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Cast iron coolant pump with NPT intake and discharge ports

Dayton

Dayton 4JPG9 Coolant Pump 1/4 HP 230/460V 0.7/0.43Amp

SKU CH-R1S4-KJXBN MPN 4JPG9

Three-phase coolant pump delivers up to 55.5 gpm at 18 ft head with 1/4 hp motor

  • TypeDrain Components
  • Dual-voltage 230/460 V three-phase motor simplifies wiring for standard industrial power
  • Cast-iron housing resists corrosion and mechanical wear in coolant applications
  • Delivers up to 55.5 gpm at zero head for high-volume circulation
  • Maintains 42 gpm at 10 ft head ensuring pressure through long pipe runs
  • 25 in maximum immersion depth fits shallow sump installations

Industrial Coolant Pump 1/4 HP Three-Phase

The Dayton 4JPG9 is a cast-iron machine-tool coolant pump rated at 1/4 horsepower for 230/460 V three-phase supply. It draws 0.7 A at 230 V and 0.43 A at 460 V, delivering up to 55.5 gpm at open flow. Designed for immersion up to 8.25 in with 1 1/4 in NPT intake and discharge ports, it handles fluids to 500 SUS viscosity in machining and industrial cooling circuits.

Suited for Fixed-Speed Flood-Coolant Systems

This pump suits CNC machines, grinders and transfer lines that need continuous flood coolant at modest pressure. It is not for variable-speed drives, high-pressure through-spindle coolant, or portable applications that require single-phase power or a lighter housing. Buyers needing flows above 55 gpm at heads beyond 18 ft should look at larger-capacity units.

Maximum Head 18 ft Decides Fit

The 18 ft maximum head is the single figure that determines whether this pump can overcome your system resistance. At 10 ft of head it still moves 42 gpm, but flow drops to 26.4 gpm at 15 ft and reaches zero at 18 ft. Match your piping losses and nozzle pressure against this curve before selecting the 4JPG9.

Highlights

  • Dual-voltage 230/460 V three-phase motor simplifies wiring for standard industrial power
  • Cast-iron housing resists corrosion and mechanical wear in coolant applications
  • Delivers up to 55.5 gpm at zero head for high-volume circulation
  • Maintains 42 gpm at 10 ft head ensuring pressure through long pipe runs
  • 25 in maximum immersion depth fits shallow sump installations

Specifications

TypeDrain Components
BrandDayton
Model4JPG9

Questions about this item

How do I choose between the 230 V and 460 V wiring options for this pump?

The nameplate lists 230/460 V three-phase; wire the motor for the voltage your supply provides — 0.7 A at 230 V or 0.43 A at 460 V.

What does the 55.5 gpm maximum flow rate mean once the pump is installed?

That is the open-discharge figure; at 5 ft of head the flow drops to 52 gpm, at 10 ft to 42 gpm, and at 15 ft to 26.4 gpm.

What does the 18 ft maximum head cap in practice?

It limits the total lift plus friction loss the pump can overcome; beyond 18 ft of head the flow falls to zero.

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