[Public-list] Bilge Pump Discharge

[Roger L. Kingsland]

Thanks George, makes sense.

Roger

----- Original Message ----- 
From: "George Dinwiddie" <gdinwiddie at alberg30.org>
To: "Alberg 30 Public List -- open to all" <public-list at alberg30.org>
Sent: Tuesday, July 13, 2004 7:06 PM
Subject: Re: [Public-list] Bilge Pump Discharge


> If I really need to pump a lot of water in a hurry, the electric bilge
> pump is not going to do me any good.  The one I put in (1100 gph, I
> think) trickles a small stream pushing up that hill to the counter under
> the stern.  The one I put in originally (500 gph) would only pump out if
> the battery was charged to max by shorepower.  Normally it only got the
> water within a few inches of the outlet.
>
> BTW, I learned another trick from This Old Boat: reduce the hose from
> the size on the pump down to 1/2" ID.  That way there's less water to
> drain back when the pump shuts off.
>
>   - George
>
> Roger L. Kingsland wrote:
> > Thanks George.  I am wondering if, in a pinch when one needs both manual
and
> > electric pumps operating at maximum efficiency, having a common
discharge
> > could compromise performance?  Do you agree, or am I splitting hairs?
> >
> > Roger
> >
> >
> >
> > ----- Original Message ----- 
> > From: "George Dinwiddie" <gdinwiddie at alberg30.org>
> > To: "Alberg 30 Public List -- open to all" <public-list at alberg30.org>
> > Sent: Tuesday, July 13, 2004 5:10 PM
> > Subject: Re: [Public-list] Bilge Pump Discharge
> >
> >
> >
> >>Roger,
> >>
> >>My bilge pump through-hull is to starboard, and my exhaust outlet is to
> >>port.  Until recently, I only had a manual pump, but when I added the
> >>electric pump I teed off the same through-hull to avoid putting another
> >>hole in the boat.  I used a standard cast-bronze plumbing tee and put
> >>the 1/2" hose for the electric pump on the side that's uphill at rest.
> >>The 1-1/4" manual pump hose is on the end of the tee, and flows straight
> >>down.  I haven't needed any check valve.
> >>
> >> - George
> >>
> >>On Tue, Jul 13, 2004 at 03:49:16PM -0400, Roger L. Kingsland wrote:
> >>
> >>>Thanks Mike,
> >>>
> >>>Do you have a "Y" at the discharge and does it have check valves to
> >
> > prevent
> >
> >>>water from one pump flowing the wrong way through the other.
> >>>
> >>>Roger
> >>>
> >>>----- Original Message ----- 
> >>>From: "Meinhold, Michael J" <MICHAEL.J.MEINHOLD at saic.com>
> >>>To: "Alberg 30 Public List -- open to all" <public-list at alberg30.org>
> >>>Sent: Tuesday, July 13, 2004 3:22 PM
> >>>Subject: RE: [Public-list] Bilge Pump Discharge
> >>>
> >>>
> >>>
> >>>>I've got an above-water through hull to port that matches the exhaust
> >>>>through hull to starboard. It's connected to the electric and manual
> >
> > bilge
> >
> >>>>pumps. It looks original to me!?
> >>>>
> >>>>Mike
> >>>>Rinn Duin #272
> >>
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> >>
> >>
> >
> >
> >
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>
> -- 
>   ----------------------------------------------------------------------
>    When I remember bygone days                         George Dinwiddie
>    I think how evening follows morn;            gdinwiddie at alberg30.org
>    So many I loved were not yet dead,           http://www.Alberg30.org
>    So many I love were not yet born.
>                                              'The Middle' by Ogden Nash
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>
>
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