|
|
08-11-2011, 10:37 PM
|
#1
|
Senior Member
Join Date: Apr 2011
Location: Oregon Ciry Oregon
Posts: 2,858
|
Pressurized water tank
For some the person who owned my SMB before me pulled the fresh water tank and pump out from under the sink. They left the pump switch, wiring, sink drain, and city water connection. I want to replace the on board fresh water but am not sure that I want to put in a pumped system.
Has anyone put in a pressurized water system?
My thought is to have a fresh water tank that can hold around 10 gallons at 65 to 90psi. At that pressure the water should flow out of the faucet just like at home.
As the pressure in the tank decreases it could be brought back up with either a hand pump or on board air.
Thoughts?
---
I am here: http://maps.google.com/maps?ll=45.605993,-123.945605
- Larrie
89 Ford RB
__________________
Larrie
Read detailed trip reports, see photos and videos on my travel blog, luinil.com.
Current van: 2002 Ford E350 extended body camper with Colorado Camper Van pop top and Agile Offroad 4WD conversion.
|
|
|
08-12-2011, 07:35 AM
|
#2
|
Senior Member
Join Date: Apr 2008
Location: Carmel Valley, CA
Posts: 634
|
Re: Pressurized water tank
"Thoughts?"
How about a non-pressurized tank and a Shur-flo pump? You get steady water pressure and no need to re-pressurize the tank all the time.
Plus you don't need a pressure tank...
Bill
__________________
2008 RB 50 Pueblo gold, Diesel, 4X4, Aluminess
NO2B
|
|
|
08-12-2011, 09:26 AM
|
#3
|
Senior Member
Join Date: May 2007
Location: Washington - Ridgefield
Posts: 4,728
|
Re: Pressurized water tank
You are looking at substantial metal tank. Maybe a 15-20 gallon tank to hold 10 gallons and enough air volume to keep it pressurized.
Tank can't be bare steel, it would rust. Aluminum might work, maybe 3/16" thick to hold the pressure. It should be a round tank, like an air tank on a compressor, to best resist the pressure and deformation.
Look at a 20 gallon air compressor tank for approximate size. Or maybe two 10 gallon tanks, one for water, one for air. Where would you locate it? Who will fabricate it for you? Would you have it pressure tested?
A rectangular plastic tank and pump look like a much simpler, smaller solution to the problem.
Mike
__________________
Alaska to Key West, Labrador and more
Prostate cancer survivor. See Thread Prostate cancer and Sportsmobiles
2015 VW GTI 2020 Fiat 124 Spider
2012 E250 Hitop camper
|
|
|
08-12-2011, 09:30 AM
|
#4
|
Senior Member
Join Date: Apr 2007
Location: Blairsden, CA (when not on the road)
Posts: 1,109
|
Re: Pressurized water tank
Quote:
Originally Posted by Skywagon
How about a non-pressurized tank and a Shur-flo pump? You get steady water pressure and no need to re-pressurize the tank all the time.
Plus you don't need a pressure tank...
Bill
|
X2. You're making things a bit more complicated then you need to. But if that's what you want, and if the noise of the Sure-flo running each time you want water bothers you, check out Badger's site. He put in a pressurized system.
__________________
Scatter
You can be anything you want on the Internet,
it amazes me that so many choose stupid....
2007 RB50, 6.0
K1WGB
|
|
|
08-12-2011, 10:01 AM
|
#5
|
Senior Member
Join Date: Apr 2007
Location: Parker, CO
Posts: 7,644
|
Re: Pressurized water tank
I don't think it's a bad idea, I do think you shouldn't be looking at a house/well type system- you don't need to deliver 8 GPM after all.
I've got a pressure washer that runs off of compressed air. It stinks as a pressure washer, but as a pressurized water source or outdoor shower it's great. The pressure comes from the OBA source- which is not pressurized for long term use but simply drives the water- meaning your air compressor will run instead of the sure-flo pump, but in terms of simplifying the system and dual purposing your OBA, I don't see why it wouldn't work.
