A.Y. McDonald 8500 High Pressure Shallow Well Jet Pump - NSF 61/372 Potable

The 8500 High Pressure is A.Y. McDonald’s cast iron shallow well jet pump with a square flange motor. The ejector sits in the pump housing in front of the impeller, so a single 1 1/4 in suction line runs to the water and the pump lifts it from as much as 25 ft below.

Certified for drinking water to NSF/ANSI 61 and NSF/ANSI 372, for private wells and home water systems.

High pressure or high capacity? This High Pressure version holds pressure to 70 to 80 PSI at shut-off, so it suits a 40/60 PSI switch setting. Where flow matters more than pressure, the 8500 High Capacity gives more water at 20 to 50 PSI.

• Easily serviced — the working parts come out with the motor, so the piping stays put; nozzle clean-out and drain plugs in the housing.
• Thermoplastic seal and condensation plate keeps an air gap between the motor and the water chamber; screwdriver slot on the motor shaft for impeller removal.
• Standardized A.Y. McDonald parts across the jet pump line.

Each pump runs on its own pressure switch and tank. Size it to the household’s peak demand. Where the water is deeper than 25 ft, a convertible jet with a deep well ejector reaches 120 ft.

Where two voltages are shown, the first is the factory wiring setting. Voltage is changed with the voltage change device on the motor, never at the pressure switch, and must match your supply before power is applied. All models listed are single phase unless the table states 3Ph.

Source: Pumps by Baker catalog, rev 3/26, p. 215. Max amps at the factory voltage setting.

Find your depth to water down the left and the pressure across the top. Each figure is gallons per minute delivered at that duty point, from A.Y. McDonald’s published table.

Reading it against the switch: reset to 40/60 PSI, the 1 HP 8510HP lifting 15 ft delivers 10.0 GPM at cut-in and 6.5 GPM as it reaches cut-out. At the factory 30/50 setting it gives 10.0 and 9.4 GPM.

Max shut-off is the pressure at zero flow — a ceiling, not a working point. A blank cell is a combination the pump does not reach. Source: Pumps by Baker catalog, rev 3/26, p. 216, High Pressure shallow well performance.