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Baker Jet Pump Guide — A.Y. McDonald Shallow, Convertible & Deep Well
The Complete Baker
Jet Pump Guide
How to choose, install, prime, and maintain a Baker (A.Y. McDonald) jet pump — with the exact ejector packages, motors, repair parts, foot valves, and pressure switches that match every 8100, 8200, 8300, 8500, 8600, and 1500-series pump. Written so a first-time installer can follow it start to finish.
A jet pump is a centrifugal pump paired with a jet (ejector) assembly. The ejector uses a portion of the pump's own pressure to create suction down in the well, which is how a pump sitting above ground can pull water up from below. Get the pump, the ejector, and the piping matched correctly and the system primes easily and runs for decades. Get any one of them wrong and the pump will lose prime, short-cycle, or never build pressure at all.
This guide covers Baker's full A.Y. McDonald jet pump line. It walks you through picking the right system for your well, selecting the matching ejector by horsepower and depth, installing and priming the pump step by step, wiring the motor for your voltage, and stocking the correct spare parts. Every model and part number below is taken directly from Baker's factory price database — select by number, order with confidence.
1. Which Jet Pump Do I Need?
The single most important decision. It comes down to one number: how far the pump has to lift water — the vertical distance from the pumping water level in the well up to the pump, plus friction in the pipe.
Baker makes three families of jet pump. Measure (or ask your driller for) the depth to water and match it below.
Shallow Well
One pipe · lift up to 25 ft
The jet/ejector is built into the pump. One pipe runs to the well, lake, cistern, or tank. Simplest to install. Only works when total suction lift (vertical + friction) stays under about 25 feet.
Baker Models
- 8100 & 8100HP — Nema J
- 8500 & 8500HP — Square Flange
- 8300 E-Series — value import
Convertible
Shallow OR deep · one pump, two jobs
The most flexible choice. Run it shallow with a bolt-on shallow-well ejector, or deep (over 25 ft) with an ejector assembly down in the well. Buy once, adapt to the well you have.
Baker Models
- 8000 Series — economy convertible
- 8200 Series — Nema J convertible
- 8600 Series — Square Flange convertible
Deep Well
Two pipes (or packer) · lift over 25 ft
For lifts greater than 25 ft the ejector must go down into the well. Two configurations: twin-pipe (4"+ wells) or packer (2" wells, using the casing as the drive pipe). Baker's 1500 multi-stage is the high-head deep-well specialist.
Baker Models
- 8200 / 8600 convertible + deep-well ejector
- 1500 Multi-Stage — Nema C, high head
Quick rule of thumb Water within ~25 ft of the surface → shallow well (or a convertible set up shallow). Water deeper than 25 ft → convertible or 1500 with a deep-well ejector. Not sure? Deduct 1 ft of lift capacity for every 1,000 ft of elevation above sea level, and add friction for long horizontal pipe runs — then call us to confirm the sizing.
2. Shallow Well Jet Pumps
Jet is built in — no external ejector to buy. Certified NSF 61/372 for potable water (8100 / 8500). Maximum lift ~25 ft, one pipe to the source.
8100 Series — Nema J, High Capacity & High Pressure
Baker's workhorse cast-iron shallow-well pump on a Nema J motor. Choose High Capacity for more flow (irrigation, filling) or High Pressure for stronger household pressure. Available with a standard Noryl (thermoplastic) impeller or an upgraded brass impeller.
| Pump Model | Part No. | HP | Impeller | Series |
|---|---|---|---|---|
| 8150 | 6156-101 | 1/2 | Noryl | High Capacity |
| 8151 | 6156-100 | 1/2 | Brass | High Capacity |
| 8170 | 6157-106 | 3/4 | Noryl | High Capacity |
| 8171 | 6157-100 | 3/4 | Brass | High Capacity |
| 8110 | 6158-106 | 1 | Noryl | High Capacity |
| 8111 | 6158-100 | 1 | Brass | High Capacity |
| 8150HP | 6156-115 | 1/2 | Noryl | High Pressure |
| 8170HP | 6157-107 | 3/4 | Noryl | High Pressure |
| 8110HP | 6158-107 | 1 | Noryl | High Pressure |
Shop: 8100 High Capacity · 8100 High Pressure
8500 Series — Square Flange, High Capacity & High Pressure
Same hydraulics as the 8100 but on a square-flange motor that bolts directly to the pump body — no adapter flange, fewer parts, easy motor swaps.
