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Baker Submersible Pumps, Ends, Motors
A.Y. McDonald Pumptec with Remote Reading - 1/3 HP
A.Y. McDonald
A.Y. McDonald Pumptec with Remote Reading - 1/3 HP
- Price
- $534.29
A.Y. McDonald AutoPAC Q - 60 GPM - 24000 Series, 1.5-5 HP
A.Y. McDonald
A.Y. McDonald AutoPAC Q - 60 GPM - 24000 Series, 1.5-5 HP
- Price
- From $3,206.42
A.Y. McDonald 24000 Series P - 20 GPM 4" Stainless Steel Submersible Pump with Motor & Leads, 1/2-5 HP
A.Y. McDonald
A.Y. McDonald 24000 Series P - 20 GPM 4" Stainless Steel Submersible Pump with Motor & Leads, 1/2-5 HP
- Price
- From $1,225.58
A.Y. McDonald Bottom Suction Cistern Submersible Pump with Motor & Leads - 2 Wire, 1/2-3/4 HP
A.Y. McDonald
A.Y. McDonald Bottom Suction Cistern Submersible Pump with Motor & Leads - 2 Wire, 1/2-3/4 HP
- Price
- From $819.86
A.Y. McDonald Contactor - Single Phase 230V Control Box Component, 1.5-15 HP
A.Y. McDonald
A.Y. McDonald Contactor - Single Phase 230V Control Box Component, 1.5-15 HP
- Price
- From $220.50
A.Y. McDonald Control Relay - Single Phase 230V Control Box Component, 1.5-15 HP
A.Y. McDonald
A.Y. McDonald Control Relay - Single Phase 230V Control Box Component, 1.5-15 HP
- Price
- From $141.75
A.Y. McDonald Running Overload - Single Phase 230V Control Box Component, 1.5-15 HP
A.Y. McDonald
A.Y. McDonald Running Overload - Single Phase 230V Control Box Component, 1.5-15 HP
- Price
- From $57.75
A.Y. McDonald Starting Overload - Single Phase 230V Control Box Component, 1.5-15 HP
A.Y. McDonald
A.Y. McDonald Starting Overload - Single Phase 230V Control Box Component, 1.5-15 HP
- Price
- From $36.75
A.Y. McDonald Overload Kit - Single Phase Control Box Component, 1/2-1 HP
A.Y. McDonald
A.Y. McDonald Overload Kit - Single Phase Control Box Component, 1/2-1 HP
- Price
- From $117.25
A.Y. McDonald Relay Kit - Single Phase Control Box Component, 1/2-1 HP
A.Y. McDonald
A.Y. McDonald Relay Kit - Single Phase Control Box Component, 1/2-1 HP
- Price
- From $106.60
A.Y. McDonald Capacitor & Overload Kit - Single Phase Control Box Component, 1/2-1 HP
A.Y. McDonald
A.Y. McDonald Capacitor & Overload Kit - Single Phase Control Box Component, 1/2-1 HP
- Price
- From $87.50
Baker Submersible Pumps, Ends, Motors
Description
Authorized Baker Water Systems Dealer · Houston, TX
The Complete
Baker Submersible
System
One American manufacturer, building water systems since 1873, covers the entire path from the bottom of the well to the wall of the wellhouse: submersible pumps and pump ends from 5 to 1,100 GPM, motors from 1/2 to 250 HP, control boxes, three-phase starters, the AutoDRIVE constant-pressure VFD, Pumptec motor protection, factory-assembled AutoPAC packages, and every accessory in between. This page is the map — how the system fits together, how to size it, and which collection holds each piece.
3 Ways
Complete · AutoPAC · Component Build
5–1,100 GPM
Residential to Municipal
1/2–250 HP
4" Through 10" Systems
Since 1873
One Matched Manufacturer
The First Decision
Three Ways to Buy a Baker Submersible System
Before series, horsepower, or voltage, decide how much of the system arrives pre-matched. Everything else on this page flows from this choice.
