A.Y. McDonald 22000 Series J - 5 GPM 4" Thermoplastic Pump End, 1/2-1 HP
A.Y. McDonald 22000 Series M - 25 GPM Pump End performance curve: total head vs flow by horsepower, Pumps by Baker catalog p. 50
A.Y. McDonald 22000 Series J - 5 GPM 4" Thermoplastic Pump End, 1/2-1 HP
A.Y. McDonald 22000 Series M - 25 GPM Pump End performance curve: total head vs flow by horsepower, Pumps by Baker catalog p. 50

A.Y. McDonald 22000 Series M - 25 GPM 4 in Thermoplastic Submersible Pump End

HP: 1/2 HP
Model - Head: 22050M - 63 ft at 25 GPM

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$340.41
SKU: 6634-238
Weight : 4.13 lb
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Description
A.Y. McDonald · Submersible Pump End
22000 Series M - 25 GPM Pump End
Thermoplastic 4 in pump end for Baker NEMA 4 in motors, 1/2 to 1 1/2 HP, 4 models.
63-175 ft at 25 GPM
1/2-1 1/2 HP
Fits NEMA 4 in Motors
282 ft Max Head (Shut-off)
1 1/4 in NPT Discharge
Built-In Check Valve
3 7/8 in Dia x 10.9-16.8 in L
5-7 lb Weight
What Ships and What It Needs to Run

Included: the 22000 Series M - 25 GPM pump end with its built-in check valve.

Motor required, ordered separately: a Baker 4 in motor of the same horsepower. Part numbers for the 230V motors are in the motor table under Models & Performance.

And the motor’s control: two-wire motors need none; single-phase three-wire motors need a control box; three-phase motors need a starter kit.

Overview

The 22000 Series M - 25 GPM pump end is the hydraulic end of Baker’s 22000 Series 4 in submersible pump, sold without the motor. It mounts on a NEMA 4 in Baker motor of the same horsepower, to build a new pump or rebuild one in the field.

The discharge head carries a built-in hex fluted guide bearing with a rubber insert around the stainless steel shaft, and 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.

This listing covers 1/2 to 1 1/2 HP (4 models), all with a 1 1/4 in NPT discharge.

  • Discharge head — reinforced thermoplastic with built-in guide bearing; 1 1/4 in NPT female outlet.
  • Check valve — internal anti-spin check valve with O-ring seal, molded from engineered polymer.
  • Shell — heavy wall stainless steel, left-hand threaded at both ends; field repairable.
  • Diffusers — polycarbonate, corrosion and abrasion resistant, built for sand handling.
  • Impellers — glass bead acetal.
  • Pump shaft — 7/16 in stainless steel hex for positive impeller drive.
  • Motor bracket — reinforced thermoplastic, aligned to the NEMA standard.
  • Motor coupling — 300 series stainless steel.
  • Intake screen and cable guard — thermoplastic.
  • Hardware — stainless steel screws, washers and nuts.
Genuine A.Y. McDonald equipment, factory-new in original packaging — sold and supported by Watermain Supply, an independent industrial supplier. Watermain Supply is an Authorized Stocking A.Y. McDonald and Baker Water Systems Distributor.
A.Y. McDonald Limited Warranty

Covered for 2 years from the date of manufacture or 1 year from the date of installation, whichever comes first, under A.Y. McDonald’s standard limited warranty for Baker products.

Room to Grow

One pump end per motor. Need more head later? Step up in horsepower within the M - 25 GPM class with the matching larger motor. Need more flow? Move to a higher flow class of the 22000 Series; every class uses the same 1 1/4 in NPT discharge, so the drop pipe connection stays the same.

Shared Specifications
Included Pump end with built-in check valve
Discharge 1 1/4 in NPT (female)
Pump diameter 3 7/8 in with cable guard
Motor fit NEMA 4 in Baker submersible motor of the same horsepower
Well size 4 in and larger
Check valve Built in
App connection None

Source: Pumps by Baker catalog (Sept 2025, rev 3/26), pp. 49-50.

Models & Performance — Will It Do What You Need?

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 32–37 GPM

HP 0 GPM (Shut-off) 7.5 GPM 17.5 GPM 27.5 GPM 30 GPM
1/2 HP 122 ft 108 ft 86 ft 55 ft 46 ft
3/4 HP 152 ft 137 ft 114 ft 73 ft 60 ft
1 HP 219 ft 201 ft 160 ft 113 ft 96 ft
1 1/2 HP 282 ft 258 ft 215 ft 158 ft 139 ft

Read from the published curve in the Pumps by Baker catalog (Sept 2025, rev 3/26), p. 50, digitized and rounded down, at the flows nearest 20%, 50% and 75% of the curve’s 37.3 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 75 ft 100 ft 125 ft 150 ft 175 ft
1/2 HP 15.93 2.93 — — — — —
3/4 HP 23.22 16.71 6.80 — — — —
1 HP 29.81 26.22 22.15 17.35 11.16 — —
1 1/2 HP 33.65 31.08 28.30 25.26 21.85 17.91 13.07

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 — — — — — — —
3/4 HP 8.81 — — — — — —
1 HP 22.80 18.14 12.24 2.61 — — —
1 1/2 HP 28.74 25.74 22.40 18.56 13.90 7.42 —

Output tables as printed in the Pumps by Baker catalog (Sept 2025, rev 3/26), pp. 49-50, 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.

Baker 4 in motor by horsepower (230V unless marked, ordered separately)

HP Motor
1/2 HP 2-wire 3132-005 · 3-wire 3132-004 · 3Ph 3132-525
3/4 HP 2-wire 3132-006 · 3-wire 3132-000 · 3Ph 3132-527
1 HP 2-wire 3132-007 · 3-wire 3132-001 · 3Ph 3132-529
1 1/2 HP 2-wire 3132-009 · 3-wire 3132-002 · 3Ph 3132-531

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.

Before You Buy — The Limits That Decide the Fit
Motor NEMA 4 in Baker submersible motor of the same horsepower; the pump end does not run without one
Motor control Two-wire motors: none. Single-phase three-wire: control box. Three-phase: starter kit
Well size 4 in casing and larger; the pump end is 3 7/8 in diameter with the cable guard
Riser friction Not included in the output tables; add it before choosing
Pairing One pump end per motor, one pump per well
Materials of Construction
Discharge head Reinforced thermoplastic with built-in guide bearing; 1 1/4 in NPT female outlet
Check valve Internal anti-spin check valve with O-ring seal, molded from engineered polymer
Shell Heavy wall stainless steel, left-hand threaded at both ends; field repairable
Diffusers Polycarbonate, corrosion and abrasion resistant, built for sand handling
Impellers Glass bead acetal
Pump shaft 7/16 in stainless steel hex for positive impeller drive
Motor bracket Reinforced thermoplastic, aligned to the NEMA standard
Motor coupling 300 series stainless steel
Intake screen and cable guard Thermoplastic
Hardware Stainless steel screws, washers and nuts

Source: Pumps by Baker catalog (Sept 2025, rev 3/26), pp. 37-38.

For engineering-led sizing and selection support or a factory submittal, email sales@watermainsupply.com or call 1-888.510.4036.
© Watermain Supply — A division of E4 Industrial LLC
Data Sheet
Pumps by Baker 22000 Series Guide
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