| Pump Model | Part No. | HP | Impeller | Series |
|---|---|---|---|---|
| 8550 | 6164-001 | 1/2 | Noryl | High Capacity |
| 8551 | 6164-020 | 1/2 | Brass | High Capacity |
| 8570 | 6164-002 | 3/4 | Noryl | High Capacity |
| 8510 | 6164-003 | 1 | Noryl | High Capacity |
| 8550HP | 6164-008 | 1/2 | Noryl | High Pressure |
| 8570HP | 6164-013 | 3/4 | Noryl | High Pressure |
| 8510HP | 6164-015 | 1 | Noryl | High Pressure |
Shop: 8500 High Capacity · 8500 High Pressure
8300 E-Series — Value Shallow Well
A budget-friendly import shallow-well pump, NSF 61/372 certified, in 1/2 through 1-1/2 HP. Uses its own dedicated repair kits (motors are not stocked separately — contact the factory).
| Pump Model | Part No. | HP | Impeller |
|---|---|---|---|
| 8350 | 6156-125 | 1/2 | Noryl |
| 8350HP | 6156-143 | 1/2 | Noryl |
| 8370 | 6156-126 | 3/4 | Noryl |
| 8310 | 6156-127 | 1 | Noryl |
| 8315 | 6156-128 | 1 1/2 | Noryl |
Shop the 8300 E-Series shallow well jet pump.
3. Convertible & Multi-Stage Pumps
Convertibles run shallow OR deep depending on the ejector you bolt on. The 1500 multi-stage is Baker's high-head deep-well specialist.
8000 Series — Economy Convertible
| Pump Model | Part No. | HP | Impeller |
|---|---|---|---|
| 8050 | 6156-152 | 1/2 | Noryl |
| 8070 | 6156-153 | 3/4 | Noryl |
| 8010 | 6156-154 | 1 | Noryl |
| 8015 | 6156-155 | 1 1/2 | Noryl |
Shop the 8000 Convertible Jet Pump.
8200 Series (Nema J) & 8600 Series (Square Flange)
Baker's premium convertibles. Identical hydraulics; the difference is the motor mount. Both are NSF 61/372 certified and accept the full range of high-capacity, high-pressure, and deep-well ejector packages covered in Section 4.
| Pump Model | Part No. | HP | Motor | Impeller |
|---|---|---|---|---|
| 8250 | 6161-101 | 1/2 | Nema J | Noryl |
| 8270 | 6162-105 | 3/4 | Nema J | Noryl |
| 8210 | 6163-105 | 1 | Nema J | Noryl |
| 8650 | 6165-001 | 1/2 | Square Flange | Noryl |
| 8670 | 6165-002 | 3/4 | Square Flange | Noryl |
| 8610 | 6165-003 | 1 | Square Flange | Noryl |
Shop: 8200 Convertible (Nema J) · 8600 Convertible (Square Flange)
1500 Series — Multi-Stage, High Head
When you need serious pressure from a deep well, the 1500 is the answer: a multi-stage Nema C pump that pushes far higher head than a single-stage jet. Available with brass or plastic impellers.
| Pump Model | Part No. | HP | Impeller |
|---|---|---|---|
| 1575 | 6321-100 | 3/4 | Brass |
| 1575P | 6321-101 | 3/4 | Plastic |
| 1510 | 6322-100 | 1 | Brass |
| 1510P | 6322-101 | 1 | Plastic |
Shop the 1500 Multi-Stage Jet Pump.
4. Choosing the Ejector (Jet) Package
A convertible or deep-well pump is only half the system. The ejector is what actually creates suction down the well — and it must match the pump's horsepower and, for deep wells, the depth to water.
