Piston vs jet pump/question

[rps]

We pull our water out of the river. There is a piston pump and an old
galvanized pressure tank.
System works okay although I would like a little more pressure. The total
lift (to the upper floor) probably is 25-30 feet.
Would a jet pump make any difference? Would a new pressure tank and the
existing pump increase pressure. Or would I be wise to follow a policy of
"if it ain't broke don't fix it.?"

--

[Hamm4fun]

Piston pump? Are you sure it is not a centrifugal pump? Haven't seen a piston
pump in 30 years at least. As a matter of fact I have only seen one for potable
water use.

[ben williams]

Oh, yea they're still around. The piston pumps can't be beat for longevity.
To the poster, the pressure can be turned up to 50-60 psi, but thats about
it. Wait till it dies and replace it with a centrifugal one (not a jet pump,
that's for PULLING from depth).
ben

Hamm4fun <hamm...@aol.com> wrote in message
news:19990924025404...@ng-xb1.aol.com...

[Gary Slusser]

rps <r...@surenet.net> wrote

Actually the pressure tank is responsible for the water pressure to the
building. The volume/pressure of the air precharge inside the tank has to be
set correctly. Correct is 1-2 psi less air than the cutin pressure switch
setting; i.e. if 20/40 19 psi of air, 30/50 29 psi etc.. The air pressure
being taken with no water in the tank.

Gary
Quality Water Associates

[ben williams]

Gary Slusser <qwas...@ptd.net> wrote in message
news:01bf0697$4e830160$071b...@qwasluss.ptdprolog.net...

Didn't most of the systems that used piston pumps also use the
'side-of-tank' air inlet valve?
No precharge and no diaphram, just an adjustment on the air valve to let out
the right amount of air?
ben

[Gary Slusser]

ben williams <wms...@netquick.net> wrote

I would think they did but around here it's rare that a galvanized tank would
last this long if original with a piston pump and precharged tanks can be
used.

Gary
Quality Water Associates