two 1" PVC pipes are the manual drain (bottom with the valve) and the overflow (top). The top has a check valve but is doesn't seem like it will hold anything back....at least not water at gravity. I'm trying to raise the upper PVC pipe so that it won't drain the tank down to the bottom of the PVC overflow.
Does that help?
Edit:
Rereading...why do I really need an overflow? If I fill too much it will come out of the gravity fill tube or the vent right?
Craig
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06-16-2015, 11:54 PM
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#7
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"Formerly Diplomat Don"
Newmar Owners Club
Join Date: Apr 2005
Location: Moorpark, Ca.
Posts: 24,041
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Okay.....It makes sense now. You're right, if you have a gravity fill, something a lot of new motor homes no longer have, just cut a section out of that vertical tube and cap both ends.
I've learned over the years that I NEVER walk away while filling the water tank. If you keep an eye on it, you won't have issues and if it does overflow, the gravity fill caps are not usually air tight.
__________________
Don & Mary
2019 Newmar Dutch Star 4018 (Freightliner)
2019 Ford Raptor
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06-17-2015, 08:43 PM
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#8
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Senior Member
Join Date: Aug 2001
Location: North America somewhere
Posts: 30,870
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Quote:
Originally Posted by Car54
Attachment 97413
I need to raise my overflow up to not dump the first two inches of the tank.
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Since you don't need the overflow, simply cut the vertical pipe and install an identical 1/4 turn ball valve, to match the drain valve.
__________________
2000 Winnebago Ultimate Freedom USQ40JD , ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA. " My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
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06-18-2015, 09:09 AM
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#9
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Moderator Emeritus
Join Date: Jan 2000
Location: West Palm Beach, FL. USA
Posts: 27,659
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Personally I wouldn't use a valve because sooner or later it would be closed when I really, really, needed an overflow. Somewhere in that kluge it should be possible to insert a small vertical rise per Fire Up's suggestion. You only need a couple inches up, over and back down again to prevent draining the top couple inches. Think of it as P-trap in reverse.
The overflow also serves as the tank air vent, though it may also be able to get air through the filler tube. At least a little air needs to get into the tank to avoid a vacuum as the water is pumped out.
__________________
Gary Brinck
Former owner of 2004 American Tradition and several other RVs
Home is West Palm Beach, FL
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06-18-2015, 09:20 AM
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#10
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Registered User
Join Date: Mar 2010
Posts: 8,777
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Quote:
Originally Posted by Car54
I have a fresh water tank in my 2014 Fleetwood Bounder that needs some reworking of the drain valves. The pipes are PVC and where it attaches it uses a threaded connector like they thread into the tank. There's a ring of some sort of solvent on all 4 holes of the tank but I cannot figure out if they are glued in or screwed in. Does anyone know what the common practice is?
I will post a picture shortly.
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Car54
I believe most often fittings are "spin welded" to plastic tanks;
Custom PLastics Spin Weld Process
Mel
'96 Safari
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06-18-2015, 05:40 PM
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#11
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Senior Member
Join Date: Aug 2001
Location: North America somewhere
Posts: 30,870
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Quote:
Originally Posted by Gary RVRoamer
Personally I wouldn't use a valve because sooner or later it would be closed when I really, really, needed an overflow. Somewhere in that kluge it should be possible to insert a small vertical rise per Fire Up's suggestion. You only need a couple inches up, over and back down again to prevent draining the top couple inches. Think of it as P-trap in reverse.
The overflow also serves as the tank air vent, though it may also be able to get air through the filler tube. At least a little air needs to get into the tank to avoid a vacuum as the water is pumped out.
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Good catch Gary! I was totally wrong about the valve, I didn't think about the vent for lowering water level.
__________________
2000 Winnebago Ultimate Freedom USQ40JD , ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA. " My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
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06-19-2015, 07:52 AM
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#12
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Registered User
Join Date: Mar 2010
Posts: 8,777
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Quote:
Originally Posted by Gary RVRoamer
The overflow also serves as the tank air vent, though it may also be able to get air through the filler tube. At least a little air needs to get into the tank to avoid a vacuum as the water is pumped out.
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Gary
On my coach there is no gravity filler tube, the only way makeup air can enter the tank as the water pump draws water out is through the combination overflow/vent pipe.
Mel
'96 Safari
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06-21-2015, 07:16 PM
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#13
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Senior Member
Join Date: May 2015
Posts: 143
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06-22-2015, 05:42 AM
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#14
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Registered User
Join Date: Mar 2010
Posts: 8,777
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Quote:
Originally Posted by Car54
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Car54
What IS that??...and what does it do??
Wondering
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