*Neptune Pump Note: 1800 psi maximum discharge pressure is only available using optional -FA (or -FALP) AND .50 HP motors. Only 1100 psi maximum is available using -2 or -3 integral .50 HP motors, or using any .33 HP motor. See Motor? options or Product Category = Motors electric for more motor choices.
**Note: With Motor Option "-FA" or "-FALP", the pump and motor are bought as separate Shopping Cart items but are mounted together when shipped. After adding the pump to the Shopping Cart, go to Product Category = Motors electric to purchase a motor, or contact us for any special motor you require.
NEPTUNE PUMP DRIVE 500-D DUPLEX: This Neptune diaphragm metering pump drive has a robust motor-driven gear-reduction and hydraulically actuated disc diaphragms. Features two manual stroke length adjust knobs for this duplex head pump. Stroke frequency can be fixed or variable.
