Neptune Series 7000 Mechanically Actuated Metering Pumps

The Neptune Series 7000 "dia-PUMP" are mechanically actuated metering pumps designed for water, wastewater and process applications. The mechanical design eliminates the use of contour plates on the liquid side of the diaphragm. The simple, straight through valve and head design allows improved flow characteristics.

Series 7000 Features:

Self-priming
Superior performance when pumping chemicals such as sodium hypochlorite, which can off-gas
Suction lift exceeding 20 ft. on water-like chemicals
Easily handles viscosities in excess of 5000 cps
Capacities to 300 gph; Pressures to 150 psi
Pump capacity is adjustable by micrometer dial while the pump is running
10 turn micrometer dial calibrated in 1% increments; Bright colored contrasted dial protected by clear PVC covering
Micrometer stroke length adjustment allows 10:1 turndown
Variable speed drives allow greater turndown range or automatic capacity control
All moving parts run submerged in oil for extended service
All models accept standard 56C frame motors

Specifications are given below, or you can download product information for the Series 7000 line (PDF format) here:

Data Sheet (specifications, performance charts & dimensions)

Series 7000 Specifications

Model Number	Strokes Per Minute	Stroke Length (mm)	Diaphragm Diameter (mm)	Capacity		Pressure		Motor Size (HP) Required for Operation At:
Model Number	Strokes Per Minute	Stroke Length (mm)	Diaphragm Diameter (mm)	gph	lph	psi	kg/cm²	50 psi	75 psi	100 psi	150 psi
7101-NX	18	14	100	13	49	150	11	1/3	1/3	1/3	1/3
7100-NX	37	14	100	25	95	150	11	1/3	1/3	1/3	1/3
7120-NX	72	14	100	50	190	150	11	1/3	1/3	1/3	1/2
7150-NX	117	14	100	80	303	150	11	1/3	1/3	1/2	3/4
7200-NX	37	18	200	95	360	100	8	1/3	1/2	3/4	n/a
7220-NX	72	18	200	185	700	100	8	1/2	3/4	1	n/a
7250-NX	117	18	200	300	1135	100	8	1	1½	2	n/a

Notes:
Use next larger motor for VS drive or SCR drive applications.

Series 7000 Materials Options

Material Code	Pump Head	Valve Check	Diaphragm
N3	316 SS	316 SS	Teflon
N5	PVC	Ceramic	Teflon
N8	Kynar	Ceramic	Teflon

Notes:
PVC head pumps are satisfactory for temperatures to 125°F / 52°C.
Kynar head pumps are satisfactory for temperatures to 200°F / 95°C.