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Stainless steel centrifugal pump with NPT pipe fittings

Dayton

Dayton 4JMX2 Centrifugal Pump 1hp 90gpm 304 Stainless Steel

SKU CH-4KXR-WY8HZ MPN 4JMX2

Centrifugal pump with 304 stainless steel housing and impeller delivers up to 90 gpm at 65 ft head for drainage applications

  • TypeDrain Components
  • Delivers up to 90 gpm for high-volume transfer
  • 304 stainless steel housing resists corrosion in harsh fluids
  • 1 hp motor provides up to 65 ft of head
  • Single-phase design suits standard workshop power
  • Handles media up to 200 Degrees F for hot-water circulation

Pump Application

The Dayton 4JMX2 is a single-phase centrifugal pump built for moving clean water and compatible fluids in plumbing and drainage installations. Its 304 stainless-steel housing and closed impeller resist corrosion while delivering up to 90 gallons per minute at open discharge. The unit operates on standard single-phase power and connects via NPT fittings for straightforward integration into existing pipework.

Suitability Notes

This pump suits installers who need a compact, corrosion-resistant mover for moderate head pressures up to 65 feet and flow requirements around 75 gpm at 10 feet of head. It is not suited for systems demanding higher shut-off pressure than 150 psi, media temperatures above 200 degrees Fahrenheit, or fluids with viscosity exceeding 31 SUS. Buyers needing three-phase power or larger discharge connections should consider other options.

Deciding Specification

The maximum flow rate of 90 gpm at zero head and 75 gpm at 10 feet of head determines whether this pump meets the hydraulic duty point for the intended plumbing circuit. Match these figures against the required system curve before purchase.

Highlights

  • Delivers up to 90 gpm for high-volume transfer
  • 304 stainless steel housing resists corrosion in harsh fluids
  • 1 hp motor provides up to 65 ft of head
  • Single-phase design suits standard workshop power
  • Handles media up to 200 Degrees F for hot-water circulation

Specifications

TypeDrain Components
BrandDayton
Model4JMX2

Questions about this item

What does the pump ship with and what fittings must I supply?

The unit is the pump only; you must provide 1 1/2 in NPT intake piping, 1 1/4 in NPT discharge piping and a single-phase power connection.

Which flow-rate figure should I use when sizing this pump?

Use the 90 gpm maximum for open discharge, the 75 gpm at 10 ft of head for typical system resistance, or the 65 ft maximum head for high-lift jobs.

What does the 150 psi shut-off pressure mean for my piping?

It is the dead-head pressure the pump can develop; all downstream pipe, valves and fittings must be rated for at least 150 psi.

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