Simplest
Complete Pump
Pump end + motor + leads, matched at the factory
- Arrives withMotor, leads & internal check valve
- 3-wire single phaseControl box in the carton
- Three phaseStarter kit in the carton
- Pressure behaviorConventional tank + switch cycling
- Best whenNew install or full replacement
Constant Pressure
AutoPAC Package
Pump + motor + AutoDRIVE VFD in one SKU
- Arrives withPump, motor & AutoDRIVE, factory-balanced
- Pressure behaviorOne constant pressure, city-water feel
- Tank requiredSmall buffer only
- AccountabilityOne part number, one warranty conversation
- Best whenConstant pressure is the goal from day one
Most Flexible
Component Build
Pump end + motor + control, assembled to your spec
- You chooseEnd, motor, and control independently
- Repair economicsReplace only what failed
- Enabled byNEMA-standard mounting across the line
- Ordering aidLB / LS suffixes ship pumps without controls
- Best whenMotor tests healthy, or the spec is custom
The Honest Economics
Components win when part of the system is verifiably good — a motor that passes its megohm test, a control box with one failed capacitor. Complete pumps and AutoPACs win everywhere else, because the labor to pull and reset a drop-pipe string usually exceeds the cost of the component you were trying to save. Decide with a meter, not a hunch — and if you send us the readings, we'll tell you straight which path is cheaper.
The Hub
Shop the Baker Line by Collection
Each collection below carries its own detailed selection guide — series comparisons, spec tables, troubleshooting, and FAQs. This page stays at the system level; the deep dives live one click away.
Complete Submersible Pumps
Six 4" series plus the bottom suction cistern pump, 5–80 GPM, 1/2–10 HP — every unit ships with motor and leads, and three-wire models include the control box or starter kit.
Submersible Pump Ends
The wet end alone in seven 4" series plus 6"–10" stainless big-bore to 1,100 GPM — the repair path when the motor is still good, and the starting point of every custom build.
Submersible Motors
1/2 to 250 HP across 4", 6", 7", 8", and 10" frames — 2-wire, 3-wire, and three-phase, with cast iron or stainless end bells on the large frames.
Control Boxes & Components
Three tiers for three-wire single-phase motors, 1/2–15 HP, plus every internal part — capacitors, relays, overloads, contactors — for surface-level repair.
Starter Kits & AutoDRIVE VFD
Pre-assembled IEC starters for three-phase motors to 75 HP, and the American-made AutoDRIVE that holds constant pressure — including three-phase output from single-phase power.
AutoPAC Constant-Pressure Packages
Factory-assembled pump + motor + AutoDRIVE systems in one part number — horsepower balanced, pressure control chosen (switch or transducer), ready to set.
Engineering-Led Sizing Support · Free by Phone
Sizing a Submersible System, Start to Finish
A submersible pump either matches its well or it fails early — there's no middle. Six numbers make the selection, and five of them come from your well report and your fixture count.
The Selection Sequence
1
Well Yield — the Hard Ceiling
Your driller's pump test states what the well sustainably produces. No pump selection may exceed it; a pump that outruns its well runs dry, and dry running is the fastest way to kill a submersible.
2
Peak Demand — the Target
Count what runs simultaneously. A typical three-bedroom home lands near 10–15 GPM; irrigation zones, livestock, or multi-family push toward 20–40+ GPM. Demand picks the GPM class; yield caps it.
3
Pumping Water Level
Static level plus drawdown at your pumping rate — the depth the pump actually lifts from, which is not the well depth and not the static level alone.
4
Total Dynamic Head
Pumping level + rise to the tank + pipe friction + delivery pressure converted to feet (PSI × 2.31). See the worked example — this single number is where most self-sizing goes wrong.
5
Model from the Curves
Within the GPM class, pick the horsepower and stage count whose published curve delivers your flow at your head with margin — confirmed against Baker's tables, not estimated.
6
Electrical & Buying Path
Available service picks the configuration (next section); the configuration plus your constant-pressure decision picks the collection: complete pump, AutoPAC, or component build.
Worked Example — Total Dynamic Head
Pumping water level 220 ft, wellhead to tank rise 10 ft, friction loss in 250 ft of drop pipe and yard line ~12 ft at 12 GPM, delivery pressure 50 PSI (50 × 2.31 = 116 ft). TDH ≈ 220 + 10 + 12 + 116 = 358 ft. The pump you want delivers 12 GPM at 358 ft with headroom — a number you read off a curve chart, never off a horsepower badge. Baker's published tables exclude riser friction; it must be added, as here.
