Goulds WW0511AC, Model 3872 – Submersible Sewage Pump, 1/2 HP, 115 Volts, 1 Phase, 2" NPT Discharge, 75 GPM Max, Piggyback/Wide-Angle Float Switch, 20 ft Cord

The Goulds WW0511AC is a 1/2 HP, 115-volt, single-phase submersible sewage pump (Model 3872), equipped with a piggyback/wide-angle mechanical float switch for automatic operation. It is built for continuous submerged operation, handling solids up to 2" in diameter through a 2" NPT discharge connection.

• Horsepower: 1/2 HP
• Voltage: 115V, Single-Phase
• Amps: 13
• Minimum Circuit Breaker: 20 A
• Maximum Capacity: 75 GPM
• Maximum Total Head: 18 ft TDH
• Discharge Connection: 2" NPT
• Maximum Solids Handling: 2"
• Minimum Basin Diameter: 18"
• Power Cord Length: 20 ft
• Float Switch Level (On / Off): 15" / 9"
• Shipping Weight: 23 lbs
• Maximum Liquid Temperature: 104°F (40°C) continuous

Construction & Features:

• Impeller: Glass-filled thermoplastic Full-Vortex design with pump-out vanes for mechanical seal protection
• Casing & Base: Rugged glass-filled thermoplastic, superior strength and corrosion resistance
• Motor Housing: Cast iron for efficient heat transfer, strength, and durability
• Motor Cover: Thermoplastic with integral handle and float switch attachment points
• Bearings: Upper and lower heavy duty ball bearing construction
• Motor: Fully submerged in high-grade turbine oil for lubrication and heat transfer; capable of running dry without damage
• Mechanical Seal: Carbon-rotary / ceramic-stationary, BUNA-N elastomers
• Fasteners: 300 series stainless steel

Applications: Residential sewage systems, dewatering, and water transfer -- anywhere waste or drainage must be disposed of quickly, quietly, and efficiently.

Installation note: this pump must remain fully submerged during operation for proper motor cooling and lubrication. Wiring must be performed by a qualified electrician in accordance with local codes and the National Electrical Code, using a dedicated, properly grounded circuit sized to the minimum circuit breaker shown above.