Start with what the hydraulic circuit needs: ZU4320MB is an Enerpac ZU4 Electric Hydraulic Pump arranged for single-acting advance / hold / retract operation. The 5.2 gal reservoir is at the larger end of this series, providing more available oil volume than the smaller-reservoir variants.
The closest same-series alternative is ZU4308MB. The useful difference is that reservoir capacity is 5.2 gal on ZU4320MB versus 1.8 gal on ZU4308MB. Choose between them from the circuit and site requirements rather than from appearance.
Where ZU4320MB Fits in the Pump Family
ZU4 pumps share Enerpac’s Z-Class architecture, but valve type, reservoir size and control package vary substantially from model to model. Power input is 115V, single phase, 50/60 Hz. That requirement should be matched to the facility, generator or jobsite supply. This pump carries a 5.2 gal reservoir. That capacity is a practical selection factor when comparing otherwise similar valve and voltage configurations.
Confirm that the connected equipment uses the single-acting circuit this model is configured to control.
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 | 5.2 gal |
| Valve Model | VM33 |
| Valve Configuration | 3-way, 3-position manual valve |
| Valve Operation | Manual |
| Cylinder Compatibility | Single-Acting |
| Voltage | 115V |
| Phase | Single Phase |
| Frequency | 50/60 Hz |