A.Y. McDonald 24000 Series - S-55 GPM High Flow Stainless Steel Submersible Pump, 1.5-10 HP
A.Y. McDonald 24000 Series High Flow S - 55 GPM performance curve: total head vs flow by horsepower, Pumps by Baker catalog p. 86
A.Y. McDonald 24000 Series - S-55 GPM High Flow Stainless Steel Submersible Pump, 1.5-10 HP
A.Y. McDonald 24000 Series High Flow S - 55 GPM performance curve: total head vs flow by horsepower, Pumps by Baker catalog p. 86

A.Y. McDonald 24000 Series S - 55 GPM Stainless Steel Submersible Pump

HP - Motor Dia: 5 HP - 4 in Motor
Voltage - Phase: 460V 3Ph
Model - Head: 24500S3Y - 250 ft at 55 GPM

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$4,308.99
SKU: 6630-205
Weight : 72.0 lb
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Description
A.Y. McDonald · Submersible Well Pump
24000 Series High Flow S - 55 GPM
Stainless Steel 4 in submersible pump on a Baker motor, 1 1/2 to 10 HP, 16 builds.
78-507 ft at 55 GPM
1 1/2-10 HP
230V 1Ph · 230V or 460V 3Ph
823 ft Max Head (Shut-off)
2 in NPT Discharge
Built-In Check Valve
Baker 4 in Stainless Steel Motor
Drinking Water ANSI/NSF 61
4 in Pump, 30.6-97.3 in L
38-106 lb Weight
What Ships and What It Needs to Run

Included: the pump end and Baker 4 in motor with leads, assembled as one complete pump, with the internal check valve and a grounded lead on the motor.

Two-wire builds: the controls are in the motor, so no control box is needed.

Three-wire single-phase builds: the control box is included.

Three-phase builds: the starter kit is included.

Drop cable and splice kit: sized to your setting depth and ordered separately.

Overview

The 24000 Series High Flow is Baker’s stainless steel 4 in submersible pump for 35 to 80 GPM, built in five flow classes: 35, 40, 55, 60 and 80 GPM, from 1 to 10 HP. Across the line it delivers up to 124 GPM and up to 1300 ft of head at 3450 rpm.

Each pump ships assembled on a Baker stainless steel motor. The discharge casting (2 in NPT), check valve, bowls, shell, screen, shaft, cable guard and NEMA motor bracket are stainless steel; the impellers are Noryl.

This listing is the S - 55 GPM class: 1 1/2 to 10 HP, 16 builds, two-wire up to 1 1/2 HP and three-wire up to 10 HP, all with a 2 in NPT discharge.

Genuine A.Y. McDonald equipment, factory-new in original packaging — sold and supported by Watermain Supply, an independent industrial supplier. Watermain Supply is an Authorized Stocking A.Y. McDonald and Baker Water Systems Distributor.
3-Year A.Y. McDonald Warranty

Covered for 3 years from the date of manufacture under A.Y. McDonald’s published terms for Baker submersible motors and assembled submersible pumps with pump ends up to 80 GPM.

Room to Grow

One pump per well. Need more head later? Step up in horsepower within the S - 55 GPM class. Need more flow? Move to a higher flow class of the 24000 Series High Flow, which runs to 80 GPM; every class uses the same 2 in NPT discharge, so the drop pipe connection stays the same.

Shared Specifications
Included Pump end, motor and leads; control box on three-wire single-phase builds; starter kit on three-phase builds
Discharge 2 in NPT (female)
Well size 4 in and larger
Check valve Built in
Motor Baker 4 in stainless steel submersible motor, NEMA 4 in flange, IP68, insulation class F
Motor temperature rating 95°F
Cooling flow past the motor 1.0 ft/sec at 95°F
Maximum starts 20 per hour
Maximum operating depth (motor) 984 ft
Voltage tolerance +6% / -10%
Pump energy index (PEI) 0.95
Certification Drinking Water ANSI/NSF 61
Frequency 60 Hz
App connection None; the pump runs from its own controls

Motor data: Pumps by Baker catalog (Sept 2025, rev 3/26), pp. 121-128.

