Skipper's Locker

Jabsco Par-Max 2 Freshwater Pump, 12V DC

Brand:
Jabsco
Part no:
31295-3512-3A

Where to buy

Specifications

Pressure
35 psi
Voltage
12V
Current draw
6 A
Port size
1/2" hosebarb

The Jabsco Par-Max 2 is a freshwater delivery pump on 12V DC. It is self-priming, has a sealed pressure switch for on-demand running, and uses a co-molded diaphragm. A bypass module reduces cycling for smoother flow, and a plastic housing protects the motor from corrosion. Quick connect ports make installation and servicing easier, and the pump can run dry without damage.

Our take

The Par-Max 2 can run dry without damage, which is a forgiving trait for a pump that also primes itself. Its sealed pressure switch runs it on demand, and a bypass module reduces cycling for smoother flow.

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.

Sources