Neptune Products

Delivering accurate, precise and quality solutions

Neptune's technical innovations, backed by solid customer support, builds confidence in our complete portfolio of products, delivering peace of mind reliability to our end users.

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Neptune Markets

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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500S 547-S-N8_1109 515-S-N1 515-S-N3-TE1

500-S Series

500-S Series Hydraulic Metering Pumps come standard in Neptune’s Simplex design, but can be converted to Neptune’s Duplex design - 500-D Series. Neptune’s Duplex design is configured to include two micrometer dials with two liquid heads.

Liquid Head Materials of Construction
  • 316SS
  • C-20
  • PVC
  • PVDF
  • PTFE
  • 0.80 gph (3.03 L/h) to 34 gph (128 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)
  • PVDF - 125°F (52°C)
Standard Motor
  • 1/3HP-1ph-115VAC-60c-TEFC

Features and Benefits

  • EZE-CLEAN™ Valves – feature cartridges that can be removed for cleaning without disturbing the piping to the pump
  • Ten turn micrometer dial calibrated in 1% increments, with the ability to adjust capacity from 10% to 100%
  • Variable Oil By-Pass™ Stroke Adjustment provides a better valve performance when compared to variable linkage designs
  • Bright color contrasted dial protected from corrosion by clear PVC Covering
  • Stroke mechanism moves only when adjustment is made, eliminating wear
  • Piston is powered through complete stroke length at all capacity adjustments, eliminating stress, wear and shock of lost motion designs
  • Totally enclosed fan-cooled motor with built-in automatic thermal overload