NEPTUNE 500-A-N1 PUMP, METERING 0.8GPH 1000PSI, CAST IRON HEAD, TEFLON 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.