A.Y. McDonald 23000 Series J - 5 GPM 4" Stainless Steel Submersible Pump, 1/2-1.5 HP
A.Y. McDonald 23000 Series J - 5 GPM performance curve: total head vs flow by horsepower, Pumps by Baker catalog p. 54
A.Y. McDonald 23000 Series J - 5 GPM 4" Stainless Steel Submersible Pump, 1/2-1.5 HP
A.Y. McDonald 23000 Series J - 5 GPM performance curve: total head vs flow by horsepower, Pumps by Baker catalog p. 54

A.Y. McDonald 23000 Series J - 5 GPM 4 in Stainless Steel Submersible Pump

HP - Motor Dia: 1/2 HP - 4 in Motor
Voltage - Phase: 115V 1Ph 2-Wire
Model - Head: 23050J2A - 251 ft at 5 GPM

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$1,115.32
SKU: 6622-038
Weight : 27.6 lb
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Description
A.Y. McDonald · Submersible Well Pump
23000 Series J - 5 GPM
Domestic Stainless Steel 4 in submersible pump on a Baker motor, 1/2 to 1 1/2 HP, 11 builds.
251-582 ft at 5 GPM
1/2-1 1/2 HP
115V or 230V 1Ph · 230V 3Ph
829 ft Max Head (Shut-off)
1 1/4 in NPT Discharge
Built-In Check Valve
Baker 4 in Stainless Steel Motor
3 3/4 in Dia x 27.2-50 in L
27.6-48.4 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 23000 Series is Baker’s domestic stainless steel 4 in submersible pump, built in six flow classes: 5, 7, 10, 15, 20 and 25 GPM. Each pump ships assembled on a Baker stainless steel motor, with a 300 series stainless steel discharge, Baker’s Diamond Design check valve, and a stainless steel shaft, shell and motor bracket.

The diffusers use Baker’s captured stack design, with sand notches that keep sand moving through the pump. Each pump is individually tested after assembly and stamped with the tester’s mark.

This listing is the J - 5 GPM class: 1/2 to 1 1/2 HP, 11 builds, two-wire up to 1 1/2 HP and three-wire up to 1 1/2 HP, all with a 1 1/4 in NPT discharge.

  • Discharge — 300 series stainless steel, easy-wrench design with built-in safety eye; threads into the shell.
  • Check valve — Baker Diamond Design, easy-out for service.
  • Discharge bearing — rubber around the stainless steel shaft; self-lubricating.
  • Diffusers — polycarbonate, corrosion and abrasion resistant, built for sand handling.
  • Impellers — glass bead acetal.
  • Shaft — 7/16 in 300 series stainless steel, hex drive, each one measured for straightness.
  • Shell — heavy stainless steel, threaded at both ends for field service.
  • Cable guard — stainless steel; angled top keeps the leads in place.
  • Motor bracket — stainless steel.
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.
5-Year A.Y. McDonald Warranty in Potable Water

Covered for 5 years from the date of manufacture in potable water applications, and 3 years from the date of manufacture in other applications, under A.Y. McDonald’s published terms for Baker submersible motors and assembled submersible pumps (pump ends up to 25 GPM for the 5-year term, up to 80 GPM for the 3-year term).

Room to Grow

One pump per well. Need more head later? Step up in horsepower within the J - 5 GPM class. Need more flow? Move to a higher flow class of the 23000 Series, which runs to 25 GPM; every class uses the same 1 1/4 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 1 1/4 in NPT (female)
Pump diameter 3 3/4 in with cable guard
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%
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 12–12.5 GPM

HP 0 GPM (Shut-off) 3 GPM 6 GPM 9 GPM 12 GPM
1/2 HP 361 ft 298 ft 223 ft 131 ft 19 ft
3/4 HP 512 ft 435 ft 324 ft 184 ft 32 ft
1 HP 649 ft 542 ft 392 ft 214 ft 28 ft
1 1/2 HP 829 ft 702 ft 510 ft 274 ft 44 ft

Read from the published curve in the Pumps by Baker catalog (Sept 2025, rev 3/26), p. 54, digitized and rounded down, at the flows nearest 20%, 50% and 75% of the curve’s 12.6 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 50 ft 100 ft 150 ft 200 ft 250 ft 300 ft 350 ft
1/2 HP 9.2 7.8 6.1 4.3 2.1 — —
3/4 HP 10.3 9.3 8.3 7.2 6.1 4.9 3.5
1 HP 10.6 9.8 9.0 8.1 7.3 6.4 5.5
1 1/2 HP 11.1 10.4 9.7 9.1 8.5 7.8 7.2

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

HP 50 ft 100 ft 150 ft 200 ft 250 ft 300 ft 350 ft
1/2 HP 7.9 6.3 4.4 2.3 — — —
3/4 HP 9.4 8.3 7.3 6.2 4.9 3.6 2.0
1 HP 9.9 9.0 8.2 7.3 6.4 5.5 4.6
1 1/2 HP 10.5 9.8 9.1 8.5 7.9 7.2 6.6

Output tables as printed in the Pumps by Baker catalog (Sept 2025, rev 3/26), pp. 53-54, 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; the pump is 3 3/4 in diameter with the cable guard
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 300 series stainless steel, easy-wrench design with built-in safety eye; threads into the shell
Check valve Baker Diamond Design, easy-out for service
Discharge bearing Rubber around the stainless steel shaft; self-lubricating
Diffusers Polycarbonate, corrosion and abrasion resistant, built for sand handling
Impellers Glass bead acetal
Shaft 7/16 in 300 series stainless steel, hex drive, each one measured for straightness
Shell Heavy stainless steel, threaded at both ends for field service
Cable guard Stainless steel; angled top keeps the leads in place
Motor bracket Stainless steel

Construction as described by the manufacturer. Source: Pumps by Baker catalog (Sept 2025, rev 3/26), pp. 51-52.

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 23000 Series Guide
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