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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.
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 M - 25 GPM class: 1/2 to 5 HP, 21 builds, two-wire up to 1 1/2 HP and three-wire up to 5 HP, all with a 1 1/4 in NPT discharge.
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).
One pump per well. Need more head later? Step up in horsepower within the M - 25 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.
| 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.
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 32–39.5 GPM
| HP | 0 GPM (Shut-off) | 7.5 GPM | 20 GPM | 27.5 GPM | 30 GPM |
|---|---|---|---|---|---|
| 1/2 HP | 122 ft | 109 ft | 80 ft | 56 ft | 46 ft |
| 3/4 HP | 152 ft | 138 ft | 107 ft | 73 ft | 61 ft |
| 1 HP | 219 ft | 202 ft | 150 ft | 113 ft | 97 ft |
| 1 1/2 HP | 282 ft | 259 ft | 204 ft | 159 ft | 140 ft |
| 2 HP | 374 ft | 342 ft | 263 ft | 193 ft | 163 ft |
| 3 HP | 507 ft | 469 ft | 362 ft | 266 ft | 226 ft |
| 5 HP | 796 ft | 736 ft | 576 ft | 426 ft | 366 ft |
Read from the published curve in the Pumps by Baker catalog (Sept 2025, rev 3/26), p. 64, digitized and rounded down, at the flows nearest 20%, 50% and 75% of the curve’s 39.9 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 | 25 ft | 50 ft | 100 ft | 150 ft | 200 ft | 250 ft | 300 ft |
|---|---|---|---|---|---|---|---|
| 1/2 HP | 15.93 | 2.93 | — | — | — | — | — |
| 3/4 HP | 23.22 | 16.71 | — | — | — | — | — |
| 1 HP | 29.81 | 26.22 | 17.35 | — | — | — | — |
| 1 1/2 HP | 33.65 | 31.08 | 25.26 | 17.91 | 6.06 | — | — |
| 2 HP | — | 33.26 | 29.37 | 24.97 | 19.79 | 13.16 | 1.33 |
| 3 HP | — | 35.85 | 33.16 | 30.28 | 27.12 | 23.62 | 19.61 |
| 5 HP | — | 38.3 | 36.8 | 35.2 | 33.5 | 31.7 | 29.8 |
Output in GPM at 50 PSI (switch cut-out), by depth to water
| HP | 25 ft | 50 ft | 100 ft | 150 ft | 200 ft | 250 ft | 300 ft |
|---|---|---|---|---|---|---|---|
| 1/2 HP | — | — | — | — | — | — | — |
| 3/4 HP | 8.81 | — | — | — | — | — | — |
| 1 HP | 22.80 | 18.14 | 2.61 | — | — | — | — |
| 1 1/2 HP | 28.74 | 25.74 | 18.56 | 7.42 | — | — | — |
| 2 HP | — | 29.68 | 25.33 | 20.23 | 13.75 | 2.92 | — |
| 3 HP | — | 33.38 | 30.50 | 27.37 | 23.90 | 19.94 | 15.19 |
| 5 HP | — | 36.9 | 35.3 | 33.6 | 31.9 | 30.0 | 28.0 |
Output tables as printed in the Pumps by Baker catalog (Sept 2025, rev 3/26), pp. 63-64, 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.
| 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 |
| 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.
Product videos are being added to this listing. For a walkthrough in the meantime, email sales@watermainsupply.com.
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