Neptune Series 500 SIMPLEX Models

500-S Series Hydraulic Diaphragm Pumps

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

Diaphragms

• PTFE

Capacity

• 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

500-S Series and 500-D Series Dimensions

DIMENSIONS ARE APPROXIMATE. SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE

500-S Series and 500-D Series Selection Chart

Standard Motor: 1/3hp-1ph-115VAC-60c-TEFC†

SIMPLEX AND DUPLEX: Any duplex combination can be created using any models on pages 7 and 8, as long as both have the same stroking speed.

† Models 547 furnished with integral 1/2hp-1ph-115VAC-TEFC motor as standard. See page 9 for motor options available. IEC metric motor adapter available.
§ See page 6 for gearbox dimensions; see Bulletin DP-500E for PVDF Liquid Head detail. PVDF models do not include Eze-Clean™ valves.
* Neptune recommends that 1/2hp (0.37 kW) high pressure models be used only in flooded suction applications. Flange adapter required for high pressure models.
** Standard motor only. For flanged-mounted motor, add 20 lb. (9 kg).
PVC and PVDF models, 125°F (52°C) maximum.
For Higher Capacities see page 8.

Downloads

500 Series-Brochure

Series 500‑5000-IOM

Dimensional Drawings

500‑S‑N3

500‑S‑N5

500‑S‑N3‑METRIC

500‑S‑N5‑METRIC