Jabsco Par-Max HD4 Freshwater Pump, 24V DC, 40 PSI
- Brand:
- Jabsco
- Part no:
- Q402J-115S-3A
Image: Go2Marine
Where to buy
View on Amazonpaid link
Specifications
- Pressure
- 40 psi
- Voltage
- 24V
- Current draw
- 5 A
- Port size
- 1/2 in hosebarb
The Jabsco Par-Max HD4 is a 24V DC freshwater delivery pump rated at 4 GPM and 40 PSI. It has two 1/2 inch straight hosebarb ports and a self-priming design. It can run dry without damage, and a sealed pressure switch provides on-demand operation. Maximum current draw is 5 A, and the listed fuse size is 10 A.
Our take
A 5 A maximum draw with a 10 A fuse size keeps the wiring for this 24V HD4 modest, while it still gives 4 GPM at 40 PSI. It can run dry without damage, which forgives an empty tank.
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.