Neptune Series 500 High Viscosity Metering Pumps

Neptune high viscosity, flat diaphragm "V-Pumps" are designed to accurately meter viscous fluids up to 5,000 cP such as polymers and other thick liquids.

Features:

Handles moderate viscosity fluids.
Standard flat diaphragm.
Large internal porting with a large, single ball suction check valve.
Capacities to 30 gph (113 lph) at 100 psi (8 kg/cm²).
Available in all 316SS with SS trim.
Electric or pneumatic stroke control options and variable speed drives.
Variable Oil By-pass™ stroke adjustment mechanism provides better valve performance than variable linkage designs.
Teflon® diaphragm withstands most chemicals.

Specifications are given below, or you can download product information for the Series 500 High Viscosity line (PDF format) here:

Data Sheet (specifications, performance charts & dimensions)

Series 500 High Viscosity Specifications

Model Number	Capacity @ 100 PSI		Materials of Construction	Pressure @ 1/3HP		Piston Diameter (inches)	Strokes Per Minute	Shipping Weight (lbs.)
Model Number	gph	lph	Materials of Construction	psi	kg/cm²	Piston Diameter (inches)	Strokes Per Minute	Shipping Weight (lbs.)
515-VS-N3	3.0	11.3	316 SS	900	63	0.500	117	70
520-VS-N3	2.0	7.5	316 SS	400	28	0.687	37	70
522-VS-N3	4.0	15.1	316 SS	500	35	0.687	72	70
525-VS-N3	7.0	26.5	316 SS	700	49	0.687	117	70
530-VS-N3	5.5	20.8	316 SS	300	21	1.062	37	70
532-VS-N3	11.0	41.6	316 SS	300	21	1.062	72	70
535-VS-N3	18.0	68.0	316 SS	300	21	1.062	117	70
537-VS-N3	22.0	83.0	316 SS	300	21	1.062	144	70
547-VS-N3	30.0	113.0	316 SS	200	14	1.187	144	70

Notes:
Model 547 available with 1/2 HP motor, providing 300 psi (21 kg/cm²) maximum pressure
Duplex models available – contact us for more information.