Cutaway Diagram of a Neptune Series 500 Meteing Pump

Neptune Series 500 Metering Pump

Neptune Diaphragm Metering Pumps

Diaphragm Metering Pumps from Neptune Chemical Pump Co., Inc. come with Neptune's innovative design, quality workmanship and long-term reliability. All Neptune dia-Pumps are adjustable from 10% to 100% of capacity via micrometer dial, and are available in these materials:

Cast Iron with 316 Stainless Trim
316 Stainless Throughout
Alloy 20
PVC
Kynar

	Series 500 Standard Metering Pump Simplex Only Capacities from 1 to 18 gph (3.7 to 68 lph) Pressures to 1100 psi (77 kg/cm²)
	Series 500 Economy Liquid Head Simplex Only Capacities from 1 to 18 gph (3.7 to 68 lph) Pressures to 1100 psi (77 kg/cm²)
	Series 500 Original Simplex or Duplex Capacities (Simplex) from 0.2 to 80 gph (0.75 to 302 lph) Pressures to 3000 psi (210 kg/cm²)
	Series 500 Low Volume Simplex or Duplex Capacities (Simplex) from 0.2 to 0.5 gph (0.75 to 1.9 lph) Pressures to 3000 psi (210 kg/cm²)
	Series 500 High Viscosity Simplex or Duplex – for Light Slurries and Viscous Fluids to 5,000 cps Capacities (Simplex) from 2 to 30 gph (7.5 to 114 lph) Pressures to 450 psi (32 kg/cm²)
	Series 500 Tubular Diaphragm Simplex Only – for Slurries to 10% and Viscous Fluids to 20,000 cps Capacities from 2 to 80 gph (7.5 to 302 lph) Pressures to 300 psi (21 kg/cm²)
	Series 600 Simplex Only – High Volume, High Pressure Capacities to 240 gph (907 lph) Pressures to 3500 psi (245 kg/cm²)
	Series 7000 Mechanical Simplex Only – Mechanically Actuated Capacities to 300 gph (1135 lph) Pressures to 150 psi (10 kg/cm²)
	Series 8000 Simplex or Duplex – High Volume Capacities (Simplex) to 350 gph (1325 lph) Pressures to 100 psi (7 kg/cm²)
	Electronic Stroke Control Automatically controls the capacity of any Neptune Series 500, 600 or 6000 "dia-PUMP"