⚠ The Two Classic Self-Sizing Errors
Buying by horsepower instead of by curve — two pumps of equal HP with different stage counts behave completely differently. And classing the pump above the well's yield because "bigger is safer" — it isn't; it's how wells get pumped dry and motors get cooked.
Or Send Us Five Numbers
Well depth, static level, tested yield, fixture count, available voltage — email sales@watermainsupply.com or call 281.664.8000 and the selection comes back same-day, checked against Baker's curves and application engineering. Free, and considerably cheaper than the wrong pump.
The Electrical Decision
Four Configurations, One Table
Every Baker submersible runs in one of four electrical configurations. Your available service and your appetite for constant pressure decide which — and each row links to the collection that carries its hardware.
| Configuration | HP Reach | Above-Ground Hardware | Pressure Behavior | Choose It When |
|---|---|---|---|---|
| 2-Wire Single Phase | 1/2–1 1/2 HP | Pressure switch only — starting components sealed in the motor | Conventional cycling | Shallow-to-moderate residential sets where simplicity wins |
| 3-Wire Single Phase | 1/2–15 HP (6" frame above 10) | Control box — serviceable at the surface | Conventional cycling | More HP, deep sets, or any system that may add a VFD later |
| 3-Wire Three Phase | 1/2–250 HP | Starter kit — contactor + calibrated overload | Conventional cycling | Commercial power on site; the efficiency choice at scale |
| Variable Speed (VFD) | Through 5 HP | AutoDRIVE — replaces control and pressure switch | One constant pressure | City-water feel from a private well — buy it built as an AutoPAC |
The Detail Everyone Misses
Baker complete pumps include their required control — the box or starter is in the carton unless the model carries an LB (less box) or LS (less starter) suffix. Order the control separately only for component builds, suffix orders, replacements, or tier upgrades. When in doubt, read the suffix before adding a control to the cart.
Factory-Built Constant Pressure
AutoPAC: The Whole System in One Part Number
Constant pressure can be assembled — pump, motor, drive, all matched by hand. Or it can be ordered. The AutoPAC is Baker's answer to the second option.
An AutoPAC pairs a Baker submersible pump and motor with the AutoDRIVE VFD at the factory — horsepower balanced against drive output, pressure control specified up front, one part number on the PO and one warranty conversation if anything ever needs attention. The suffix tells you the sensing method: APS packages regulate on a pressure switch; APT packages regulate on a pressure transducer, the tighter-tolerance choice we recommend when steady pressure is the entire point of the purchase.
Reading an AutoPAC model number works like any Baker pump with a package suffix: 23050J2-APS is a 23000-series stainless pump, 1/2 HP, 5 GPM class, 2-wire — delivered as a constant-pressure package with a switch-regulated AutoDRIVE.
Why Order the Package Instead of the Parts
MatchingPump, motor & drive balanced at the factory ✓
OrderingOne SKU — no compatibility homework
Pressure controlAPS (switch) or APT (transducer) chosen up front
TankSmall buffer replaces the full-size tank
WarrantyOne manufacturer across the whole system ✓
AlternativeBuild it yourself from the components — both paths welcome
Insurance for the Most Expensive Component Down the Well
Pumptec Motor Protection
A submersible motor's worst enemies aren't age — they're dry running, voltage events, and conditions the pressure switch can't see. Pumptec devices monitor motor load and line power continuously and disconnect the motor before damage, then restart automatically after an adjustable delay.
| Model | Motor Coverage | Voltage | Distinctive Feature |
|---|---|---|---|
| QD Pumptec | 1/3–1 HP, 3-wire single phase | 230V | Mounts inside the QD-style control box — protection without a second enclosure |
| Pumptec with Remote Reading | 1/3–1 1/2 HP, 2- and 3-wire | 115/230V | Diagnostic readout for troubleshooting from the wellhouse |
| Pumptec Plus | 1/2–5 HP, single phase | 230V | The full-range unit for larger residential and light commercial systems |
What It Catches
Dry-run and low-yield conditions, waterlogged tanks and rapid cycling, low voltage and surge events, and air- or gas-locked pumps — the failure modes that cook motors slowly while the pressure switch reports business as usual.
