Submersible utility · Little Giant

Little Giant 5-ASP 1/6 HP Automatic Utility Pump

A pro-grade automatic utility pump

Updated October 2026

Quick verdict

Automatic and built to last.

Strength
Cast aluminum and ball bearings.
Trade-off
Expensive.
Right buyer
Small pits and tanks.
Horsepower
1/6 HP
Max flow (maker)
25 GPM
Max head / lift (maker)
26 ft
Discharge
1" FNPT
Switch
Diaphragm switch
Housing
cast aluminum
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Why it matters

The 5-ASP has a piggyback diaphragm switch: it starts at 6 to 9 in of water and stops between 1 and 4 in. The piggyback plug also lets you run it manually.

It's epoxy-coated die-cast aluminum with an oil-free 1/6 HP PSC motor, upper and lower ball bearings and a triple-lip seal. Little Giant rates it at 1,500 GPH, 26 ft shutoff and 2.0 running amps.

Who it's for, and who should skip it

Good fit if

  • Small pits and tanks
  • Commercial and home transfer
  • Owners who want automatic

Look elsewhere if

  • Sewage
  • Large floods
  • Tight budgets

Pros and cons

Pros

  • Automatic switch
  • Ball bearings
  • Cast aluminum

Cons

  • Price
  • Low flow
  • Leaves 1 to 4 in

Limitations to weigh

  • Check your pit diameter against the switch: vertical floats fit narrow pits, tethered floats need room to swing.
  • Rated flow is at little or no lift; through a garden hose or up a stairwell, expect much less.

Specifications

Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.

MaterialEpoxy Coated Cast AluminumRetailer
Dimensions (seller)7.75"L x 4.29"W x 8.07"HRetailer
Product weight7 lbRetailer
Max flow (maker)25 GPMRetailer
Max head / lift (maker)26 ftRetailer
Voltage115 V ACRetailer
Horsepower1/6 HPRetailer
Model number505715Retailer
Discharge1" FNPTRetailer
SwitchDiaphragm switchRetailer
Housingcast aluminumRetailer

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Final verdict

A durable automatic pump for small jobs.

Where to buy

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Prices change often; the button shows today's price.

Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure

Questions buyers ask

When does it switch on?
At 6 to 9 in of water.
Can it run manually?
Yes, through the piggyback plug.