Re: (ET) Thinking more about this water tank thing....

["Pieter Litchfield" <pieter_litch yahoo com>]

you don't need a reversible pump!  Plumb 2 values in a "tee" at the inlet
and two more on the outlet (total 4 valves)  you can select in from the
water barrel pickup hose, or in from the on board tank.  You can select out
to the sprayer, or out to the on-board tank.
To load the tank, select in from water barrel pickup hose, out to on-board
tank. To spray, select in from on-board tank, out to sprayer.
I have done this before!


-----Original Message-----
From: Christopher Zach [mailto:cz alembic crystel com] 
Sent: Sunday, April 15, 2012 2:02 PM
To: elec-trak cosmos phy tufts edu
Subject: Re: (ET) Thinking more about this water tank thing....

On 4/15/2012 1:52 PM, David Roden (Akron OH USA) wrote:
> You could use a reversible transfer pump.  Boaters sometimes use them 
> to transfer fuel from one tank to another, but they work fine with 
> water.  Most run on 12v.  I've seen a few rated for 24v use, but never 
> any (that I can
> recall) for 36v.

That is a thought, however can a transfer pump provide a nice 30-40psi at
3-4gpm (enough to run a hose and a sprayer to spray off the roof of the
shed).

I could go 12v on the pump, however that would be higher current draw and
require me to tap the pack. Which has it's own problems.

Chris


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