Basin system · Liberty Pumps

Liberty Pumps 404 Low-Profile Drain Pump

A short drain system for tight spaces

Updated October 2026

Quick verdict

Fits where nothing else will.

Strength
Preassembled and sealed.
Trade-off
Expensive.
Right buyer
Laundry under counters.
Horsepower
1/3 HP
Max flow (maker)
39 GPM
Max head / lift (maker)
20 ft
Voltage
115 V
Power source
Corded Electric
Product weight
13 lb
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Why it matters

The 404 is a factory-preassembled drain pump system only 11 in tall, for compact spaces like under counters or beside washers. It runs fully automatically from a 1/3 HP pump.

A molded rubber gasket gives a gas-tight seal, and a separate access cover lets you check the switch without opening the basin. It handles 3/8 in solids and is rated at about 39 GPM and 20 ft of head.

Who it's for, and who should skip it

Good fit if

  • Laundry rooms
  • Sinks below the drain line
  • Tight spaces

Look elsewhere if

  • Groundwater sump pits
  • Toilets (use a sewage system)
  • Tight budgets

Pros and cons

Pros

  • 11 in tall
  • Gas-tight
  • Switch access cover

Cons

  • Price
  • 3/8 in solids only
  • Small capacity

Limitations to weigh

  • Fit a check valve on the discharge so water in the pipe doesn't fall back into the pit after each cycle.
  • Grey water from sinks and washers can carry lint; clean the basin regularly.

Specifications

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

Product weight13 lbRetailer
Max flow (maker)39 GPMRetailer
Max head / lift (maker)20 ftRetailer
Voltage115 VRetailer
Horsepower1/3 HPRetailer
Model number3140788Retailer

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Final verdict

The pick when headroom is tight.

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

How tall is it?
About 11 in.
Is it automatic?
Yes, fully automatic.