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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.
Drop cable and splice kit: sized to your setting depth and ordered separately.
The 25000 Series is Baker’s 4 in submersible pump with a thermoplastic (Noryl) discharge head, built in six flow classes: 5, 7, 10, 15, 20 and 25 GPM, from 1/2 to 2 HP. Each pump ships assembled on a Baker stainless steel motor, with a removable check valve, stainless steel bowls, shell and shaft, and grounded leads that meet the National Electrical Code.
This listing is the L - 15 GPM class: 1/2 to 1 1/2 HP, 10 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.
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 L - 15 GPM class. Need more flow? Move to a higher flow class of the 25000 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 |
| 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 24.5 GPM
| HP | 0 GPM (Shut-off) | 5 GPM | 12.5 GPM | 17.5 GPM | 22.5 GPM |
|---|---|---|---|---|---|
| 1/2 HP | 152 ft | 142 ft | 110 ft | 73 ft | 23 ft |
| 3/4 HP | 211 ft | 200 ft | 156 ft | 103 ft | 33 ft |
| 1 HP | 299 ft | 286 ft | 223 ft | 150 ft | 50 ft |
| 1 1/2 HP | 367 ft | 351 ft | 274 ft | 183 ft | 61 ft |
Read from the published curve in the Pumps by Baker catalog (Sept 2025, rev 3/26), p. 100, digitized and rounded down, at the flows nearest 20%, 50% and 75% of the curve’s 24.5 GPM end. 0 GPM is the printed shut-off. For the 1/2 HP curve, the published curve and A.Y. McDonald’s printed output tables disagree by about 17 ft on average; the head figures are read from the curve, and the output tables below are the printed figures. 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 | 75 ft | 100 ft | 125 ft | 150 ft | 175 ft |
|---|---|---|---|---|---|---|---|
| 1/2 HP | 15.4 | 11.7 | — | 9.1 | 6.1 | — | — |
| 3/4 HP | 18.6 | 16.5 | 14.2 | 11.3 | 7.3 | — | — |
| 1 HP | 20.6 | 19.4 | 18.0 | — | 14.9 | 13.1 | 10.9 |
| 1 1/2 HP | 21.4 | 20.4 | 19.4 | 18.3 | 17.1 | 15.8 | 14.5 |
Output in GPM at 50 PSI (switch cut-out), by depth to water
| HP | 25 ft | 50 ft | 75 ft | 100 ft | 125 ft | 150 ft | 175 ft |
|---|---|---|---|---|---|---|---|
| 1/2 HP | — | — | 6.6 | — | — | — | — |
| 3/4 HP | 14.6 | 11.8 | 8.1 | — | — | — | — |
| 1 HP | 18.2 | 16.8 | 15.2 | 13.4 | 11.3 | 8.7 | 4.7 |
| 1 1/2 HP | 19.5 | 18.4 | 17.3 | 16.0 | 14.7 | 13.2 | 11.5 |
Output tables as printed in the Pumps by Baker catalog (Sept 2025, rev 3/26), p. 100, 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. Left blank as apparent misprints (printed out of sequence; confirm with the factory): 1/2 HP, 30 PSI, 75 ft: printed 5.8; 1/2 HP, 50 PSI, 25 ft: printed 7.0; 1/2 HP, 50 PSI, 50 ft: printed 9.5; 1 HP, 30 PSI, 100 ft: printed 6.6.
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. 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 head | Noryl, 1 1/4 in NPT thread |
| Motor adapter | Noryl, NEMA standard |
| Check valve | POM, removable |
| 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. 91-92.
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