Nemo Submersible Well Pumps are available with 12 VDC,
24 VDC, or 115 VAC/DC motors. Since the basic performance characteristics of all 3 voltages are virtually the same, selecting
a voltage most suitable for a specific application namely depends on the power source available and the distance between the
power source and the pump. Here are the advantages/disadvantages of each model:
THE NEMO 12 VDC PUMPS can be operated from any 12 VDC power source and requires just one 12 volt battery and/or one 12 volt
solar module, but requires relatively heavier gauge wire for long wire runs.
THE NEMO 24 VDC PUMPS normally requires two 12 volt batteries (connected in series) and/or two 12 volt modules (connected
in series), but the wire size can be of a proportionately lighter gauge than the heavier gauge wire required for 12 VDC pumps.
(Note that the Nemo 24 VDC Pump motor can also operate at 12 VDC, but at half the speed and consequently half the GPM output.....whereas
the 12 volt model has the same output as the 24 volt model.)
THE NEMO 115 VAC/DC PUMPS can operate from any 115 VAC power source (power grid, generator, inverter) and only needs relatively
light gauge wire for long wire runs, but to be solar powered it needs to have a small (150 watt minimum) DC to AC inverter
connected between the pump and the solar charged battery.
V1 to V2 TRANSITION NOTES:
Major design changes and a transition from the original Nemo Version 1 Submersible Well Pump
to the new Nemo Version 2 Submersible Well Pump were engineered to significantly upgrade our product. Although the original
Nemo V1 pumps have been very popular, most affordable, and stood the test of time over decades of worldwide use, we found
there was room for improvement. The two main factors that prompted the design changes were related to case materials and cooling
capacity. The V1, having an all metal aluminum case, was sometimes subject to objectionable levels of corrosion/oxidation
in some wells with a PH balance incompatible with aluminum. The second factor was that the V1 had a small dead air space between
the interior wall of the case and the exterior side of the motor which, however minor, somewhat diminished the cooling capacity
of the motor. With the new V2 case these factors are markedly alleviated; the PVC case is very tightly hydraulically bonded
to the motor with no dead air space to act as unwanted insulation, and the PVC V2 case is also impervious to corrosion and
oxidation. Using a high pressure construction technique on the V2, the main seal
junction between the Flojet pump motor and the Flojet pump head has also been maximally strengthened.