Re: [Killietalk] Extremely Frustrated With Linear Piston Pumps

["Erny May" <emay1 at wi_rr.com>]

Have to agree with Markus; I have an Alita and the manufacturer send
a special note; after I had purchased it; admonishing me to make sure
to bleed off excess air.

                                        Erny
----- Original Message ----- 
From: "Markus&Heather Brown" <TheBiologist at charter_net>
To: "killifish discussion list" <killietalk at aka_org>
Sent: Thursday, September 25, 2003 7:05 AM
Subject: Re: [Killietalk] Extremely Frustrated With Linear Piston Pumps


> I disagree, the pumps ability to "self regulate" due to overload, or
> maximized pressure is one thing, but constant pressure should be bled off.
I
> have several linear air pumps and I bleed where and whenever I am not
using
> at least 90% of the cfm. I think its a least a good suggestion for the
> situation. Of course, one will not find a better style of pump for the
noise
> level inside the room, no matter what. Although if weather where you are
is
> warm year around, regenerative blowers out side is a good way to go.
> Unfortunately I live in the land or rain and cool temps that would not be
> practical for this application.
> Markus
>
> ----- Original Message ----- 
> From: "Barry Cooper" <bjc3 at cornell_edu>
> To: "killifish discussion list" <killietalk at aka_org>
> Sent: Wednesday, September 24, 2003 11:02 PM
> Subject: Re: [Killietalk] Extremely Frustrated With Linear Piston Pumps
>
>
> > Linear piston pumps, at least the ones sold by Jehmco, are self
regulating
> > and should not have air bled off.
> >
> > Barry
> >
> > At 08:49 PM 9/24/2003 -0700, you wrote:
> > >I believe that it is the system pressure.  A high air delivery system
> > >pressure will cause the pump to develop a higher noise output.  See if
> you
> > >can relieve some of  the system pressure and still get the air delivery
> you
> > >want.  The pump noise level should go down.
> > >
> > >Tom McLean
> > >Portland, OR
> > >AKA NWK
> > >NAMFA
> > >----- Original Message -----
> > >From: <LeeH920226 at aol_com>
> > >To: <killietalk at aka_org>
> > >Sent: Wednesday, September 24, 2003 7:56 PM
> > >Subject: Re: [Killietalk] Extremely Frustrated With Linear Piston Pumps
> > >
> > >
> > > >     The several pluses for the linear piston air pump (I have a
> Jehmco)
> > >are
> > > > they are economical, they are self-regulating and they are quiet. If
I
> > >plug
> > > > mine in, I cannot hear it, and parts of me are failing, but not my
> > >hearing. I can
> > > > hear only the sound of the bubbles when I hook it to the system. It
is
> on
> > >a
> > > > head high solid wooden shelf (above all water). There is something
> wrong
> > >with
> > > > it, if it makes any appreciable noise.
> > > >
> > > > Lee Harper
> > > > Media, PA
> > > > To join the AKA see http://www.aka.org/pages/join.html
> > > >
> > > >
> > >
> > >
> > >To join the AKA see http://www.aka.org/pages/join.html
> >
> >
> > Barry J. Cooper, Prof. Emeritus, Dept. Biomedical Sciences, Cornell
> University
> > Adjunct faculty, College of Veterinary Medicine, Oregon State University
> > Home address: 27505 Riggs Hill Rd., Sweet Home, OR 97386
> (bjc3 at cornell_edu)
> >
> >
> > To join the AKA see http://www.aka.org/pages/join.html
> >
>
>
> To join the AKA see http://www.aka.org/pages/join.html
>



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