Shallow-well pumps (8100 / 8500 / 8300) already have the ejector built in — skip this section. For convertibles and the 1500, pick the ejector below.
How the ejector works — in plain English Water leaving the pump is split. Part goes to your house; part is sent back down a "drive" pipe to the ejector. There it squirts through a nozzle and venturi, creating a vacuum that drags well water up the "suction" pipe. That is why deep-well jets need two water paths and a pressure control valve to hold back-pressure on the drive side.
Shallow-Well Ejector Packages (≤25 ft, one pipe)
Bolt-on shallow-well adapter for a convertible pump. Match by series and HP.
| Fits Series | Package | Part No. | HP | Type |
|---|---|---|---|---|
| 8000 | 8050JP | 6156-156 | 1/2 | Standard |
| 8000 | 8070JP | 6156-157 | 3/4 | Standard |
| 8000 | 8010JP | 6156-158 | 1 | Standard |
| 8200/8600 | 651JP | 6423-101 | 1/2 | High Capacity |
| 8200/8600 | 652JP | 6423-102 | 3/4 | High Capacity |
| 8200/8600 | 653JP | 6423-103 | 1 | High Capacity |
| 8200/8600 | 655JP | 6423-105 | 1/2 | High Pressure |
| 8200/8600 | 656JP | 6423-106 | 3/4 | High Pressure |
| 8200/8600 | 657JP | 6423-107 | 1 | High Pressure |
| 1500 | 659JP | 6423-108 | 3/4 | Multi-Stage |
| 1500 | 658JP | 6423-109 | 1 | Multi-Stage |
Shop: 8000 Shallow Well Ejector · 8200/8600 High-Capacity · 8200/8600 High-Pressure · 1500 Multi-Stage Shallow Well
Order check on the 652JP Package 652JP (part 6423-102) is listed as a 3/4 HP high-capacity package in Baker's price database, but it also appears against the 1-1/2 HP 1515 in the 1500-series catalog table. Confirm HP and depth-to-water with us before ordering this one so you get the right nozzle/venturi.
Deep-Well Ejector Packages (>25 ft)
Two configurations. Twin-pipe (4"+ wells): two separate pipes drop into the well. Packer (2" wells): a single pipe with a packer seal that uses the casing itself as the drive path. Pick by HP and depth to water.
| Package | Part No. | HP | Config | Depth to Water |
|---|---|---|---|---|
| 8050D4JP | 6156-173 | 1/2 | 4" two-pipe | 30–90 ft |
| 8070D4JP | 6156-174 | 3/4 | 4" two-pipe | 30–110 ft |
| 8010D4JP | 6156-175 | 1 | 4" two-pipe | 30–110 ft |
| 8050D2JP | 6156-169 | 1/2 | 2" single-pipe (packer) | 30–80 ft |
| 8070D2JP | 6156-170 | 3/4 | 2" single-pipe (packer) | 30–90 ft |
| 8010D2JP | 6156-171 | 1 | 2" single-pipe (packer) | 30–100 ft |
| Package | Part No. | HP | Config | Depth to Water |
|---|---|---|---|---|
| 7508JP | 5999-008 | 1/2 | 4" two-pipe | 30–50 ft |
| 7509JP | 5999-007 | 1/2 | 4" two-pipe | 40–80 ft |
| 7901JP | 5999-000 | 3/4 & 1 | 4" two-pipe | 30–50 ft |
| 7906JP | 5999-002 | 3/4 | 4" two-pipe | 50–80 ft |
| 7902JP | 5999-001 | 1 | 4" two-pipe | 50–80 ft |
| 7903JP | 5999-047 | 1 | 4" two-pipe | 80–120 ft |
| 7735JP | 5999-056 | 1/2 | 2" single-pipe | 30–50 ft |
| 7808JP | 5999-071 | 3/4 & 1 | 2" single-pipe | 30–50 ft |
| 7812JP | 5999-064 | 3/4 | 2" single-pipe | 50–80 ft |
| 7809JP | 5999-062 | 1 | 2" single-pipe | 50–80 ft |
| 7810JP | 5999-063 | 1 | 2" single-pipe | 80–120 ft |
Full depth range including combo packages that cover a wider band with one kit — shop 8200/8600 Deep-Well 4" Two-Pipe and 8200/8600 Deep-Well 2" Single-Pipe. All-in-one option: the Baker Deep Well Jet Kit combo package.
