The Neptune Series 500 pumps feature a variable oil bypass stroke adjustment that allows for better valve performance than traditional variable-linkage designs. This allows the valve checks to have extra time to seat even in heavy liquids since they are idle during the bypass portion of the suction and discharge strokes. Other features of the Series 500 pumps include the ability to be adjustable from 10 to 100 percent of capacity via micrometer dial and EZE-CLEAN valve cartridges that can be removed for cleaning without disturbing the piping to the pump. The pumps have capabilities to 80 gph (302 lph) simplex and 160 gph (605 lph) duplex at pressures up to 3,000 psi (210 kg/cm).
Neptune Chemical Pump Co., Inc.P.O. Box 247