Johnson Pump Proline Bilge Pump 500 GPH (22502)
- Brand:
- Johnson Pump
- Part no:
- 22502
Image: Wholesale Marine
Where to buy
Specifications
- Rated flow
- 500 gal/h
- Voltage
- 12V
- Current draw
- 2.5 A
- Flow at stated head
- 525 GPH at 3 ft head
The 22502 is the 500 GPH Proline bilge pump from Johnson Pump. The maker lists 525 GPH at a 3 ft head and 630 GPH straight, on 2.5 amps. It is fully submersible and ignition-protected. The shaft is 316 stainless steel and the housing is marine-grade. A .75-inch hose barb with an anti-clog design takes the discharge, and Johnson Pump backs the pump with a 3-year warranty.
Our take
The 22502 draws 2.5 amps and is listed at 525 GPH against a 3 ft head, versus 630 GPH straight, so the maker's own numbers show roughly what a little lift costs in flow.
From our buying guide
Rule and Johnson both say their bilge pumps are not intended for damage control. Flow falls as the discharge head rises, and the length of the hose, its bends and any check valve reduce it further.
Check before you buy:
- The maker's own table shows the flow at head, since how much a pump loses depends on the model.
- An automatic pump also has a manual switch, which ABYC's voluntary 2005 standard calls for.
- You'll fuse it to the maker's figure.