Start with what the hydraulic circuit needs: ZU4408PB is an Enerpac ZU4 Electric Hydraulic Pump arranged for double-acting advance / hold / retract operation. Its four-way style of control is appropriate where both directions are hydraulically powered, while the center hold position allows movement to be paused between commands.
Enerpac configures ZU4 pumps for several hydraulic tasks, including standard cylinder operation and torque-wrench service. The valve and control package identify the intended use. Valve selection on this model is deliberate: a 4-way, 3-position manual valve handles advance / hold / retract operation for double-acting equipment. This model is built for 115V, single phase, 50/60 Hz power, making the electrical supply an important distinction from otherwise similar variants.
Before Specifying ZU4408PB
To avoid selecting a near-match with the wrong configuration, compare ZU4408PB with ZU4408MB: pendant control is Yes on ZU4408PB versus No on ZU4408MB.
Verify site power against the 115V requirement; a nearby suffix may represent a different electrical version.
The 1.8 gal reservoir determines how much oil is available to the connected hydraulic circuit and should be checked against total cylinder or tool volume.
Specifications
| Pump Series | ZU4 Series |
|---|---|
| Power Source | Electric |
| Maximum Operating Pressure | 10,000 psi |
| Rated Oil Flow | 60 in³/min @ 10,000 psi |
| Reservoir Capacity | 1.8 gal |
| Valve Model | VM43 |
| Valve Configuration | 4-way, 3-position manual valve |
| Valve Operation | Manual |
| Cylinder Compatibility | Double-Acting |
| Voltage | 115V |
| Phase | Single Phase |
| Frequency | 50/60 Hz |