Emergency Pump out

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RAD88

RAD88

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Dec 15, 2008
163
Hunter 30 Glen Cove, NY
We, at our yacht club, want to install a pump on our launch to aid in any boat that is taking on water in an emergency. Our thought is that we could be pumping them out while side towing them to the marina if they need to be hauled. The pump could have a 15' hose that could be flopped over into the boat in need and the out flow from the launch would be the same set up as a bilge pump through hull. What is the best pump and capacity for this application?

We could also use the pump to empty dinghies after a hard rain.
 
C

capejt

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May 17, 2004
276
Hunter 33_77-83 New London, CT
a coupple of possibilities

There are large capacity bilge pumps made that might be what you're looking for, but they require a 24 volt set up. Not hard to do, but then again, not your standard "plug 'n play" either.
Back when I woked for SeaTow, we had large capacity water pumps that were operated by small gas engines. THAT is what you need to keep up with the flow of a large blown seacock or hull damage.
Either way you go, it'll cost you more than mere pocket change.
 
T

Texas Lake Sailor

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Jul 27, 2009
54
Hunter 1981 30 Lake Travis
Here is an idea, the Navy & Coast Gaurd use what are called P-250's, gas powered portable pumps that are used for dewatering. The have the advantage of being able to pump contaminated H2O and the new models I believe can run on gas or diesel. You could try to find one thru surplus sales.
 
PaulK

PaulK

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Dec 1, 2009
1,354
Sabre 402 Southport, CT
Our club uses gasoline-powered pumps. In an emergency, a battery-powered electric pump - even at 24 volts- won't handle as much as even a small gas-powered unit. Make sure to get a pump that doesn't need priming. (Priming pumps is a hassle and a half.)
 
Ross

Ross

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Jun 15, 2004
14,693
Islander/Wayfairer 30 sail number 25 Perryville,Md.

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WDP30XK1AT
  • Dry, self-priming 3" diaphragm pump
  • Easy starting Honda OHV commercial engine
  • 80 gal./min capacity
  • Special "rock channel" prevents case damage
  • Perfect for low volume, dry run operation
MSRP $1,865.00*



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*Manufacturer's suggested retail price. Price excludes applicable taxes. Dealer sets actual selling price.

This is what I would choose. Or this:

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WT30XK3A
  • Heavy-duty 3" construction trash pump
  • Easy starting Honda OHV commercial engine
  • 319 gal./min capacity
  • Solid handling capability up to 1 1/16"
  • Cast iron volute and impeller
  • Quick clean out port
MSRP $1,629.95*



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*Manufacturer's suggested retail price. Price excludes applicable taxes. Dealer sets actual selling price.
However the second pump is not self priming. The diaphragm pump is good for 4800 gallns per hour while the trash pump will do 19,000 gallons per hour.

Link: http://www.hondapowerequipment.com/...&section=P2WP&modelname=WT30&modelid=WT30XK3A

Also from the Honda site:
All Pumps


De-Watering


Submersible


Construction


Ag/Chemical




Tools & Resources




General Information





Storage Tips


  • Flush the pump case with clean fresh water, then completely drain to prevent damage from freezing
  • Cover intake and discharge ports to prevent the entry of debris during storage
Priming Tips


Self Priming


The term Self Priming is actually an industry term that describes the ability of a pump to create a partial vacuum by purging air from the intake hose and pump casing. All Honda pumps are self priming by definition. All self priming pumps require water to be added to the pump casing to start the priming process.


Priming Tips


  • Place the pump as close to the water source as possible. The less lift required will improve priming time
  • Fill the pump case completely with water (Never operate a centrifugal pump without water in the pump casing)
  • Start the pump engine.
  • By partially restricting the discharge hose, priming time can be improved
  • Shutting off a pump will allow water to flow out of the suction hose, requiring priming.
  • The use of a foot valve on the end of the suction hose will prevent water from flowing out of the suction hose if you stop the pump and reduce time required for the pump to regain its prime.
  • Wear off the volute and Impeller can decrease pump performance and increase time required to prime the pump. Regular inspection and maintenance of your pump will maintain peak performance
 
RichH

RichH

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Feb 14, 2005
4,773
Tayana 37 cutter; I20/M20 SCOWS Worton Creek, MD
My choice would be a self-priming 'trash pump' ...... with DUAL/paralled strainers arranged in a 3 valve block and bypass configuration - so that one strainer can be cleaned, etc. while the 'redundant' strainer remains "on". In such a system BOTH strainers are normally 'open' to flow and you only switch to 'one' when the flow becomes blocked with 'trash', etc. The strainers should be selected on the basis of how FAST they can be 'cleaned'.
 
kenn

kenn

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Apr 18, 2009
1,271
CL Sandpiper 565 Toronto
At our club we have some hefty electric high-volume self-priming pumps mounted on hand-carts, with 1-3/4" hoses, that can be quickly whistled to a dock or slip, hooked to shorepower and started instantly. Yes they're GFCI-protected :)

Gas/diesel pumps are OK, but unless they are started and checked frequently, they can be hard to start when an unfamiliar user is in a panic.
 
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