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Series 8000 Metering Pump in 316 SS
Neptune Series 8000 High Volume Metering Pumps

The Neptune Series 8000 "dia-Pump" is a hydraulically-actuated high-volume diaphragm pump designed for large-scale metering applications such as regeneration, pretreatment and waste treatment. Both simplex and duplex models are available.

Series 8000 Features :

  • Suction and discharge valves can be removed for cleaning without disconnecting the piping.
  • Pumps capacity is adjustable by micrometer dial.
  • Electric positioners or variable speed drives are available for automatic capacity control.
  • Capacities to 350 gph simplex; 700 gph duplex. Pressures to 100 psi.
  • All moving parts of the Series 8000 "dia-PUMP" run submerged in oil for extended service.
  • Hydraulic flexing and balance of diaphragm eliminates diaphragm stress.
  • The Series 8000 "dia-PUMP" needs no packing, thereby eliminating packing leakage and the resulting maintenance.

Specifications are given below, or you can download product information for the Series 8000 line (PDF format) here:

  • Data Sheet (specifications, performance charts & dimensions)
  Series 8000 Specifications
Model
Number
Materials
Of Construction
Type Strokes
Per Minute
Capacity @ (gph)
25 psi 50 psi 100 psi 125 psi 150 psi
8350S-3 316 SS Simplex 117 350 325 300 295 295
8350S-4 C-20 350 325 300 295 295
8350S-5 PVC 350 325 300 290 280
8350D-3 316 SS Duplex 117 700 650 600 590 590
8350D-4 C-20 700 650 600 590 590
8350D-5 PVC 700 650 600 580 560

Notes:
Use a 2 HP motor for all pressures.
Piston diameter for all models is 4.25".
Capacities based on water using an 1800 rpm motor.


Series 8000 Duplex in 316 SS
  Series 8000 Materials Options
Basic Material Pump Head Valve Valve Check O-Ring Diaphragm
316 SS 316 SS 316 SS 316 SS Viton Teflon
C-20 C-20 C-20 C-20 Viton Teflon
PVC PVC PVC Ceramic Viton Teflon

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