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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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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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500VS 532-VS-N3-003

500-VS Series

500-VS Series Hydraulic Metering Pumps are Neptune’s High Viscosity pumps, handling viscous fluids up to 5,000 cPs. 500-VS Series pumps come standard in Neptune’s Simplex design, but can be converted to Neptune’s Duplex design.

Liquid Head Materials of Construction
  • 316SS
  • PTFE
  • 2 gph (7.5 L/h) to 29 gph (110 L/h)
Max Pressure
  • 900 psi (62 bar)
Max Temperature
  • 200°F (93°C)
Standard Motor
  • 1/3HP-1ph-115VAC-60c-TEFC
logo_choice Select Your Pump
  • icon_cert-CE
  • American Petroleum Institute Logo

Features and Benefits

  • Handles viscous fluids of up to 5,000 cPs
  • 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