NEPTUNE 520-A-N1 PUMP, METERING __2GPH _700PSI, CAST IRON HEAD, TFE DIAPHRAGM, --Discontinued! click for info--
NEPTUNE PUMP DRIVE 500-A SIMPLEX: 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 simplex-only pump. Stroke frequency can be fixed or variable.