Skipper's Locker

Attwood Heavy-Duty 1700 GPH Bilge Pump

Brand:
Attwood
Part no:
4730-4

Where to buy

Specifications

Rated flow
1700 gal/h
Voltage
12V
Flow at stated head
1700 GPH at 0 ft head

Manuals

This is a 12V bilge pump from Attwood, rated at 1700 GPH at 0 ft of head. The maker gives it a separate shaft and motor compartment, which is meant to cut wear and extend pump life. It draws under 6 amps by the maker's figures, with a 5.7A fuse listed and a 36 inch wire supplied. Attwood positions it as a replacement for 2000 GPH rated pumps.

Our take

The 1700 GPH rating is quoted at 0 ft of head, so it describes open flow, not a pump working against a hose run. With a draw under 6 amps and a 5.7A fuse listed, check those two numbers against your wiring and battery.

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.

Sources