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Old 04-15-2007, 10:09 PM   #1
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plumbing question

I've never been a plumber before, unless you count snakin' a drain or plungin' a toilet. I have a few questions, and know ya'll are the experts.

1: 12 volt water pumps = do I need 1 for the sink, and another for shower? What about the toilet. I have a new Thetford with a foot flush.

2: I only have two tanks so far, 38 gallon Black water, and a 40 gallon fresh water. Does anyone have any schematics from a bus plumbing system?
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Old 04-16-2007, 12:01 AM   #2
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If you have an RV type water pump it would be located right by the tank along with the pressure tank if you have one. If you are rigging something else up you will likely need a pressure switch and stuff, but you would still put it by the tank I would assume. There are on-demand type pumps that go at each faucet, but I think the general consensus on those is that they are convenient, but a dedicated water pump is a better route to go.

Hopefully some others will pipe in here because I can't reference my own water system all that much because I don't have a pump at all. My system uses a regulator and compressed air for silent water delivery at adjustable pressure. It works pretty well although I still need to tinker with it a little more. In the end it probably would have been cheaper or certainly no more expensive to go with a regular pump, but what the heck....I like to tinker.
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Old 04-16-2007, 07:05 AM   #3
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Depends on how much water you intend to use at one time. A house with a well has 1 well pump with a pressure switch to control the pump and pressure tank to maintain constant pressure in the system. This feeds the entire house. We all know what happens if you are showering and someone flushes a toilet, RV is the same way.

I do not think I would try and run dual pumps and pressure tanks off of one storage tank, but I would have a set for each storage tank to keep the systems separate.
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Old 04-16-2007, 09:25 AM   #4
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Deadhead, will this help you out?

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Old 04-16-2007, 10:16 AM   #5
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It certainly helps me out, I was wondering what black and grey water was...
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Old 04-16-2007, 11:45 AM   #6
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Old 04-16-2007, 01:41 PM   #7
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Black water is...er...the "brown" water from the toilet. Gray water is just the stuff from the sink and shower. Some people get really creative and recycle the grey water for tasks like flushing the toilet to maximize their capacity when boondocking.
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Old 04-16-2007, 06:17 PM   #8
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oh yea, that helps a lot. Thanks friend. So I guess one water pump can work for the shower, sink, and toilet. I don't have a hot water heater yet or a grey water tank.
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Old 04-16-2007, 06:45 PM   #9
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Yes one pump will work for the whole system. I have a Jabsco 1.9 lpm pump that is designed for marine use. It operates on pressure, so when the system is charged it turns off, when you turn on a tap away she goes. I chose a pump that puts out less power because I don't want to go through tonnes of water. It puts out enough for a good shower.

Here it is before being hooked up:

http://www.skoolie.net/gallery2/v/Skooli ... 0.JPG.html

ps: Why can't I get my images to paste? I've done it before and it seems my brain has stopped working. I have tried the insert image instructions and still no go, please help!

-Richard
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Old 04-16-2007, 07:48 PM   #10
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kewl, I got a ShurFlo model 2088 for my water pump. It's 2.8 gallons per minute. Hopefully it wont waist too much water, and if it does, maybe I'll be able to throttle it somewhere.
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