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Dayton 4JPH4 machine tool pump, cast iron housing, 1/8 hp, 230 V AC

Dayton

Dayton 4JPH4 Machine Tool Pump 1/8 hp 230 V AC Cast Iron

SKU CH-RAWQ-CBP86 MPN 4JPH4

A 1/8 hp three-phase cast-iron machine tool pump delivering 12.5 gpm at open flow and 9.8 gpm at 5 ft of head with a 10 ft maximum head

  • TypeDrain Components
  • 1/8 hp motor handles coolant circulation for light machining
  • Cast iron housing resists wear in abrasive fluid environments
  • 5 gpm maximum flow supplies ample volume for tool cooling
  • Operates at 230 V three-phase power for industrial installations
  • 10 ft maximum head lifts coolant to elevated machine positions

Application & Purpose

The Dayton 4JPH4 is a machine-tool pump built for coolant circulation in metal-working equipment. Its cast-iron housing and three-phase 230 V AC motor suit industrial workshops that need a compact, fixed-speed unit for continuous duty.

Deciding Specification

The critical figure is the 10 ft maximum head; the pump delivers 9.8 gpm at 5 ft of head but falls to 4 gpm at 10 ft and cannot operate at 15 ft. Systems requiring pressure beyond 10 ft of head must choose a different model.

Capacity & Limits

The pump moves up to 12.5 gpm at open discharge and handles fluids to 500 SUS viscosity. Immersion depth is limited to 6.38 in, and both intake and discharge accept 3/4 in NPT pipe. It is not suited for deeper sumps or higher-pressure circuits.

Highlights

  • 1/8 hp motor handles coolant circulation for light machining
  • Cast iron housing resists wear in abrasive fluid environments
  • 5 gpm maximum flow supplies ample volume for tool cooling
  • Operates at 230 V three-phase power for industrial installations
  • 10 ft maximum head lifts coolant to elevated machine positions

Specifications

TypeDrain Components
BrandDayton
Model4JPH4

Questions about this item

How does the 12.5 gpm maximum flow rate translate when the pump is installed in a real machine?

At zero head the pump delivers 12.5 gpm, but at 5 ft of head it drops to 9.8 gpm and at 10 ft of head it falls to 4 gpm; beyond 10 ft the flow stops.

The pump runs on 230 V AC three-phase — what does that limit in practice?

It requires a three-phase 230 V supply, so it cannot run on standard single-phase mains and must be wired to a compatible three-phase circuit.

What pipe sizes and mounting depth does the cast-iron housing need?

Both intake and discharge use 3/4 in NPT connections, and the unit can be immersed up to 6.38 in deep.

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