When You Don't Need It
AutoDRIVE and AutoPAC systems carry their own dry-run, overload, and voltage protection inside the drive — adding a Pumptec there is redundant. Pumptec earns its keep on conventional switch-cycled systems, especially low-yield wells where drawdown flirts with the pump intake. Ask when you quote and we'll tell you which side of that line you're on.
The Last 10% That Decides the Install
Finishing the System: Accessories Checklist
Every callback we've ever heard about traces to the small stuff — the splice, the wire gauge, the tank precharge. Run the checklist before the rig shows up.
Submersible Wire & Splice Kit
Gauge is set by horsepower and total cable length — undersized wire starves the motor of voltage under load. Heat-shrink or resin splice kits make the down-well connection watertight; tape alone doesn't survive.
Torque Arrestor & Safety Rope
The motor's starting torque twists the drop pipe on every start; the arrestor absorbs it and centers the pump in the casing. The rope is the insurance policy the day a fitting lets go.
Pitless Adapter or Well Seal
The sanitary exit through the casing below frost line (pitless) or the sealed top-of-casing termination (well seal) — code-required, and the barrier that keeps surface water out of your aquifer.
Pressure Switch
The cycling brain of a conventional system. Low-pressure-cutoff versions (the M4 style) disconnect at ~10 PSI below cut-in — a poor man's dry-run protection worth having on low-yield wells.
Pressure Tank
Sized to the pump, not the house: undersized tanks short-cycle the motor to death. Precharge is set relative to cut-in per the tank maker's chart — verify it with a gauge, not faith. AutoDRIVE systems need only a small buffer.
Check Valves for Deep Sets
Every Baker pump carries an internal check valve; deep settings add inline check valves in the drop pipe to manage the standing column. Tell us your set depth and the spacing comes with the quote.
⚠ The Warranty Sentence Worth Memorizing
Undersized wire and incorrect voltage are installation defects, not product defects — motor damage from either is the classic warranty-claim denial across the industry. Size the cable from the manufacturer's chart for your HP and run length, and verify voltage at the pressure switch under load, not at the panel with the pump off.
The Numbers Behind the Nameplates
Engineering Notes on the Baker Line
Details that don't fit on a product card but decide real installations — collected here so your installer doesn't learn them the expensive way.
Voltage Tolerance: +6% / −10%
Baker motors accept supply from 10% under to 6% over nameplate voltage, measured at the motor under load. Chronic low voltage — usually undersized wire on a long run — overheats windings while everything looks fine at the panel.
Cycling Limit: ~20 Starts per Hour
Starting is the hardest moment of a motor's life. A waterlogged tank or an oversized pump that satisfies demand in seconds will short-cycle past this limit and age the motor years per month. Tank sizing is motor protection.
Cooling Flow: ~1 ft/sec Past the Motor
The well water flowing over the motor shell is its radiator, rated around 95°F ambient. Large casings and top-feeding wells may need a flow inducer sleeve to force water past the motor — worth asking about at quote time.
Depth Rating: 984 ft
Baker 4" motors are rated for submersion to 984 ft — comfortably beyond any 4" residential application. Deep sets are constrained by hydraulics (stages and HP) and check-valve strategy long before motor depth becomes the limit.
Built-In Thermal Protection on Small 2-Wire
2-wire motors through 1 HP carry thermal overload protection inside the motor itself — part of why a 2-wire system needs nothing above ground but the pressure switch.
Rotor Construction Scales With HP
Aluminum rotor cages serve the fractional and low-integer horsepowers; copper rotors take over at the top of the 4" range where efficiency and heat matter most — one reason big-HP motors run cooler than their duty suggests.
