NEPTUNE 535-E-N1 PUMP, METERING _18GPH _350PSI, CAST IRON ECONO HEAD, TFE DIAPHRAGM, --Discontinued! click for info--
NEPTUNE PUMP DRIVE 500-E ECONOMY: This Neptune diaphragm metering pump drive has a robust motor-driven gear-reduction and hydraulically actuated disc diaphragm. Features one manual stroke length adjust knob for the economical simplex head with economical checks. Stroke frequency can be fixed or variable.