Aluminum submersible · Liberty Pumps

Liberty Pumps 237 Sump Pump

A Liberty pump with a magnetic float

Updated October 2026

Quick verdict

A quality pump for narrow pits.

Strength
Magnetic float switch.
Trade-off
Aluminum, not cast iron.
Right buyer
Narrow basins.
Horsepower
1/3 HP
Max flow (maker)
44 GPM
Max head / lift (maker)
21 ft
Discharge
1-1/2"
Solids handling (maker)
3/8" solids
Voltage
115 V
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Why it matters

The 237 is Liberty's 1/3 HP pump with a deep-finned, powder-coated aluminum motor housing and a vortex impeller that passes 3/8 in solids.

Its vertical magnetic float switch has no mechanical arm to snag, which suits narrow basins. It has a 1-1/2 in discharge and a two-year warranty.

Who it's for, and who should skip it

Good fit if

  • Narrow basins
  • Average basements
  • Liberty owners

Look elsewhere if

  • Sewage or toilet waste
  • Draining pools or floors (a utility pump is cheaper)
  • Homes that need a backup but have only one pump

Pros and cons

Pros

  • Magnetic float
  • Vortex impeller
  • Narrow-pit friendly

Cons

  • Aluminum housing
  • 2-year warranty
  • Price

Limitations to weigh

  • Maximum head is where flow drops to zero; at your lift the pump moves less than its maximum flow. Size it with the sizing calculator.
  • Fit a check valve on the discharge so water in the pipe doesn't fall back into the pit after each cycle.

Specifications

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

MaterialAluminumRetailer
Dimensions (seller)9.6"L x 9.6"W x 10.5"HRetailer
Product weight11 lbRetailer
Max flow (maker)44 GPMRetailer
Max head / lift (maker)21 ftRetailer
Voltage115 VRetailer
Horsepower1/3 HPRetailer
Model number237Retailer
Warranty2 years from purchaseRetailer
Discharge1-1/2"Retailer
Solids handling (maker)3/8" solidsRetailer

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Final verdict

A tidy, reliable pump for tight pits.

Where to buy

Our links open this exact model's product page. Prices and stock change; check what's included before you order.

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

What kind of switch does it have?
A vertical magnetic float.
What is the housing?
Powder-coated aluminum.