[Public-List] Bilge Pump Question

[The Rochets]

Thank you, Hugh, Jonathan, George, Rod and Gord for your very helpful  
comments, suggestions and installation details.
What a wonderful resource this list is, with lots of experienced  
people willing to share their knowledge!

Bernard
#608

> Message: 5
> Date: Tue, 8 Apr 2008 07:47:25 -0200
> From: Hugh McCormack <hugh_alberg at hotmail.com>
> Subject: Re: [Public-List] Bilge pump question
> To: Alberg 30 Public List -- open to all
> 	<public-list at lists.alberg30.org>
> Message-ID: <BAY144-W5868E179698B3E32FBFB49DF20 at phx.gbl>
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>
> Good day Bernard,
>
> Others may have a different opinion but what I suggest is that you  
> attach the electric bilge pump discharge directly to the through  
> hull fitting for the Gusher.  You don't say where your Gusher is  
> located but I would direct the discharge from it either overboard  
> or into the cockpit via an extended (if necessary) flexible  
> discharge hose.  The reason that I would do it this way is that you  
> will probably use the electric pump more often than the Gusher.   
> But if you have to use the Gusher at the same time as the electric  
> pump it would help to have seperate discharge lines since the  
> through hull will only pass a certain maximum gal/min and may not  
> be able to cope with the combined discharge of the two pumps.   
> Another, but in my opinion less desireable, solution would be to  
> increase the size of the present through hull and "T" the electric  
> pump discharge into the Gusher discharge.  In this case you would  
> need to install adapters to connect the different sizes of  
> discharge hoses with the bigger through hull.
>
> Hope this is of help.
>
> Cheers,
>
> Hugh McCormack
> #39
> ------------------------------
>
> Message: 7
> Date: Tue, 8 Apr 2008 06:41:22 -0700 (PDT)
> From: Jonathan Adams <laughing_gull at verizon.net>
> Subject: Re: [Public-List] Bilge pump question
> To: Alberg 30 Public List -- open to all
> 	<public-list at lists.alberg30.org>
> Message-ID: <70828.33383.qm at web84102.mail.mud.yahoo.com>
> Content-Type: text/plain; charset=us-ascii
>
> Laughing Gull has a T valve in the starboard cockpit locker that  
> allows me to go from electrical to manual. I do not use it that  
> much, but when I have it has been easy enough.
>
> Jonathan
> 197
> ------------------------------
>
> Message: 8
> Date: Tue, 08 Apr 2008 10:13:43 -0400
> From: George Dinwiddie <gdinwiddie at alberg30.org>
> Subject: Re: [Public-List] Bilge pump question
> To: Alberg 30 Public List -- open to all
> 	<public-list at lists.alberg30.org>
> Message-ID: <47FB7D97.1010304 at alberg30.org>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> The Rochets wrote:
>> I am planning to install an electrical bilge pump to supplement the
>> manual Whale Gusher 10 that came with the boat.
>>
>> I do not like holes in the hull (even above the waterline) and I am
>> wondering if there is any safe way to connect the electrical pump's
>> outlet hose to the manual pump's outlet hose (just above its thru-
>> hull), so I can get by with the existing thru-hull?
>
> Bernard, I put such an arrangement on Calypso.  Our bilge pump
> through-hull is on the starboard sternquarter.  I put a T fitting on
> that throughhull and attached the manual hose to pump straight  
> through.
>   The side entry of the T is arranged to point uphill when the boat is
> on port tack, thereby ensuring that it stays above the waterline even
> when the boat is being driven hard.
>
> It's a long way from the bilge to this throughhull.  The smallest  
> pumps
> (500-800 GPH) won't make it, and the one I have (1500 GPH, I think)
> barely does.  It certainly won't pump the rated flow.  This bilge pump
> is a convenience, not a lifesaver.
>
> I believe the outlet hose from the pump is 1" ID, but I reduced  
> that to
> 1/2" for the run up to the throughhull.  This does not reduce the  
> water
> flow (because the hose is not the limiting factor), but does reduce  
> the
> amount of water that flows back down into the bilge when the pump  
> shuts
> off.  I elected not to use a check valve, feeling that it's just one
> more thing to jam up.
>
>   - George
>
> -- 
>    
> ----------------------------------------------------------------------
>    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
> ------------------------------
>
> Message: 9
> Date: Tue, 8 Apr 2008 10:59:14 -0400
> From: "Rod  Symmes" <harmony at aztec-net.com>
> Subject: Re: [Public-List] Bilge pump question
> To: "Alberg 30 Public List -- open to all"
> 	<public-list at lists.alberg30.org>
> Message-ID: <001b01c89989$1cc0dd30$0100a8c0 at hpdesktop>
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>
> Jonathan;
>     You stated that Laughing Gull has a T "VALVE".   The danger ,  
> as I see it,  is that "Murphy" could leave the valve in the manual  
> position and then if the electric tried to pump out your bilge,   
> the discharge would be blocked by the valve in the wrong position.  
> The consequences could be most unpleasant !
> Of course,  Murphy's Law says you would not be on board to change  
> the valve when this happened.
> George's description of a " T fitting " avoids this problem because  
> both branches are open all the time.  Just be sure that the  
> electric has some form of check valve to prevent some of the manual  
> discharge from draining back into the bilge - unless you think you  
> have enough vertical off the T-fitting the way George describes.
>
> Just my 2 cents.
>
> Cheers,    Rod
>
> ~~~~ _/)~~~ _/)_/) ~~~~
> ~~~~~~~~~~~~~~
>    ~~    ~~~~~    ~~~~
>
>

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