Metering Pumps Series 500 "dia-Pump" From Neptune Chemical Pump Company Inc
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.
All Neptune "dia-Pumps" are adjustable from 10% through 100% of capacity by micrometer dial.
Neptune "dia-Pumps" are available in the following materials of construction:
Cast Iron with 316SS Trim
316SS PVC Alloy 20 Kynar