PART #5 OF 8
JUST PICK ONE FOR DOG'S SAKE
If you're ultimately confused or overwhelmed by the choices, I might simply recommend either a Valterra or Lippert pump, both good choices. Not because they're better than the competition – they're likely not – but simply because both firms offer only a single, one-size-fits-all, semi-universal 12 volt RV/boat pump. So an easy choice! The Shurflo and Flojet pumps are good too, and they both offer various pump models. Choosing from these four below based on lowest price is not a bad approach. If you're into preventive repairs and stumble across a fire sale price in an Ebay auction, and your pump is 10 years old, you might consider a PREVENTIVE replacement so a future vacation isn't ruined. Feel free to disagree – that's admittedly a subjective idea from me, and my Shurflo did last a long 16 years.
Regarding the data below, note that pump labels and manufacturers' literature sometimes have modestly conflicting data, especially regarding psi and RV fuse amperage. I suggest using the pump motor label as the "bible."
VALTERRA HYDROMAX
-One pump model offered
-3.0 gpm flow
-55 psi max pressure
-7.5 amps max draw
-10 amps or higher RV pump fuse required
-Bypass valve to reduce cycling and pulsation
-Plumbing strainer and connectors provided
-Can run dry without damage
-2 year warranty
LIPPERT FLOW MAX
-One pump model offered, although specs can modestly vary
-3.0 gpm flow
-50 psi max pressure
-8 to 9.5 amps max draw
-10 amps or higher RV pump fuse required
-Note that Lippert variation #DS-01230-D2 may state a 15 amp fuse, deferring to an unstated electrical code. But all Lippert pumps appear to use no more than 9.5 amps, and many of their 9.5 amp pumps explicitly call for a 10 amp RV fuse. Therefore it appears that ANY Lippert pump can likely get by with a common 10 amp RV fuse, even if it says “15 amp fuse” on the pump label.
-Plumbing strainer and connectors provided
-5/10 minute duty cycle – 5 min full flow, 10 min cooldown (see below)
-Designed to survive freezing
-Can run dry without damage
-2 year warranty
FLOJET
-Several pump models available
-Pump #R3526144D (or #03526-144) is popular
-2.9 gpm flow
-50 psi max pressure
-5.2 to 7.5 amps max draw
-10 amps or higher RV pump fuse required
-Bypass valve to reduce cycling and pulsation
-Plumbing strainer and connectors provided, proprietary o-ring style
-Unique 58 mm x 81 mm mounting hole spacing
-Can run dry without damage
-2 year warranty
SHURFLO
-Several pump models available
-Pump #4008-101-A65 is popular
-A65 suffix is OEM, E65 suffix is aftermarket, same pump
-3.0 gpm flow
-55 psi max pressure
-7.5 amps max draw
-10 amps or higher RV pump fuse required
-Bypass valve to reduce cycling and pulsation
-No plumbing strainer or connectors provided, so extra $$, search online for “Shurflo NPT”
-Can mount in any position including motor down
-Can run dry without damage
-2 year warranty
