Domestic DC Water Pumps Price GPH
Can Direct Current (DC) boat "bilge pumps" move your household water economically?
Bilge pumps specialize in:
- High-volume (gallons per hour, gph)
- Little head/lift
Rule of thumb = A DC bilge pump can lift half its rated gph a distance of 1 foot per 100gph of its rating (caution: very rough estimate, based on a first few consumer reports and manufacturer notes, subject to amendment).
Supply (pump cost and performance estimate):
$10-20 = 360-500gph = 3-5ft @ 150-250gph
$25-50 = 1,000gph = 10ft @ 500gph (600gph in one report)
Demand = 120gph (2gpm) for today's faucets and shower heads, and 80-100 gallons per person per day (20-150 at the extremes).
- Raise water to sink level, shower level, or 2nd-story level, depending upon size of pump.
- Daisy-chain pumps like canal locks.
- Use for basement sump pump, shop, garage, shed, pool cabana, RV, camping, cabin, or off-grid home.
- Control with a manual start and stop toggle switch, manual "momentary on" switch, or an automatic float switch.
These cheap bilge pumps can last years. Even some other pumps that cost over $100 have diaphragms that might need replacement after years. Multiple cheap pumps provide mutual backups and swapping flexibility. Heck, you could keep a basket of the $10 Wal-Mart bilge pumps.