Need help choosing new pump.

1992 25’ Excella:



I’m looking for a new water pump to replace the original Shurflo 2088-403-144. The old one is rated at 4 amps and 2.8 gpm. I found two new Shurflo Revolution 12v pumps online as listed below:



Name : SHURFLO® REVOLUTION™ Pump

Model Numbers OEM/Aftermarket : 4008-101-A65, 4008-101-E65

Voltage : 12 VDC

Flow Rate GPM/LPM : 3.0 GPM [11.4 LPM]

Amps (Max.) : 7.5

Shut-Off Pressure : 55 PSI [3.1 BAR]







Name : SHURFLO® REVOLUTION™ Pump

Model Numbers OEM/Aftermarket : 4028-101-A54, 4028-101-E54 Voltage: 12 VDC

Flow Rate GPM/LPM : 2.3 GPM [8.7 LPM]

Amps (Max.) : 5

Shut-Off Pressure : 50 PSI [3.4 BAR]





If I go with the top one, I get about the same gpm but it draws almost twice the amps.



If I go with the second one listed, I lose .5 gpm, and it still draws 25% more amps than the original.



What’s going on? Does anyone have any suggestions or explanations to help me understand? How many amps can I pull to run the water pump without causing short- or long-term problems? How many psi will the water lines in these trailers normally accept? Any specific pumps I should be looking at?



Thanks very much,

Doug