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Re: NFC: Pressure (prolly off-topic. :)
As a retired firefighter...changing the position of the pump will not change
the total fricition lose..rises and falls cancel each other out...bends and
restrictions (pipe size, pipe length,and filters) are your problems. Klaus
is correct...with all the restrictions you describe you might not have any
water flow. It does matter if your pump pulls or pushes it will not change
the output. Larger diameter pipe might help...but you are trying to supply
to many appliances with to little water volume. Instead of trying different
hook ups or a larger pump...bring in another truck (pump). Cut down on
lengths of pipe, increase width of pipes and use a seperate pump for each
appliance (filter, and UV light). Watch a fire, we never use the same truck
(pump) a supply a ladder hose and hand lines. Seldom will you see more than
two or three lines off one truck (pump) If there are six or seven lines
(returns)...there will be at least three or four trucks pumping (pumpers).
First try seperate pump..cheapest and easiest way to go.
----- Original Message -----
From: Al G Eaton <sege7_2000 at yahoo_com>
To: <nfc at actwin_com>
Sent: Thursday, February 28, 2002 9:06 AM
Subject: Re: NFC: Pressure (prolly off-topic. :)
> You can test your theory by unhooking the filters etc
> downstream from the pump and hooking up a hose back
> into the tank and seeing if there is an appreciable
> increase in flow... the losses through the twists and
> turns is certainly part of it, but I bet the rainbow
> filters are actually the bigger restrictor... you may
> need to look up rainbow and see what pumps they
> --- Joshua Wiegert <JLW at dune_net> wrote:
> > Hey all.
> > I've got a 92G Corner tank, with an overflow system.
> > I've got a massive
> > pump on it, which, at the output end, just doesn't
> > seem to give much flow.
> > It is rated at 2400 GPH. I'd guess it is putting
> > out less than 100 GPH.
> > The impeller is clean, etc. etc. The trouble is...
> > the way the former owner
> > set this tank up, the pump comes immediately after a
> > sump, and then must
> > push water thru a Rainbow LifeGuard MechaniFilter,
> > and a UV Steriliser.
> > Worse, it pumps up about 4", then back, then drops
> > down, thru the
> > mechanifilter, up again (8"), left to the UV, up the
> > UV (18"), right out of
> > the UV, and finally up the tank again. All these
> > bends, turns, rises and
> > falls are eating up my head pressure, and thus
> > dropping my flow to next to
> > nil.
> > Now, my question is this: If I move the pump to
> > directly under the tank, so
> > the bends, rises, falls, etc. are all before the
> > pump (and, thus, more or
> > less powered by the natural flow of water, I think?)
> > would this give me
> > increased flow? Obviously, when I rework this in a
> > few days, I'm going to
> > try to minimise the twists, turns, rises, and falls,
> > but ... I'm wondering
> > where the best place to put the pump is.
> > Joshua.
> > end
> > ____^__
> > ><,Darwin,>
> > Joshua L. Wiegert
> > NFC Lists Administrator
> > JLW at dune_net
> > www.geocities.com/Josh_Wiegert
> > owner-nfc at actwin_com
> > www.dcpondcare.com
> > pondcare at dcpondcare_com
> > ICQ Unavailable For Now AIM
> > UID: JoshuaWiegert
> > Feel free to contact me by any of the above means
> > for any reason.
> > -=-=
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