Speak Well Driller Fluently
Well System Glossary
Ten terms cover ninety percent of every well conversation. Master these and the driller's report, the curve chart, and our quote all read in plain English.
| Term | What It Means | Why It Matters |
|---|---|---|
| Static Water Level | Depth to water with the pump off and the well rested | The starting point of every head calculation |
| Drawdown | How far the level drops while pumping at a given rate | Static + drawdown = the depth you actually lift from |
| Pumping Water Level | Static level plus drawdown — the working depth | The first term in Total Dynamic Head |
| Well Yield | The flow the well sustainably produces, per the pump test | The ceiling no pump selection may exceed |
| Total Dynamic Head (TDH) | Pumping level + rise + friction + pressure (PSI × 2.31) | The number you enter the curve chart with |
| Curve / Performance Chart | Published flow-vs-head data for each model | Where pumps are actually selected — never by HP alone |
| Cut-In / Cut-Out | Switch pressures that start and stop a conventional system | The cycling band a VFD eliminates |
| Tank Drawdown | Usable water a pressure tank delivers between cycles | Governs cycling frequency — see the 20-starts rule above |
| Dead Heading | Running the pump against a closed discharge | No flow means no motor cooling — avoid by design |
| Flow Inducer Sleeve | A shroud forcing well water past the motor shell | Cooling insurance in large casings and top-feed wells |
System-Level FAQ
Common Questions
Complete pump, AutoPAC, or components — how do I actually decide?
Three questions in order. Is anything in the existing system verifiably healthy (megohm-tested motor, working drive)? If yes, components repair it for less. Do you want constant pressure? If yes, the AutoPAC delivers it factory-matched in one part number. Otherwise, a complete pump is the shortest path — motor, leads, and control arrive together. When readings are borderline, send them over; we'll do the math with you.
Which pump series is right for my water?
Chemistry and budget pick the construction: thermoplastic for normal water on a budget, stainless for aggressive water and long horizons, silicon bronze or no-lead lines where specifications demand them, all-stainless hydraulics for the most corrosive service. The complete pumps and pump ends collections carry full series-by-series comparisons — this page deliberately stays at the system level.
Do Baker pumps come with the control box or starter?
Yes — unless the model number says otherwise. Three-wire single-phase pumps include their matched control box; three-phase pumps include the starter kit. The LB (less box) and LS (less starter) suffixes exist for component builds and VFD systems where the conventional control would be redundant. Read the suffix before buying a control separately.
Can I mix a Baker pump end with a motor I already own?
Usually — 4" submersible equipment is built to NEMA dimensional standards, so ends and motors cross-mate across brands in most cases. The pairing must still agree on horsepower (set by the end's stage count) and spline fit. Send both model numbers and we confirm compatibility before anything ships; it takes minutes and prevents the expensive kind of surprise.
What actually voids a submersible warranty?
The installation classics: undersized wire starving the motor of voltage, supply outside the +6%/−10% tolerance, dry running, and short-cycling from a failed or undersized tank. None of these are product defects, and every manufacturer's warranty department knows it. The accessories checklist above exists precisely to keep your claim theoretical.
Is the AutoPAC better than assembling my own AutoDRIVE system?
Functionally they land in the same place — the difference is who does the matching and who owns the result. The AutoPAC arrives factory-balanced under one part number and one warranty; the component path gives you freedom to reuse a healthy motor or pick a different pump series. New install wanting constant pressure: AutoPAC. Retrofitting a drive onto good existing equipment: components.
Do I need Pumptec protection?
On a conventional switch-cycled system over a low-yield well — where drawdown can reach the pump intake — it's cheap insurance against the dry-run event that kills motors. On AutoDRIVE and AutoPAC systems, no: the drive already carries dry-run, overload, and voltage protection, and doubling up buys nothing. Somewhere between? Describe the well and we'll give you a straight answer.
How deep can a Baker submersible go?
The motor is rated to 984 ft of submergence, so hydraulics set the practical limit first: high-stage 4" models publish curves into the 1,300 ft head range. Real deep sets are engineered orders — stage count, check-valve spacing in the drop pipe, cable sizing for the run, and cooling flow all get confirmed before we commit a model. Send the well log and it comes back as a checked selection, not a guess.
One Call Sizes the Whole System
Well depth, static level, yield, fixture count, available voltage — five numbers, and the complete selection comes back same-day: pump, motor, control, wire gauge, and tank, checked against Baker's curves.
sales@watermainsupply.com
281.664.8000Free System Sizing & Technical Support
sales@watermainsupply.comSame-Day Quote Response
Authorized DealerBaker Water Systems · The Complete Submersible Line
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