Neptune Series 500 Standard Metering Pumps

Variable Oil By-pass™ stroke adjustment allows better valve performance than variable linkage designs. The valve checks have extra time to seat even in heavy liquids since they are idle during the by-pass portion of the suction and discharge strokes.

Features:

Standard Motor: 1/3HP-1ph-115VAC-60c-TEFC
Totally Enclosed Fan-Cooled with built-in automatic thermal overload protection
Ten turn micrometer dial calibrated in 1% increments.
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.

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

Data Sheet (specifications, performance charts & dimensions)

Series 500 Specifications

Model Number	Capacity @ 100 PSI		Materials of Construction	Maximum Pressure		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.)
500-A-N1	1.0	3.7	Cast Iron	1000	70	0.500	37	60
500-A-N3			316 SS	1000	70
500-A-N4			C-20	1000	70
500-A-N5			PVC	150	11
510-E-N8	0.8	3.0	Kynar	150	11
515-A-N1	3.0	11.3	Cast Iron	1100	77	0.500	117	60
515-A-N3			316 SS	1100	77
515-A-N4			C-20	1100	77
515-A-N5			PVC	400	28
515-E-N8			Kynar	150	11
520-A-N1	2.0	7.5	Cast Iron	700	49	0.687	37	60
520-A-N3			316 SS	700	49
520-A-N4			C-20	700	49
520-A-N5			PVC	400	28
520-E-N8			Kynar	150	11
522-A-N1	4.0	15.1	Cast Iron	700	49	0.687	72	60
522-A-N3			316 SS	700	49
522-A-N4			C-20	700	49
522-A-N5			PVC	400	28
522-E-N8			Kynar	150	11
525-A-N1	7.0	26.5	Cast Iron	900	63	0.687	117	60
525-A-N3			316 SS	900	63
525-A-N4			C-20	900	63
525-A-N5			PVC	400	28
525-E-N8			Kynar	150	11
530-A-N1	5.5	20.8	Cast Iron	350	25	1.062	37	60
530-A-N3			316 SS	350	25
530-A-N4			C-20	350	25
530-A-N5			PVC	300	21
530-E-N8			Kynar	150	11
532-A-N1	11.0	41.6	Cast Iron	350	25	1.062	72	60
532-A-N3			316 SS	350	25
532-A-N4			C-20	350	25
532-A-N5			PVC	300	21
532-E-N8			Kynar	150	11
535-A-N1	18.0	68.1	Cast Iron	350	25	1.062	117	60
535-A-N3			316 SS	350	25
535-A-N4			C-20	350	25
535-A-N5			PVC	300	21
535-E-N8			Kynar	120	11

Note: Kynar models do not include Eze-Clean™ Valves. Other configurations are available: contact us for details.