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Series 500 Tubular Diaphragm Pump

Neptune Series 500 Tubular Diaphragm Metering Pumps

Neptune Series 500 tubular diaphragm pumps are engineered for viscous fluids up to 20,000 cP and for medium slurries up to 10% solids.

Features:

  • No-clog design – straight-thru flow pattern eliminates pockets where slurries can settle.
  • Easily handles high viscosity liquids.
  • Double diaphragm is standard.
  • Capacities to 80 gph (302 lph).
  • Control options include electric or pneumatic stroke control and variable speed drives.
  • Standard units with double ball suction and discharge valves. Single ball suction valve is optional.
  • Variable Oil By-pass™ stroke adjustment mechanism provides better valve performance than variable linkage designs.
  • Viton® elastomer withstands most chemicals.
  • Elastomer memory and tube shape reduce NPSH requirements, allowing more viscous fluids to be pumped.
  • Spring-loaded discharge (models N3 and N7 only). External back pressure valve is not required.

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

  • Data Sheet (specifications, performance charts & dimensions)
  Series 500 Tubular Diaphragm Specifications
Model
Number
Capacity
@ 100 PSI
Materials of
Construction
Maximum
Pressure
Piston
Diameter
(inches)
Strokes
Per Minute
Shipping
Weight
(lbs.)
gph lph psi kg/cm²
515-T-N3 3.0 11.3 316 SS 300 22 0.500 117 80
515-T-N5 PVC 100 8
515-T-N7 316 SS 100 8
520-T-N3 2.0 7.5 316 SS 300 22 0.68 37 80
520-T-N5 PVC 100 8
520-T-N7 316 SS 100 8
522-T-N3 4.0 15.1 316 SS 300 22 0.687 72 80
522-T-N5 PVC 100 8
522-T-N7 316 SS 100 8
525-T-N3 7.0 26.5 316 SS 300 22 0.687 117 80
5255-T-N5 PVC 100 8
525-T-N7 316 SS 100 8
530-T-N3 5.5 20.8 316 SS 300 22 1.062 37 80
530-T-N5 PVC 100 8
530-T-N7 316 SS 100 8
532-T-N3 11.0 41.6 316 SS 300 22 1.062 72 80
532-T-N5 PVC 100 8
532-T-N7 316 SS 100 8
535-T-N3 18.0 68.0 316 SS 300 22 1.062 117 80
535-T-N5 PVC 100 8
535-T-N7 316 SS 100 8
547-T-N3 30.0 113.0 316 SS 200 15 1.062 144 80
547-T-N5 PVC 100 8
547-T-N7 316 SS 100 8
562-T-N3 40.0 151.0 316 SS 175 13 2.0 72 95
562-T-N7 316 SS 100 8
565-T-N3 65.0 246.0 316 SS 175 13 2.0 117 95
565-T-N7 316 SS 100 8
567-T-N3 80.0 302.0 316 SS 175 13 2.0 144 95
567-T-N7 316 SS 100 8

Notes:
Models 547, 562, 565 and 567 are furnished with a 1/2 HP motor.
Viton tube and O-rings are standard. EPDM is available.


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