Low flow pump with decent head?

[Bill Stock]

I'm looking for a reliable low flow pump (5 gph or less) with good head (3
feet or better). Does such a thing exist for a reasonable price?

[NetMax]

I don't know, but in theory, daisy-chaining pumps increases the head and
not the unrestricted flow rate (though the real flow changes anyways as
it's a function of head). If you don't find a pump which meets your
requirements, perhaps two 20gph pumps in series would yield 5gph at your
head pressure.

Another method is to air drive it up. Insert an airline nipple into the
hose near the bottom, and install the airpump *above* the highest
waterline. This assumes the airpump has the required pressure to drive
at that back-pressure. If it works, it will be low flow. I've done this
myself to about 4 feet of back pressure (before the days of magnetic
impellers ;~).
--
www.NetMax.tk

"Bill Stock" > wrote in message
...
> I'm looking for a reliable low flow pump (5 gph or less) with good head
> (3 feet or better). Does such a thing exist for a reasonable price?
>
>
>

[Bill Stock]

"NetMax" > wrote in message
...
>I don't know, but in theory, daisy-chaining pumps increases the head and
>not the unrestricted flow rate (though the real flow changes anyways as
>it's a function of head). If you don't find a pump which meets your
>requirements, perhaps two 20gph pumps in series would yield 5gph at your
>head pressure.

I was looking at the Mini Jet pumps, which claim a flow as low as 13 gph.
But they only have 32" of head.

> Another method is to air drive it up. Insert an airline nipple into the
> hose near the bottom, and install the airpump *above* the highest
> waterline. This assumes the airpump has the required pressure to drive at
> that back-pressure. If it works, it will be low flow. I've done this
> myself to about 4 feet of back pressure (before the days of magnetic
> impellers ;~).

I was wondering about this, ala UGF. Right now I'm using an Aqua Lifter for
my water changer testing, but it is not working out. I keep getting air in
the line, perhaps the diaphram is cracked.


> www.NetMax.tk
>
> "Bill Stock" > wrote in message
> ...
>> I'm looking for a reliable low flow pump (5 gph or less) with good head
>> (3 feet or better). Does such a thing exist for a reasonable price?
>>
>>
>>
>
>

[A Man]

On Sat, 6 Aug 2005 00:05:41 -0400 in article <jPmdnZ2dnZ0J9h7TnZ2dnZWqad-
>, spoke thusly...
> I'm looking for a reliable low flow pump (5 gph or less) with good head (3
> feet or better). Does such a thing exist for a reasonable price?

Usually fountain pumps will go 3 feet but not much more. They go on sale in
the fall usually.

--
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