▼ Shown from left to right: ZU4304ME, ZU4420SE-H, ZU4304PE-K
ZU4-Series, Portable Enerpac Electric Pumps
Product images are for reference purposes only and may differ from the actual product.

ZU4-Series, Portable Electric Pumps

The Enerpac ZU4-Series, Portable Electric Pumps are tough, dependable and innovative. 

  • Reservoir Capacity: 4,40 litres
  • Flow at Rated Pressure: 1,0 l/min
  • Maximum Operating Pressure: 700 bar
  • Motor Size: 1,25 kW

ZU4-SERIES PRODUCT DESCRIPTION

  • High-efficiency two-speed pump design – higher oil flow and bypass pressure
  • Powerful 1,25 kW universal electric motor provides high power-to-weight ration and excellent low-voltage operating characteristics
  • High-strength, moulded composite shroud protects motor and electronics, while providing and ergonomic, non-conductive handle for easy transport

Pro-Series models only

  • Back-lit LCD readout provides pressure display and a number of diagnostics and readout capabilities never offered on a portable pump before
    • pump usage information, hour and cycle counts
    • self-test, diagnostics and read-out capabilities
    • pressure readout and auto-mode pressure settings

Select the model that suits your application. For special requirements please refer to the custom build section below.

zu4-series-pump-comparison

View all the series comparison in the catalogue. 

1) See valves section for technical information on valve types
2) See custom order matrix on page 103 in the catalogue for other voltage options
3) Substract 1,4kg for Standard (STD) Electric models
4) ZU47… pump models have VM22 3-way, 2 position manual valve for foundation repair applications

Gauges
Minimise the risk of overloading and ensure long, dependable service from your equipment. 

Hoses
Kiloton offers a complete line of high quality Enerpac hydraulic hoses. To ensure the integrity of your system, specify only hydraulic hoses.

Heat Exchanger 
A Heat Exchanger can be factory installed on ZU4-Series Classic, Standard Electric and Pro Electric models.

BENEFITS

  • Extends system life
  • Stabilizes oil temperature at a maximum of 54°C at 21°C ambient temperature

Do not extend maximum oil flow and pressure ratings. Heat exchanger is not suitable for water-glycol or high water based fluids. 

Thermal Transfer * Maximum Pressure Maximum Oil Flow Voltage
btu/h kJoule (bar) (l/min) (VDC)
900 950 20,7 26,5 12

*At 1,19 l/min at 21°C ambient temperature

OPTIONS 

Classic Electric Pumps

  • The Classic has traditional electro-mechanical components (transformers, relays and switches) in place for solid-state electronics. The Classic delivers durable, safe and efficient hydraulic power for demanding markets like construction, post-tensioning and foundation repair.

Standard Electric Pumps

  • For applications that do not require digital display features of the Premium Pump. Available in all manual or jog versions.

Pro Electric Pumps

  • Digital (LCD) display features a built-in hour meter and shows self-diagnostics cycle-count and low voltage warning information.
  • Pressure can also be displayed when the pump is equipped with an optional pressure transducer.

ACCESSORIES

Pressure Transducer *

  • More durable than analog gauges (against mechanical and hydraulic shock)
  • More accurate than analog gauges (0,5% full scale pump)
  • Calibration can be fine tuned for certification
  • “Set pressure” features turns off motor at user defined pressure (or shifts valve to neutral on models with VE33 / VE43 valves)
  • Display pressure in bar, psi or MPa. (*Requires LCD Electric)

Accessory Kit Model Nr 

 Adjustable Pressure Range Switch-point repeatability Dead-band
(bar) (bar)
ZPT-U4 * 3,5 – 700 -0,005 3,5

*Add suffix T for factory installation.

Level / Temperature Switch 

  • Ensures feedback on pump oil level and temperature
  • Drop-in design allows for easy installation to pump reservoir
  • Plugs directly into pump electrical enclosure
  • Built-in thermal sensing shuts off pump when unsafe operating temperature is reached.
  • Oil level switch shuts down pump before oil reaches an unsafe operating level.

Model Number Operating Temperature Maximum Pressure Weight
(°C) (bar) (kg)
ZLS-US4* 5-110 10 0,1

*Add suffix L for factory installation.

Foot Switch

  • Hands-free remote control on solenoid dump and 3-position valves
  • With 3 meters cord

Accessory Kit Model Nr.   Can be used on ZU4-Series Pumps with
ZCF-2* Solenoid VE-Series valves

* Add suffix U for factory installation.

