Goulds 18GS30432C – 18 GPM, 3 HP, 230V 3-Phase, 4" Stainless Steel Submersible Well Pump

The Goulds 18GS30432C is a 3 HP, 18 GPM 4" submersible well pump from Xylem’s Goulds Water Technology GS line, built for continuous-duty residential and light-commercial groundwater supply from 4" or larger wells. This complete pump and 230V three-phase motor is built around a 19-stage pump end.

• Horsepower: 3 HP
• Stages: 19
• Recommended Flow Range: 6-28 GPM (Best Efficiency Point: 18 GPM)
• HP Range for This Series: 3/4-5 HP
• Discharge Connection: 1-1/4" NPT
• Minimum Well Diameter: 4"
• Motor: 230V, Three-Phase, 3450 RPM, 4" submersible motor
• Rotation: Counterclockwise (CCW), viewed from discharge end
• Approx. Pump-End Length / Weight: 24.1" / 15 lbs
• Wiring/Starting: Three-phase units require a separately supplied magnetic starter with Class 10 overload protection (not included).

Construction:

• Casing & Discharge Head: Polished AISI 304 stainless steel casing; cast AISI 303 stainless steel discharge head with two cast-in safety line loops
• Check Valve: Stainless steel check valve poppet/seat with FDA-compliant BUNA seal for quiet, abrasion-resistant operation
• Impeller: Noryl -- FDA compliant, corrosion-resistant, non-toxic
• Diffuser: Lexan -- FDA compliant, corrosion-resistant, non-toxic
• Bearing Spider (Upper): Noryl GFN2
• Bearings: Proprietary engineered polymer bearings, abrasion- and wear-resistant
• Motor Adapter: Cast AISI 303 stainless steel for rigid, accurate pump-to-motor alignment
• Sand Handling: Face-clearance, floating impeller stack design
• Serviceability: Left-hand threads, field-serviceable with common tools and readily available repair parts

Motor Features:

• Motor Construction: Corrosion-resistant stainless steel housing, stainless splined shaft, hermetically sealed windings, replaceable motor lead assembly, NEMA mounting dimensions
• Surge Protection: Built-in surge arrestor on single-phase motors through 5 HP
• Certifications: Pump/water end and motor tested to UL 778 / CAN/CSA C22.2; NSF/ANSI 61 Annex G (drinking water system components); NSF/ANSI 372 low-lead certified

Applications: Residential and light-commercial water wells, farm and irrigation wells, and deep-well water supply systems requiring dependable, sand-tolerant, continuous-duty submersible service.

Installation note: units have left-hand threads and are field-serviceable with common tools. Follow the pump manufacturer's wiring and grounding instructions; motors must be sized and protected per the specifications above.