| Package | Part No. | HP | Config | Depth to Water |
|---|---|---|---|---|
| 7109MP | 5999-014 | 3/4 | 4" two-pipe | 30–70 ft |
| 7110MP | 5999-096 | 3/4 | 4" two-pipe | 60–110 ft |
| 7112MP | 5999-005 | 1 | 4" two-pipe | 30–80 ft |
| 7113MP | 5999-006 | 1 | 4" two-pipe | 60–120 ft |
| 7125MP | 5999-015 | 3/4 | 2" single-pipe | 30–70 ft |
| 7128MP | 5999-017 | 1 | 2" single-pipe | 30–80 ft |
| 7129MP | 5999-018 | 1 | 2" single-pipe | 60–120 ft |
Shop: 1500 Deep-Well 4" Two-Pipe · 1500 Deep-Well 2" Single-Pipe
Required Deep-Well Controls & Adapters
Every deep-well jet needs back-pressure to run the ejector — that means a pressure control valve. Packer systems also need a casing adapter at the well head, and a foot valve at the bottom.
| Item | Model | Part No. | Fits |
|---|---|---|---|
| Pressure control valve | 8000D2PCV | 6156-212 | 8000, 1/2–1-1/2 HP |
| Packer foot valve | 8000D2FV | 6156-214 | 8000 packer, 1/2–1 HP |
| Packer casing adapter | 8000D2CA | 6156-210 | 8000 packer, 1/2–1 HP |
| 101 casing adapter (right-angle) | 101 | 6450-103 | 8200/8600/1500 two-pipe well head |
Shop: 8000D2PCV Pressure Control Valve · 8000D-P2FV Packer Foot Valve · 8000D2CA Casing Adapter · 101 Casing Adapter
5. Step-by-Step Installation
The same core sequence works for every Baker jet pump. Where shallow, twin-pipe, and packer systems differ, it's called out. Always follow your state and local plumbing and electrical codes (NEC/CEC). The complete plumbing layout is shown in the diagram at the top of this guide.
-
Inspect & site the pump
Check the pump and motor for shipping damage and confirm you have every part for your system type (pump, ejector, tank, valves, foot valve). Set the pump where it won't freeze, on a firm base, bolted down to stop vibration. Keep it within 4 ft of the tank to prevent switch chatter, and keep liquid temperature under 140°F (60°C).
-
Plan the suction piping
Suction pipe should be at least as large as the pump suction (typically 1-1/4"). Runs over 50 ft should step up a size to cut friction loss. Eliminate high spots and dips — they trap air and make priming nearly impossible. Suction pipe should run straight from the well or slope up to the pump, never up-and-over. If using poly pipe with barbed fittings, double-clamp every joint.
-
Shallow well: set the foot valve & (if convertible) bolt on the ejector
Install a foot valve on the end of the drop pipe (wells 2" and larger), and keep it at least 5 ft off the bottom of a clean well. On driven wells or sand points you can use an in-line check valve near the well head instead. On a convertible pump, install the shallow-well ejector: make sure the nozzle is in place, screw in the venturi (the long tube), fit the gasket, and bolt the adapter to the pump face evenly — do not over-tighten.
-
Deep well twin-pipe: assemble & lower the jet
Confirm the nozzle is installed and thread the venturi in line with it. Connect the suction and drive (pressure) pipes to the jet body — 4" jets need min. 1-1/4" suction / 1" drive; 4-1/2" jets need 1-1/2" / 1-1/4". Add a foot valve (or a 34-ft tail pipe with foot valve to protect low-yield wells). Lower the jet at least 5 ft below the static water level and a few feet off the bottom.