__________________
it was good to be back
|
|
|
08-12-2011, 11:40 AM
|
#6
|
Senior Member
Join Date: Jul 2010
Location: BC Canada
Posts: 427
|
Pressurized water tank
Cement trucks have pressurized water for adding water to the cement or washing off the equipment. If you have an on board compressor you can just put a regulator on the water tank and you're done.
I read of a couple that overlanded for 20 years in a VW Bus. They had a gravity feed system with the tank at the rear inside of the raised roof. no moving parts there, didn't do much for COG, however.
__________________
"there is neither science nor fact prevailing here" - vlamgat
|
|
|
08-12-2011, 01:32 PM
|
#7
|
Senior Member
Join Date: Nov 2009
Location: Pacific Northwest
Posts: 378
|
Re: Pressurized water tank
I'm with Jage on this one. If you only carry 10 gallons of water in a tank, it's gone in four minutes at 2.5 gpm (which is what the SMB installed faucet feeds at using Shurflow pump head pressure). Even with a water restrictor, you're not going to extend water use much. The entire system should not exceed 120 psi or it will require steel piping vs. plastic. If you're into using a hand pump faucet, that would work too.
__________________
2010 Ford E250 5.4L V8 Gas 2WD
SMB Mod RB36 w/PH Prop Stove & Furn Frig 10G Wtr Elect
Silver Bullet
|
|
|
08-12-2011, 02:16 PM
|
#8
|
Senior Member
Join Date: Apr 2011
Location: Oregon Ciry Oregon
Posts: 2,858
|
Pressurized water tank
This is all great information. Thanks. I am thinking of doing this Myth Buster style. There is some 3" PVC pipe in the back yard that will be used as to make a proof of concept small scale test setup. If that works then I will up scale it in PVC and do some additional testing.
Still working out location. So far have come up with three; under the body with protection plate, back under he sink, or on the floor under the stove.
Am trying to stay away of an electric water pump. Am already sharing circuits because my distribution panel only has four. The one for the pump is being used for the Igloo cooler.
---
I am here: http://maps.google.com/maps?ll=44.590346,-123.264525
- Larrie
89 Ford RB
__________________
Larrie
Read detailed trip reports, see photos and videos on my travel blog, luinil.com.
Current van: 2002 Ford E350 extended body camper with Colorado Camper Van pop top and Agile Offroad 4WD conversion.
|
|
|
08-12-2011, 02:46 PM
|
#9
|
Senior Member
Join Date: May 2007
Location: Washington - Ridgefield
Posts: 4,728
|
Re: Pressurized water tank
A word of caution here. PVC pipe and pressurized air are not a good combination. Over time the pressure will cause the PVC to crack and fail. Pressurized air will rapidly expand and the PVC will literally explode, throwing shards everywhere. It doesn't happen to every piece of PVC, and it doesn't happen immediately. But, it can happen and with nasty results. That is why is against codes everywhere to run compressed air in PVC pipe. A test with a piece of PVC will only prove that piece won't explode at the test pressure and time. It could blowup an hour or a year later, or maybe never. I've seen one PVC/compressed air (100 psi) explosion, and it wasn't pretty. It was the reason my garage has compessed air run in copper pipe.
Water in PVC is not an issue, because if the pipe fails, it simply leaks because the water will not expand like air will.
If you really want to do this, do it at a reduced pressure, under 20psi, not at the 65-90 psi you earlier proposed.
Mike
__________________
Alaska to Key West, Labrador and more
Prostate cancer survivor. See Thread Prostate cancer and Sportsmobiles
2015 VW GTI 2020 Fiat 124 Spider
2012 E250 Hitop camper
|
|
|
08-12-2011, 02:53 PM
|
#10
|
Senior Member
Join Date: Apr 2010
Location: Preston, ID
Posts: 1,213
|
Re: Pressurized water tank
I had an Adventurewagen Syncro that had one. Giant PIA. Not only did you have to worry about water leaks, but you also had to worry about air leaks. The AW had on on-board compressor to refill the m***********g thing.
Almost cost me my will to live.
Z
|
|
|
|
|
Thread Tools |
|
Display Modes |
Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Recent Threads |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|