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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 26000 Series is Baker’s all stainless steel 4 in submersible pump, built in six flow classes: 5, 10, 18, 25, 40 and 70 GPM, from 1/2 to 10 HP. Each pump ships assembled on a Baker motor, with a stainless steel discharge head and built-in check valve, stainless steel impellers and diffusers, and a stainless steel suction screen.
The shaft is 431 stainless steel and every other metal part is 304 stainless steel. Mounting follows the NEMA standard.
This listing is the M - 25 GPM class: 1/2 to 7 1/2 HP, 14 builds, two-wire up to 1 1/2 HP and three-wire up to 5 HP, plus a three-phase 7 1/2 HP build (230V), all with a 1 1/2 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: the same 1 1/2 in NPT discharge carries from 1/2 to 7 1/2 HP. For more flow, the 26000 Series runs to 70 GPM.
| Included | Pump end, motor and leads; control box on three-wire single-phase builds; starter kit on three-phase builds |
| Discharge | 1 1/2 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 end liquid temperature | Up to 140°F (60°C) |
| Pumped liquids | Clean, non-corrosive and non-abrasive |
| Pump energy index (PEI) | 0.86 |
| Certification | CSA and 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.
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 38 GPM
| HP | 0 GPM (Shut-off) | 7.5 GPM | 20 GPM | 27.5 GPM | 37.5 GPM |
|---|---|---|---|---|---|
| 1/2 HP | 120 ft | 118 ft | 95 ft | 75 ft | 38 ft |
| 3/4 HP | 150 ft | 142 ft | 120 ft | 91 ft | 46 ft |
| 1 HP | 210 ft | 196 ft | 163 ft | 133 ft | 62 ft |
| 1 1/2 HP | 270 ft | 259 ft | 211 ft | 169 ft | 84 ft |
| 2 HP | 331 ft | 308 ft | 246 ft | 200 ft | 95 ft |
| 3 HP | 450 ft | 419 ft | 344 ft | 281 ft | 147 ft |
| 5 HP | 777 ft | 721 ft | 602 ft | 485 ft | 256 ft |
| 7 1/2 HP | 1168 ft | 1080 ft | 901 ft | 732 ft | 381 ft |
Read from the published curve in the Pumps by Baker catalog (Sept 2025, rev 3/26), p. 114, digitized and rounded down, at the flows nearest 20%, 50% and 75% of the curve’s 38.1 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 · 1/2–2 HP
| HP | 20 ft | 40 ft | 60 ft | 80 ft | 100 ft | 120 ft | 140 ft |
|---|---|---|---|---|---|---|---|
| 1/2 HP | 22.4 | 9.7 | — | — | — | — | — |
| 3/4 HP | 28.4 | 22.6 | 14.8 | — | — | — | — |
| 1 HP | — | 31.8 | 28.1 | 23.8 | 17.6 | 8.9 | — |
| 1 1/2 HP | — | — | 33.3 | 30.6 | 27.7 | 24.3 | 19.9 |
| 2 HP | — | — | — | 33.4 | 31.2 | 28.7 | 26.0 |
Output in GPM at 50 PSI (switch cut-out), by depth to water · 1/2–2 HP
| HP | 20 ft | 40 ft | 60 ft | 80 ft | 100 ft | 120 ft | 140 ft |
|---|---|---|---|---|---|---|---|
| 1/2 HP | — | — | — | — | — | — | — |
| 3/4 HP | 11.4 | — | — | — | — | — | — |
| 1 HP | 25.9 | 22.2 | 15.2 | — | — | — | — |
| 1 1/2 HP | 32.5 | 29.7 | 26.7 | 23.1 | 18.3 | 11.8 | — |
| 2 HP | — | 32.8 | 30.5 | 27.9 | 25.1 | 22.0 | 18.2 |
Output in GPM at 30 PSI (switch cut-in), by depth to water · 3–7 1/2 HP
| HP | 140 ft | 260 ft | 280 ft | 500 ft | 540 ft | 580 ft | 620 ft |
|---|---|---|---|---|---|---|---|
| 3 HP | 33.8 | 22.7 | 19.9 | — | — | — | — |
| 5 HP | — | — | — | 22.8 | 19.5 | 15.5 | 10.6 |
| 7 1/2 HP | — | — | — | 33.0 | 31.8 | 30.5 | 29.2 |
Output in GPM at 50 PSI (switch cut-out), by depth to water · 3–7 1/2 HP
| HP | 140 ft | 260 ft | 280 ft | 500 ft | 540 ft | 580 ft | 620 ft |
|---|---|---|---|---|---|---|---|
| 3 HP | 30.0 | 15.3 | 11.1 | — | — | — | — |
| 5 HP | — | 33.2 | 32.3 | 18.9 | 14.8 | 9.8 | — |
| 7 1/2 HP | — | — | — | 31.6 | 30.3 | 29.0 | 27.6 |
Output tables as printed in the Pumps by Baker catalog (Sept 2025, rev 3/26), pp. 113-114, 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 |
| 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; pump end rated to 140°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 |
| Pumped liquids | Clean, non-corrosive and non-abrasive |
| Application | Water wells; the manufacturer excludes use in swimming areas |
| Pairing | One pump per well |
| Shaft | Stainless steel 431 |
| All other metal parts | Stainless steel 304 |
| Impellers and diffusers | Stainless steel |
| Discharge head and check valve | Stainless steel |
| Suction screen | Stainless steel |
| Shaft bearings | High quality shaft bearings (per the manufacturer) |
Materials as printed by the manufacturer. Source: Pumps by Baker catalog (Sept 2025, rev 3/26), pp. 105-106.
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