Liberty Pumps SJ10A Series SumpJet Water-Powered Backup Pump with Indoor Alarm

Liberty Pumps SJ10A SumpJet Backup Pump Alarm Included

The Liberty SJ10A is a water-powered backup sump pump designed to keep basements and crawlspaces protected during power outages. Operating entirely on municipal water pressure, it requires no electricity or batteries. This model includes a factory-installed indoor high-water alarm, providing immediate local notification of rising water levels.

Key Features & Benefits

• Water-Powered Backup — operates off municipal water pressure (20–100 psi), removing sump water automatically when primary pumps fail.
• Indoor High-Water Alarm — alerts occupants locally when the pump engages or when water rises above normal levels.
• Efficient Operation — removes approximately 2 gallons of sump water for every 1 gallon of municipal water used.
• Automatic & Fully Assembled — ready for installation with float switch, inlet, and discharge piping.
• 1½" Discharge / ¾" Water Inlet — compatible with standard sump and municipal plumbing setups.
• Reliable Construction — durable thermoplastic body designed for long life and continuous duty.

Specifications

What’s Included

• SJ10A Sump Jet water-powered backup pump
• Indoor high-water alarm
• Float switch assembly
• ¾" SharkBite-style water inlet fitting
• Check valve and fittings
• Installation guide

Applications

• Backup sump pump protection during power outages
• Basements, crawlspaces, and utility pits with municipal water service
• Properties needing immediate on-site alerting without wireless connectivity

Note: Performance curves vary by model variant — check Liberty’s specification sheet for exact head vs flow data. Always follow proper installation guidelines and check valve requirements.

The SJ10 requires an uninterrupted water source to operate. If you have a well pump, the SJ10 will not operate during power outages.

Construction: PVC
Max Fluid Temp: 130 F
Inlet Connection: 3/4" Sharkbite fitting
Discharge Size: 1-1/2"

Height: 21.6"
Width: 5.1"
Weight: 3.5 lbs
Inlet Connection: 3/4" Sharkbite fitting
Discharge Size: 1-1/2"