[Public-List] Automatic bilge pumps

Tue May 9 00:43:05 PDT 2017

Bill,

The Rule 25S is a common automatic bilge pump that some folks use
http://www.xylemflowcontrol.com/marine-and-rv/bilge/rule-electric-submersible-pumps/rule-500.htm

The flow rate at the exit of the pump is 500gph.  Add a two meter lift and
the flow falls to 260gph http://www.xylemflowcontrol.com/files/950-0518.pdf

Jonathan

On Tue, May 9, 2017 at 5:25 AM Gordon Laco via Public-List <
public-list at lists.alberg30.org> wrote:

> Good point.  All electric pumps are rated at the flow they’ll drive at the
> outlet.  Pushing water up to above the waterline from deep in the bilge
> will cut flow significantly.
>
> On 2017-05-08, 10:19 PM, "Public-List on behalf of George Dinwiddie via
> Public-List" <public-list-bounces at lists.alberg30.org on behalf of
> public-list at lists.alberg30.org> wrote:
>
>     The only sizing that really matters is to buy a pump that can
> sufficiently reach the discharge outlet.
>
>     George
>
>     Sent from a primitive pocket computer. Please assume all errors are
> due to that.
>
>     > On May 8, 2017, at 18:56, Mike Lehman via Public-List <
> public-list at lists.alberg30.org> wrote:
>     >
>     > I wholeheartedly agree with Gordon on this...the water should stay
> outside
>     > of the boat! Fix leaks or potential leaks by replacing hose, clamps
> etc.
>     >
>     > On Mon, May 8, 2017 at 5:26 PM, Gordon Laco via Public-List <
>     > public-list at lists.alberg30.org> wrote:
>     >
>     >> Hello Bill,
>     >>
>     >> Any automatic bilge pump should only be relied upon to evacuate
> minor
>     >> leaks when you’re not aboard.  So any pump will do… I believe the
> 450 gal
>     >> per hour variety is nice and small, and won’t run your battery down
> too
>     >> much.
>     >>
>     >> I personally (well professionally too) have a prejudice against
> automatic
>     >> pumps.  Here’s why.  The main thing an automatic pump will do is
> hide a
>     >> problem from you.  You’ll never know your boat has developed a
> chronic leak
>     >> until one day you arrive and the bilge is full and your batteries
> dead.
>     >> Worse, you may be happily sailing and notice that your bilge is
> full, your
>     >> battery is dead, you can’t start the engine, and because the water
> is up
>     >> you can’t find which hose or whatever is causing the problem.
>     >>
>     >> A very powerful electric pump which might keep up with the ingress
> of
>     >> water from a ¾” through hull whose hose has fallen off, will only
> keep up
>     >> the fight for a relatively short time before it kills the battery.
>     >>
>     >> I know some insurance companies, usually non-marine specialists,
> think an
>     >> automatic bilge pump is a safety item, but actually it is the
> opposite, in
>     >> this writer’s opinion.
>     >>
>     >> You can buy a meter that will let you know if and how many times
> the pump
>     >> has come on… but strangely enough most people don’t use them.
>     >>
>     >> Your best defense against a leak is vigilance.  Vigilance in
> prevention
>     >> (good hoses, good clamping, good through hulls, a regimen that
> involves
>     >> closing ball valves when you’re not using that through hull)   Your
> second
>     >> defense is your manual pump.  Last and least is your electric pump.
>     >>
>     >> Gord
>     >> #426 Surprise
>     >>
>     >>
>     >> On 2017-05-08, 5:13 PM, "Public-List on behalf of WILLIAM NEWMAN via
>     >> Public-List" <public-list-bounces at lists.alberg30.org on behalf of
>     >> public-list at lists.alberg30.org> wrote:
>     >>
>     >>    Hello everyone,
>     >>    I expect that the weather there has been better than here,
> Toronto,
>     >> endless rain, but seems to be ending now.
>     >>    I will appreciate any advice regarding the best auto bilge pump
> for
>     >> the Alberg 30.  I purchased a Rule pump in Florida during a
> vacation from
>     >> the Canadian cold. It has worked flawlessly for about 15 years. It
> has now
>     >> decided to go to the bilge pump heaven so I need a replacement.  I
> see that
>     >> the Rule product is still very much available.  My question is what
> is the
>     >> proper gallons per hour for the Alberg 30?  I have not yet removed
> the old
>     >> one from the bilge and expect the model number to be difficult to
> read or e
>     >> may even be obsolete.
>     >>    Wishing a great season to all of your members,
>     >>    Bill NewmanGreat Lake Alberg AssociationMarion Rose, #
>     >> 233newman423 at rogers.com
>     >>    _______________________________________________
>     >>    These businesses support your Association:
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>     >>
>     >>
>     >>
>     >> _______________________________________________
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>     >>
>     >
>     >
>     >
>     > --
>     > Mike Lehman
>     > ~~~_/)_/)~~_/)~~~
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>
>
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-- 
Jonathan M Bresler
S/V Constance Alberg 30 #262
Annapolis/Eastport MD