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Single-source, end-to-end solutions

Neptune delivers pump systems for use in the reliable and safe handling of chemical fluids used for water treatment applications in municipalities, general industries and agriculture.

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5005/5003 Series

Neptune Models 5005-S and 5003-S Hydraulic Metering Pumps are built to deliver very low flows that are repeatable and accurate, ranging down to quarts per day. Discharge pressures are higher than mechanical metering pumps. Explosion-proof models are available for use in hazardous atmospheres.

These pumps are necessary in oil/gas production, oil recovery and refineries. Typical applications include the injection of antifoam agents, corrosion inhibitors and other additives injected at very low volumes but high pressures.

Liquid Head Materials of Construction
  • 316SS
  • C-20
  • PVC
  • PTFE
  • 0.35 gph (1.3 L/h) to 0.50 gph (1.9 L/h)
Max Pressure
  • 3,000 psi (206.8 bar)
Max Temperature
  • 316SS - 200°F (93°C)
  • C-20 - 200°F (93°C)
  • PVC - 125°F (52°C)
Standard Motor
  • 1/3HP-1ph-115VAC-60c-TEFC
logo_choice Select Your Pump
  • icon_cert-CE
  • American Petroleum Institute Logo

Features and Benefits

  • High discharge pressures, to 3,000 psi (206.8 bar); exceeds limits of most small pumps, ideal for high pressure systems
  • EZE-CLEAN™ Valves – feature cartridges that can be removed for cleaning without disturbing the piping to the pump
  • Electric stroke-length control available for automatic capacity control
  • Explosion-proof motors available and are suitable for use in hazardous atmospheres
  • Low flow-rates – quarts/day
  • Accurate, reliable chemical feed
  • Duplex available