Overview
The Liberty Pumps 405 is a specially designed commercial drain pump engineered for high-head, high-temperature situations. This pump features an oil-filled, hermetically sealed 1/2 hp motor for reliable efficiency. It handles water up to 180 °F (82 °C), making it ideal for laundry trays, utility sinks, dishwashers, and bar sinks installed below gravity drain lines. The unit arrives fully assembled and ready to install, making it a drop-in solution for commercial plumbing applications requiring automatic, unattended operation.
Key Features
- Corrosion-resistant polyolefin basin with molded-in connections for long-lasting durability
- QuickTree® Technology provides a separate access cover for easy switch inspection
- Maintenance-free bearings are permanently lubricated, and it features thermal overload protection for safe use
- Float switch equipped with a piggyback plug for temporary manual operation
- 10′ long cord for convenient use in most locations
- Can handle solids up to 3/8″ in size
Technical Specifications
- Horsepower: 1/2 HP
- Voltage: 115V
- Amperage: 16 Amps
- Phase: 1
- Discharge, Inlet, Vent: 2″ NPT
- Solids Handling: 3/8″
- Maximum Temperature: Up to 180°F
- Basin Capacity: 5.5 gallons
- Height: 14.1″
- Width: 13 3/4″, Depth: 13 3/4″
- Weight: 16 lbs
- Plug Type: NEMA 5-15P
- Warranty: 3 years manufacturer’s warranty
Typical Applications
These drain pumps are applicable to bar sinks, laundry trays, dehumidifiers, utility sinks and gray wastewater drainage below gravity lines. The Liberty Pumps 405 is particularly suited for multi-compartment sinks, commercial kitchens, laundries, and dishwashing stations where high-temperature drain water and reliable, hands-off operation are critical. Its compact design makes it fit in tight spaces where gravity drain installation is impractical.
Compatibility & Replacements
Compatible With
- Standard 2″ NPT discharge and inlet connections
- 115V single-phase electrical service
- Existing 2″ plumbing infrastructure
- Float switch manual override capability for manual pump operation
Replaces / Drop-In Replacement For
The Liberty Pumps 405 is a direct replacement for other 1/2 HP commercial drain pumps with 2″ NPT connections and 115V operation. Verify compatibility with your installation requirements before ordering.
Works With
- Standard 2″ NPT plumbing fittings and unions
- Check valves for backflow prevention
- Trap systems between fixtures and pump inlet
- Manual piggyback plug override for temporary operator control
