Jabsco Par-Max 3 Freshwater Pump, 12V DC, 40 PSI
- Brand:
- Jabsco
- Part no:
- 31395-4012-3A
Image: Fisheries Supply
Where to buy
Specifications
- Pressure
- 40 psi
- Voltage
- 12V
- Current draw
- 6.2 A
- Port size
- 2 x 1/2" Straight Hosebarb
The Jabsco Par-Max 3 is a 12V DC freshwater delivery pump rated at 3 GPM and 40 PSI. A co-molded diaphragm and sealed pressure switch let it run on demand, and it is self-priming. This model has a plastic housing that guards the motor against corrosion. It can run dry without damage, includes an integrated bypass module for smoother flow, and draws up to 6.2 amps.
Our take
The Par-Max 3 has a plastic housing that protects the motor from corrosion, and a 6.2 amp maximum draw gives you a clear number to plan 12V wiring around. The bypass module reduces cycling, so flow at the tap should be smoother.
From our buying guide
Size a freshwater pump by the outlets that must run at once. Jabsco's rule of thumb is 1 GPM per outlet, and the listed flow is open flow, which falls as pressure rises.
Check before you buy:
- The data sheet shows flow at pressure. One Shurflo gives 4.0 GPM at 0 psi and 2.0 GPM at 40 psi.
- You have an inlet strainer, which Jabsco says is required in every freshwater pump installation.
- An accumulator suits the pump. Jabsco says one cuts cycling on a pressure-switch system, and not to use its accumulators with variable-speed pumps.