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The Johnson Cartridge Pump uses remarkably little electricity for the amount of water it pumps. The improved, efficient motor also provides increased service life, thanks in part to an ingenious solution which circulates the discharge water around the motor for cooling.
The improved design of the 500 GPH cartridge pump includes easy-to-install Dura-Port discharge ports to eliminate stress cracking caused by over-tightened hose clamps. This pump comes with both a straight and a 90° smooth elbow Dura-Port as well as a removable check valve.
Johnson 500 GPH Cartridge Bilge Pump Specs
• Capacity 3' Head: 525 GPH (8.72 gal/min)
• Capacity Straight: 630 GPH (10.57 gal/min)
• Amperage: 2.5 A
• Fuse Size: 5 A
• Connection: 3/4"
• Max Dia.: 2.75"
• Max Height: 4.4"
• Weight: 9.6 oz.
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Q:What is the maximum pressure that this pump can produce?Asked on 9/9/2014 by Lou from Ottawa
The manufacturer does not give the maximum pressure of the Johnson 500 GPH Bilge Pump. They do indicate that the pump is strong enough to lift the water from the bilge up to 3 feet above the pump.
SteveAnswered on 9/9/2014 by Anonymous
Q:Do you have Johnson Pump Cartridge Model number 28552? If so, cost, delivered.
Thanks, Bob CassedayAsked on 4/9/2012 by Bob from Palo Pinto, TX
Q:How long are the electrical leads wires on this pump?Asked on 11/24/2010 by Speck Detector from Oviedo, FL.
Q:This pump looks similar to the one on my 1998 Bayliner 2050SE Capri. The pump on my Capri is red and named "Johnson Pump". It is a 500GPH pump with a very similar profile. Is the Mayfair a replacement pump?Asked on 5/31/2009 by Joe from Everett WA
A:This would be an upgrade from your 500gph pump as this on is a 720gph, and would require complete replacement.Answered on 2/15/2011 by Justin from Overton's
Q:WILL THIS BILGE PUMP REPLACE MY ORIGINAL 1986 MASTERCRAFT MAYFAIR JETTISON MODEL 1225 BILGE PUMP. IF YOU HAVE ANOTHER BILGE PUMP THAT IS MORE COMPATIBLE AS A REPLACEMENT I WOULD PREFER TO PURCHASE THE MORE COMPATIBLE PUMP.Asked on 5/9/2009 by MICHAEL from HADLEY, NEW YORK
A:I do apologize but we do not have a direct replacement for your current bilge pump. This pump will work but you might have to drill new holes.Answered on 2/15/2011 by Toby from Overtons Tech. Dept.