-
Deep well packer: soak, seal & set
Packers use the space between casing and suction pipe as the drive path, so the 2"/3" casing must be smooth and clean. Soak the packer in warm water to soften the leathers — never grease them. On 2" packers use Baker turned couplings to join the 1-1/4" pipe sections so drive water can pass. Install a strainer at the bottom, lower the assembly, then fit the packer casing adapter at the well head and bolt the pump to it.
-
Build the discharge & install the pressure control valve (deep well)
Install a tee or cross-tee at the pump discharge with a plug or gauge in the top port (this is your priming port). Every deep-well jet needs a pressure control valve between the pump and the first outlet, mounted as close to the pump as possible — without it the system loses prime during heavy use. Use the 8000D2PCV valve and set it to the pressure on the ejector chart.
-
Install the pressure tank
With the tank empty, set the air pre-charge 2 PSI below the pump cut-in pressure (Baker pumps ship with 30–50 PSI switches, so pre-charge to ~28 PSI). Put the tank on a firm, level surface. A pressure relief valve is recommended on all systems and mandatory above 100 PSI. Do not put any valve or filter other than a full-port ball valve between pump and tank.
-
Prime the pump (see Section 6), then wire the motor (see Section 7)
Fill the pump and suction pipe completely with water before starting. Then connect power to the pressure switch, confirm the motor voltage plug matches your supply, and start the pump. Never run a jet pump dry — even for seconds — or you'll destroy the seal.
Don't strangle the pump Standard ball valves are not full-port — they choke flow and cause "switch chatter" (rapid on/off cycling that burns switch and motor contacts). Between the pump and tank use only a wide-open gate valve or a genuine full-port ball valve. If you must run a filter or restrictive fitting, move the pressure switch to the tank tee.
6. Priming the Pump
Priming means filling the pump and suction pipe with water so there's no air for the impeller to spin against. A jet pump cannot pull water until it is fully primed.
Shallow Well
Remove the priming plug or gauge in the discharge tee. On shallow-well pumps, also remove the 1/8" plug between the suction and discharge ports so air can escape as you fill. Fill the pump and as much of the suction pipe as possible with water. Replace both plugs, crack open the nearest faucet a little, and start the pump. On long suction runs you may need to stop and refill the casing a few times before it catches prime.
Deep Well
Deep-well single- and multi-stage pumps require a complete prime before starting. Filling the pipes with water before you install the pump makes this far easier. Vent the air: on horizontal pumps remove the angled 1/8" vent plug just above the suction pipe; prime through a tee or the pressure control valve at the discharge. Vertical deep-well pumps prime through the gauge port on the built-in control valve — remove the motor-adapter vent plug to release trapped air.
The #1 cause of "it won't build pressure" An air leak on the suction side. Check every union and barbed fitting. Water can't go in unless the air can get out — and it can't hold prime if air is getting in. Fill completely, vent fully, and double-clamp poly connections.
7. Motor Voltage & Wiring
All electrical work should be done by a qualified technician and conform to NEC/CEC and local codes. Disconnect and lock out power before wiring or servicing.
Baker jet-pump motors ship pre-wired by horsepower:
- 1/2 HP — factory wired for 115 V (can be switched to 230 V)
- 3/4 HP to 1-1/2 HP — factory wired for 230 V (can run 115 or 230 V)
- 2 HP — 230 V only
Voltage is changed inside the motor cover — NOT in the pressure switch Move the voltage plug/switch inside the motor cover to match your supply before applying power. Running a 115 V-wired motor on 230 V will destroy the windings in seconds and voids the warranty. Attach power (either 115 or 230 V) and the ground to the Line terminals of the pressure switch; either hot/neutral can go to either Line terminal. Baker pumps ship with 30–50 PSI switches as standard.
8. Parts Every System Needs
A jet pump is never a standalone purchase. Every install needs a pressure switch and a pressure tank; open-well systems need a foot valve; deep wells need the controls in Section 4.