Models & Performance — Will It Do What You Need?

Find your horsepower in the row, then read across. Total head is the lift from the pumping water level to the discharge, plus the pressure you want at the tank (2.31 ft for every PSI), plus friction in the drop pipe.

Total head in feet · curves end at 79.5–80 GPM

HP 0 GPM (Shut-off) 20 GPM 40 GPM 60 GPM 70 GPM
1 1/2 HP 138 ft 124 ft 103 ft 68 ft 45 ft
2 HP 194 ft 178 ft 145 ft 97 ft 65 ft
3 HP 249 ft 229 ft 186 ft 128 ft 93 ft
5 HP 420 ft 378 ft 316 ft 225 ft 161 ft
7 1/2 HP 626 ft 562 ft 464 ft 333 ft 239 ft
10 HP 823 ft 744 ft 643 ft 453 ft 317 ft

Read from the published curve in the Pumps by Baker catalog (Sept 2025, rev 3/26), p. 86, digitized and rounded down, at the flows nearest 20%, 50% and 75% of the curve’s 80.1 GPM end. 0 GPM is the printed shut-off. The last column is the last flow every curve reaches; the curve ends are named in the table title.

Output in GPM at 30 PSI (switch cut-in), by depth to water

HP 20 ft 30 ft 40 ft 100 ft 120 ft 160 ft 180 ft
1 1/2 HP 47.5 42.5 32.5 — — — —
2 HP 62 60 55 25 — — —
3 HP — — 66 46 38 17 —
5 HP — — — 68 66 58 55
7 1/2 HP — — — — 74 71 69
10 HP — — — — — 76 75

Output in GPM at 50 PSI (switch cut-out), by depth to water

HP 20 ft 30 ft 40 ft 100 ft 120 ft 160 ft 180 ft
1 1/2 HP — — — — — — —
2 HP 45 38 35 — — — —
3 HP 60 58 53 27 16 — —
5 HP — — 71 62 58 51 46
7 1/2 HP — — — 72 71 67 65
10 HP — — — 77 76 74 72

Output tables as printed in the Pumps by Baker catalog (Sept 2025, rev 3/26), pp. 85-86, at the 30 and 50 PSI rows. Riser-pipe friction is not included (manufacturer note): add it for long or small drop pipe. — marks a point A.Y. McDonald does not print for that horsepower.

Best operating range: the published curve shades the most efficient operating range for each model; the catalog prints no figures for it. The curve is in the image gallery.

Before You Buy — The Limits That Decide the Fit
Well size 4 in casing and larger
Power Two-wire builds need no control box (the controls are in the motor); three-wire single-phase builds include their control box; three-phase builds include their starter kit. Match voltage and phase to your service; single-phase and three-phase builds are not interchangeable
Water temperature Motor rated to 95°F
Motor cooling 1.0 ft/sec of water flow past the motor at 95°F
Starts Up to 20 starts per hour
Setting depth Motor rated to 984 ft operating depth
Riser friction Not included in the output tables; add it before choosing
Application Water wells; the manufacturer excludes use in swimming areas
Pairing One pump per well
Materials of Construction
Discharge head Stainless steel 304, 2 in NPT discharge
Motor adapter Stainless steel 304, NEMA standard
Check valve Stainless steel 304
External shell Stainless steel 304, polished
Impellers Noryl
Diffusers Polycarbonate
Bearing Polyacetal
Shaft coupling Stainless steel 304, NEMA standard
Strainer Stainless steel 304
Shaft Stainless steel 304
Cable guard Stainless steel 304

Materials as printed by the manufacturer. Source: Pumps by Baker catalog (Sept 2025, rev 3/26), pp. 79-80.

For engineering-led sizing and selection support or a factory submittal, email sales@watermainsupply.com or call 1-888.510.4036.
© Watermain Supply — A division of E4 Industrial LLC
Data Sheet
Pumps by Baker 24000 Series Guide
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Product videos are being added to this listing. For a walkthrough in the meantime, email sales@watermainsupply.com.

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