558551 W5G05S8-21P

Little Giant offers a complete line of 4" submersible pump products designed for pressured water transfer from wells, cisterns, ponds, lakes, or streams. These pumps are constructed of durable, abrasion-resistant materials and reach peak performance when wholly submerged.

Item: 558551
Model: W5G05S8-21P


HP 1/2 hp
Frequency 60 Hz
Phase Single-Phase
Amps – Maximum Load 12 A
Volts 115 VAC
Voltage Tolerance -10.0% / +10.0%
Wires 2-Wire
Motor Type Encapsulated
Continuous Duty Yes
Efficiency Service Factor Load 62.00 %
Lead Retainer Method Lead Jam Nut
Rated Flow Rate - 60Hz 5 gpm / 300 gph
Shut-Off 312 ft
Shut Off Height - 60Hz 312 ft
Stages 8
Motor Ambient Temperature Rating Nominal 86 °F


Max Fluid Temperature 120 °F

Materials of Construction

Pump Body Material AISI 304 Stainless Steel
Discharge Head Material Thermoplastic
Impeller Material Acetal
Motor Bracket Material Thermoplastic
Check Valve Yes
Discharge Material Thermoplastic
Intake Screen Material Thermoplastic
Thrust Bearing Type Kingsbury
Lead Insulation Material XLPE
Cable Guard Material Thermoplastic


Discharge Thread FNPT
Discharge 1.25 "
Product Length 23.49 "
Diameter with Cable Guard 3.9 "
Motor Length 9.53 "
Pump Length 13.98 "
Product Weight 26 lb
Product Weight w/ Pack 26 lb
Carton Length 28 "
Carton Width 4.38 "
Carton Height 4.38 "


Motor Component Part Number 2445049004GS
Pump Component Part Number 94310501
Drinking Water Agency Approvals ANSI/NSF Standard 61
Electrical Agency Approvals UL 778
Standard Warranty 12 Mo. from Date of Install / 24 Mo. from Date of Manufacturing