Pressure Switches (1/4" FNPT)
| Type | Setting | Model | Part No. |
|---|---|---|---|
| Standard | 20–40 PSI | MPSM12040 | 3129-020 |
| Standard | 30–50 PSI | MPSM13050 | 3129-021 |
| Standard | 40–60 PSI | MPSM14060 | 3129-022 |
| Heavy duty NSF | 30–50 PSI | MPSHD3050 | 3129-015 |
| Heavy duty NSF | 40–60 PSI | MPSHD4060 | 3129-016 |
| With pulsation plug | 30–50 PSI | MPSP3050 | 3129-027 |
Foot Valves (Silicon Bronze, SS strainer)
| Size | Model | Part No. |
|---|---|---|
| 3/4" | 400SB | 6814-000 |
| 1" | 400SB | 6814-001 |
| 1-1/4" | 400SB | 6814-002 |
| 1-1/2" | 400SB | 6814-003 |
| 2" | 400SB | 6814-004 |
Pressure / Diaphragm Tanks
Baker (McDonald) pre-charged tanks come in-line (2–6 gal), horizontal (10–26 gal), and vertical (16–119 gal). Match tank drawdown to pump capacity so the pump doesn't short-cycle. Browse the full range on the pressure tanks collection.
Well Pipe Holder — Safe Drop-Pipe Handling
Pulling or setting a drop pipe by hand is how pipes (and pumps) end up at the bottom of the well. A well pipe holder grips the pipe against the casing so you can add or remove sections safely. Keep pipe holder repair parts on the truck.
9. Motors & Repair Parts by Series
The parts that keep a Baker jet pump running. The 8100, 8200, 8500, and 8600 families share the same impeller/diffuser kits, rotary seal, and pump-body gasket — so one small parts shelf covers most of the line.
Replacement Motors
| Motor Type | HP | Model | Part No. | Used On |
|---|---|---|---|---|
| Nema J | 1/2 | 8150RM | 6155-240 | 8100 / 8200 |
| Nema J | 3/4 | 8170RM | 6155-241 | 8100 / 8200 |
| Nema J | 1 | 8110RM | 6155-242 | 8100 / 8200 |
| Square Flange | 1/2 | 8550RM | 6164-200 | 8500 / 8600 / 8600SW |
| Square Flange | 3/4 | 8570RM | 6164-201 | 8500 / 8600 / 8600SW |
| Square Flange | 1 | 8510RM | 6164-202 | 8500 / 8600 / 8600SW |
| Nema C | 3/4 | 1575RM | 6127-154 | 1500 Multi-Stage |
| Nema C | 1 | 1510RM | 6127-160 | 1500 Multi-Stage |
Shop: Nema J Motor · Square Flange Motor · Nema C Motor
Impeller / Diffuser Repair Kits & Shared Seals
Each Imp/Dif kit includes the impeller, diffuser, rotary seal, and housing gasket. Kits are HP- and material-specific.
| Part | HP / Fits | Kit / Part No. |
|---|---|---|
| Imp/Dif Kit (Noryl) | 1/2 HP | 6127-326 |
| Imp/Dif Kit (Noryl) | 3/4 HP | 6127-328 |
| Imp/Dif Kit (Noryl) | 1 HP | 6127-330 |
| Rotary shaft seal (5/8") | all jet | 6422-500 |
| Pump-body gasket | 8100/8200/8500/8600 | 6155-224 |
| Ejector gasket | 650-series jet package | 6450-217 |
Find kits by pump family: 8100 / 8200 Repair Parts · 8500 / 8600 Repair Parts · 8000 Repair Parts · 8300 E-Series Repair Parts · 1000 / 1500 Repair Parts. Or browse all pump repair parts and jet pump accessories.
