[C38] bilge pumps

[Charles]

A couple of comments. I also have two bilge pumps located fore aft of 
the shower sump (sump now contains my third battery). I have an in-line 
flow check valve that I have to clean about once per season. I think the 
best answer would be two pumps with separate exit hose options (this 
would allow for greater flow and would reduce the risk of a plugged 
check valve).
I looked at the pump Rich is considering and was a bit discouraged that 
it only flows at 5.5 gpm. If it is hooked up to run after your regular 
float switch shuts off... then it really won't keep your bilge dry 
except for directly after the main bilge cycles.

Charles Finn
Mighty Quinn #114

Rich West wrote:
> Hi Everyone,
> I have always meant to install a diaphragm bilge pump in addition to 
> the standard one I have now. The diaphragm pumps will pump the bilge 
> completely dry and have a check valve system built in as part of the 
> pump. Using an electronic pump controller, it's possible to run the 
> diaphragm pump for a set time period after the float switch turns off. 
> With the proper pickup/strainer on the end, it will really dry the bilge.
> Here's the pump I had in mind: 
> http://www.defender.com/product.jsp?path=-1|51|299222|84462|315208&id=143715 
> <http://www.defender.com/product.jsp?path=-1%7C51%7C299222%7C84462%7C315208&id=143715> 
>
> Rich, Legacy, #260
>
> ------------------------------------------------------------------------
> *From:* listserve-bounces at catalina38.org 
> [mailto:listserve-bounces at catalina38.org] *On Behalf Of *Duff, Russ (R.W.)
> *Sent:* Monday, February 11, 2008 10:37 AM
> *To:* Catalina 38 Listserve
> *Subject:* Re: [C38] bilge pumps
>
> Reading this last post made me think, why not put a check valve in the 
> line for the smaller pump, and leave the line for the bigger pump 
> open. In an ideal situation, the bigger pump would never come on, and 
> if the check valve in the smaller pump ever stuck closed, “No big 
> deal”, the bigger pump is there. I think that is what I’m going to do. 
> Thanks guys!
>
> Sincerely,
> *Russ Duff*
> Catalina 38, Hull #112
> "AVANTURA"
> Lake Erie
> Grosse Ile, Michigan
> RDUFF*/ /**/AT/* VISTEON*/ /**/DOT/* COM
>
> AVANTURA */AT /*COMCAST */DOT /*NET
>
> ------------------------------------------------------------------------
>
> *From:* listserve-bounces at catalina38.org 
> [mailto:listserve-bounces at catalina38.org] *On Behalf Of 
> *eyriepg at comcast.net
> *Sent:* Monday, February 11, 2008 1:30 PM
> *To:* hlhowell at pacbell.net; Catalina 38 Listserve
> *Subject:* Re: [C38] bilge pumps
>
> Something that I plan to do is put a small pump with a small hose in 
> my bilge. This smaller pump would have less water to flow back into 
> the bilge after it stops because of the smaller diameter hose. The 
> pump that I have now would only come on in emergencies if I elevated 
> the float valve a couple of inches.
>
> Phil Gay
>
> C38 049 Que Linda
>
> Everett, WA
>
>     -------------- Original message --------------
>     From: Les <hlhowell at pacbell.net>
>
>     > Hi, Ken,
>     > I am not biased in any way, but most reputable sites will tell
>     you not
>     > to put check valves in bilge pump lines. One way to minimize back
>     > flushing is a riser tube in the pump line, that goes from the
>     pump up to
>     > above the water line somewhere amidships, with a siphon break at the
>     > top, like that used on the muffler systems. This would then
>     reduce the
>     > back flush to about a glass full. It is too bad that there is no
>     "sump"
>     > to speak of in our bilges. I haven't implemented that yet. One of
>     the
>     > other posters spoke of using two pumps and adding a float switch
>     on the
>     > shower sump so it would work as a bilge pump as well. That sounds
>     like
>     > a good idea, backup, plus if all three are working, that's a lot! of
>     > water going out.
>     >
>     > Regards,
>     > Les H
>     > On Sun, 2008-02-10 at 19:38 -0800, Kenneth M. Sutto wrote:
>     > > Here,s the problem. My bilge pump works fine except that when it
>     > > shuts off all the bilge water in the outlet line runs back into
>     the
>     > > bilge. It's like I ever pumped it out. There is always about a
>     half a
>     > > two gallon bucket left floating. I want to put a check valve just
>     > > past the pump to keep the water from running back. My worry is
>     that
>     > > once the line is full of water and the pump kicks in, will it be
>     > > strong enough to pump out the water in the line plus what's in the
>     > > bilge. I don't want to have to end up with some kind of 35hp
>     ejector
>     > > pump that sticks up through the floor boards 2 feet with a hose
>     the
>     > > size of a fire hose and needs four extra batteries to run it.
>     > > Anybody with the same problem? > & gt;
>     > > Ken Sundancer
>     > >
>     > >
>     > >
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