Processing Magazine

Hydraulic Diaphragm Metering Pumps

September 19, 2011
Neptune Chemical Pump Co.’s Series 500 hydraulic diaphragm metering pumps feature a Variable Oil By-pass™ stroke adjustment that allows for better valve performance than traditional variable-linkage designs, according to the manufacturer. This allows the valve checks to have extra time to seat even in heavy liquids since they are idle during the by-pass portion of the suction and discharge strokes. Neptune’s Series 500 pumps have simplex flow-rate capabilities of 1 gph (3.7 lph) at pressures up to 1,100 psi (77 KG/cm), while its Series 600 have flow capacities to 240 gph (908 lph) simplex and at pressures up to 4,000 psi (280 KG/cm).