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Topic: Water tank vent mod (Read 693 times) previous topic - next topic

Water tank vent mod

Been meaning to do this since we purchased our coach. Peeves me to loose water when it's full for the first several left hand turns.  Mr ED had done this prior and I'm coping. All 90 are positioned to not pond water. It either returns to the tank or drains overboard. Making our annual trip back east next week to test how it works.

Re: Water tank vent mod

Reply #1 –
Why drive with a full tank?
I allways stopped at around 3/4 full.
Johnh
Coachless, now use aircraft. 2003 Ford Travelair TC280 class C. Super shape. Just for 1 yr .
1994 Ford E350 ClassC,total renovation inside and out. Now sold.
2000 U295  36' Cummins 350 c/w Banks Stinger, Resonator upgrade,Solar, LED lites.Residential fridge with slide out pantry. Build 5674. Sold
ex 92 GV 022C ored Cummins. Sold
ex 95 GV240 cat 3116. Sold
2017 Mini cooper s & 2016 land Rover LR2 HSE  LUX.
jhaygarth@aol.com    SKP #130098
treat everyone as you would like to be.

Re: Water tank vent mod

Reply #2 –
No place to hook up normally were I go

Re: Water tank vent mod

Reply #3 –
Quote from: dsd –
No place to hook up normally were I go

Same with us. I will get around to that mod and Rogers hot water back to the tank mod too. Someday
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: Water tank vent mod

Reply #4 –
Quote from: craneman –
Same with us. I will get around to that mod and Rogers hot water back to the tank mod too. Someday
Yes the hot water return mod is on the list. I really like being able to add hot water to a near freezing water tank. I doubt Ill ever operate in those conditions but have the return is a great idea

Re: Water tank vent mod

Reply #5 –
My recirculation system says us a lot of water.
Peter and Frieda Morin
1999 36ft. U320 Foretravel
Build # 5436
1998 Suzuki Sidekick Sport

Re: Water tank vent mod

Reply #6 –
Quote from: John Haygarth –
Why drive with a full tank?
I allways stopped at around 3/4 full.
Johnh
So yesterday when I was filling tank I noted that my indicated 3/4 full was exactly at the tank 1/2 full. My full mark was at 3/4 full about 9 inches from the top. I overfilled to about 4 inches from the top
Eventually ill install a sea level system and adjust full to read full minus a couple inches

Re: Water tank vent mod

Reply #8 –
I added a similar overflow mod but with a gate valve included.  For a similar reason. We used to boondock a lot at a spot near a dump station about a mile away but with a wicked left turn.
  Always lost a lot of water on the way back.  I never close it 100% though , maybe 80% if need be.... I rarely use the gate valve now but it's there if I need it.
Robert and Susan
 1995 36' 280 WTBI 8.3 3060r
 1200 watts on the roof, 720 Ah of lithium's
 Build # 4637. Motorcade # 17599
        FMCA  # 451505
        18  Wrangler JLUR

Re: Water tank vent mod

Reply #9 –
Did the overflow mod 3 years ago and relocated the overflow to the floor behind/under the Manabloc.  The overflow is more of a vent.  When I boondock fill, at Quartzsite for instance, I fill until water flows out the overflow/vent.  When I get back to camp I lost maybe a quart.  The mod is pure genius.
2001 4010 U320 build #5865 "Bluto-d-Bus" since 09/18
2006 Honda Element ESP Toad
Full timing since 2016 in Western MT
Copilot: Sitka
1975 GMC 260 Avion: sold

Re: Water tank vent mod

Reply #10 –
I also have a valve in the overflow. Just have to remember to open it before turning the pump on. Depending on how far you go after fill quite a bit.
Bruce, Linda, and Macy
Zoey RIP 1/20/19
1999 U295 40' build #5400
2017 silver Jeep Wrangler, 1260 watts of solar on top
Moving around the country

Re: Water tank vent mod

Reply #11 –
Our 1989 GV has the fresh water tank up front, under the dash. The vent pipe/overflow is forward  and then went down. I raised the hose to create a loop above the tank to alleviate siphoning,  then installed a "Y" fitting where the hose came out the "firewall". I then installed a 12V water pump down on the coach frame, with an intake hose end I can insert into our water cans when I need to add water. The output end of the water pump has a hose that is plumbed into the "Y" fitting above the tank.  I kept the existing vent line up high and then down to the body strut in front of the passenger tire. A 12V rocker switch controls the on/off feature of the pump.
I learned to keep the vent open so the tank could "burp" the air out as I was filling. I got tired of constantly getting wet when I had to stop and let the tank "burp". Water would gush out and spray all over me.
Now when we start running short of fresh water we take our car and six gallon jugs and go get water. No need to break camp until the black and gray tanks are almost full.
Nitehawk,  Demolition Lady, & our NEW master, Zippy the speeding BB cat.
1989 Grand Villa 36' ORED
Oshkosh chassis, 8.2 DD V8
2006 Saturn Vue AWD

Re: Water tank vent mod

Reply #12 –
Quote from: bbeane –
I also have a valve in the overflow. Just have to remember to open it before turning the pump on. Depending on how far you go after fill quite a bit.
I'd mess that up for sure either sucked empty or blown up full. I wanted to retain an always active vent system. Others have relocated to the bottom of the coach and considered that but left in the wheel well. Hoping to strip and paint the wheel wells and will look at it closer next winter.