10. Troubleshooting & Suction-Lift Basics
A vacuum/compound gauge on the suction side is the single best diagnostic tool for a jet pump. It reads total suction lift in inches of mercury (Hg): 1" Hg ≈ 1.13 ft of lift. Practical limit at sea level is about 25 ft (22" Hg).
| What the gauge shows | Likely cause | What to do |
|---|---|---|
| High vacuum (22" Hg or more) | Suction pipe in mud; foot/check valve stuck closed; lift exceeds pump capability | Raise the intake off the bottom; free or replace the valve; move to a deep-well setup |
| Low or zero vacuum | Suction pipe not submerged; air leak (often at a union) | Lower the intake below water; find and seal the leak; double-clamp poly joints |
| Needle fluctuates rapidly | Gaseous well; air leak; well yielding less than the pump moves | Throttle a ball valve in the suction line (don't exceed 22" Hg) to match well yield |
Low-Yield Wells: Use a Tail Pipe
If a deep-well pump can out-pump the well, drawdown lets it break suction and lose prime. Fit a 34-ft tail pipe between the jet assembly and the foot valve. As water level drops, pump output and well inflow equalize somewhere along the tail pipe instead of the pump losing prime. As always, set the jet ~5 ft below the static water level.
Common quick fixes Short-cycling / switch chatter → check tank pre-charge (2 PSI below cut-in) and remove flow restrictions between pump and tank. No pressure after install → suction air leak or incomplete prime. Pump runs but low flow → wrong or worn ejector nozzle/venturi for the depth, or a clogged foot-valve screen.
11. Seasonal / Winter Service
Where the pump, tank, or piping can freeze, drain the entire system before winter. Vertical pumps have a drain plug low on the casing; horizontal pumps may have two (one on the casing, one on the motor adapter). Multi-stage pumps may need to be tipped or blown out with compressed air to clear all the stages. Protect the pump from freezing and keep liquid temperature under 140°F (60°C) in service.
Why Buy Baker Jet Pumps from Watermain Supply
Whole-System Sizing
We match pump, ejector, tank, and controls as one system — so it primes the first time and doesn't short-cycle.
Every Part Number
Pumps, ejectors, motors, seals, foot valves, and switches — all cross-referenced from Baker's factory data.
Houston-Based Stock
Common SKUs ship fast from Houston. Reduced lead times for Texas and Gulf Coast contractors.
Real Technical Support
Tell us your depth to water, flow, and voltage and we'll spec the exact model, ejector, and controls.
12. Frequently Asked Questions
What's the difference between a shallow well and deep well jet pump?
A shallow-well jet pump has the ejector built into the pump and pulls water up to about 25 ft using one pipe. A deep-well jet pump places the ejector down in the well and uses two water paths (twin-pipe or packer) to lift water from more than 25 ft. A convertible pump can be set up either way.
How do I know which ejector (jet) package to buy?
Match the ejector to the pump's horsepower and — for deep wells — the depth to water, using the tables in Section 4. Shallow-well pumps (8100/8500/8300) already include the ejector. If you're between depth ranges or unsure, call us with your well details.
Why won't my jet pump build pressure after installation?
Almost always an air leak on the suction side or an incomplete prime. Fill the pump and suction pipe completely, vent all trapped air, and double-clamp every poly fitting. Check unions especially. See priming and troubleshooting.
Can I run a Baker jet pump on 115V or 230V?
Most 3/4–1-1/2 HP motors run either voltage; 1/2 HP ships wired for 115V; 2 HP is 230V only. Change the voltage inside the motor cover — never in the pressure switch — before applying power. See Section 7.
What else do I need besides the pump?
At minimum a pressure tank and a pressure switch; open wells also need a foot valve; deep wells add an ejector, a pressure control valve, and (packer systems) a casing adapter. See Section 8.
Which Baker pump is best for irrigation or high flow?
For potable service choose a High-Capacity 8100/8500. For dedicated irrigation and transfer, look at the centrifugal line — 8600SW, 89000 sprinkler, and Workhorse end-suction. Tell us the GPM and pressure you need.
Not Sure Which Baker Jet Pump You Need?
Give our sales desk your depth to water, required flow and pressure, and voltage — we'll spec the exact pump, ejector, controls, and spare parts and confirm what's in stock.
Baker and A.Y. McDonald are trademarks of A.Y. McDonald Mfg. Co. Model and part numbers from Baker factory data (eff. 1/05/2026); verify current availability and specifications before ordering. Watermain Supply (a DBA of E4 Industrial LLC) is a Houston, TX-based industrial distributor.
- Choosing a selection results in a full page refresh.