NEPTUNE 501-S-N1 PUMP, METERING __.5GPH 1500PSI, CAST IRON HEAD, TFE DIAPHRAGM, --Discontinued! click for info--
NEPTUNE PUMP DRIVE 500-S 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 on this simplex head. Can be field-converted to a 500-D duplex head. Stroke frequency can be fixed or variable.