Roll Cage

  • Protects pump
  • Provides greater pump stability

Accessory Kit Model Nr.  Fits on reservoir
ZRC-04* 4 and 8 liters 1)
ZRC-04H* 4 and 8 liters 2)
ZRB-10* 10 liters
ZRB-20* 20 liters
ZRB-40* 40 liters

* Add suffix R for factory installation
1) Without heat exchanger
2) With heat exchanger

Skid Bar

  • Provides easy two-hand lift
  • Provides greater pump stability on soft or uneven surfaces

Accessory Kit Model Nr.  Fits on reservoir Weight (kg)
SBZ-4* 4 and 8 | without heat exchanger 2,2
SBZ-4L* 4 and 8 | with heat exchanger 3,2

* Add suffix K for factory installation. 

Return Line Filter 

  • 25 micron filter removes contaminants from return oil flow
  • By-pass valve prevents damage if filter is dirty
  • With maintenance indicator

Accessory Kit Model Nr. Maximum Pressure Maximum Oil Flow By-pass Setting
(bar) (l/min) (bar)
ZPF* 13,8 45,4 1,7

* Add suffix F for factory installation. 

Heat Exchanger

  • Removes heat from by-pass oil to provide cooler operation
  • Stabilizes oil viscosity, increasing oil life and reduces wear of pump and other hydraulic components. 

Accessory Kit Model Nr. Can be used on Weight
(kg)
ZHE-U115* 115 V Pumps 4,1
ZHE-U230* 230 V Pumps 4,1

* Add suffix H for factory installation. 

Custom build your ZU4-Series Pump

If the ZU4-Series pump that would best fit your application cannot be found in the technical data, you can easily build your custom ZU4-Series pump here.

This is how a ZU4-Series pump model is built up:

  • Z: Product Type
  • U: Motor Type 
  • 4: Flow Group
  • 1: Valve Type
  • 04: Reservoir Size
  • D: Valve Operation
  • E:Motor Voltage
  • HKT: Options and Accessories
  1. Product Type
    1. Z = Pump Series
  2. Motor Type
    1. U = Universal Electric Motor
  3. Flow Group
    1. 4 = 1,01 l/min @ 700bar
  4. Valve Type
    1. 1 = Dump (VE32D)
    2. 2 = 3 way/2 position manual or electric (VM32 or VE32)
    3. 3 = 3 way/3 position manual or electric (VM33 or VE33)
    4. 4 = 4 way/ 3 position manual or electric (VM43 or VE43)
    5. 6 = 3 way/3 position locking manual w/po check (VM33L)
    6. 7 = 3 way/2 position manual (VM22)
    7. 8 = 4 way/3 position locking manual w/po check (VM43L)
    8. 9 = 4 way/3 position manual w/power seating (VM43LPS)
    9. 10 = 3 way/3 position manual Venturi valve (VM33VAC)
    10. 11 = 4 way/3 position electric Venturi valve (VM33VAC)
    11. 12 = 3 way/3 position manual locking Venturi valve (VM33LVAC)
  5. Reservoir Size (useable capacity)
    1. 04 = 4 litres
    2. 08 = 8 litres
    3. 10 = 10 litres (reservoir includes side handles)
    4. 20 = 20 litres (reservoir includes side handles)
    5. 40 = 40 litres (reservoir includes side handles)
  6. Valve Operation
    1. D = Dump (solenoid valve w/pendant and LCD Electric)
    2. J = Jog (manual valve w/pendant and Standard Electric (i.e. w/o LCD)
    3. K = Jog (manual valve w/pendant and LCD Electric)
    4. L= Manual valve w/LCD Electric (w/o pendant)
    5. P= Manual valve w/Classic electric (i.e. w/o LCD) (w/o pendant)
    6. R = Manual valve w/classic electric (i.e. w/o LCD) (w/o pendant)
    7. M = Manual valve w/standard Electric (i.e. w/o LCD) (w/o pendant)
    8. S = Solenoid valve w/pendant and LCD electric
  7. Voltage
    1. B = 115V, 1 ph, 50/60Hz
    2. E = 208-240V, 1 ph, 50/60 Hz (with European plug and CE EMC compliant)
    3. I = 208-240V, 1 ph, 50/60Hz (with NEMA 6-15 plug)
  1. Options and Accessories (View Options and Accessories tab for more information)
    1. F = Filter
    2. G = 0-1000 bar pressure gauge (ø 63.5mm) 1)
    3. H = Heat exchanger
    4. K = Skid Bar ( 4 and 8 litres reservoir only)
    5. L = Level/temperature switch 2) 3)
    6. N = No reservoir handles (including lifting eyes)
    7. R = Roll Cage
    8. T = Pressure transducer 2)
    9. U = Foot switch
  • Pressure gauge not available on pump models with pressure transducer
  • These options require Pro Electric
  • Not available on 4 and 8 litres reservoirs