EP-4 Prelube Oil Pumps


The EP-4 pump is designed from the ground up to be the ideal prelube oil pump for diesel and natural gas Engine Prelube. EP4 Diesel Engine Prelube Pump It performs well with high viscosity oils down to very cold temperatures. As a positive displacement pump it will self prime and is more efficient and quieter than a gear pump.

The EP-4 is powered by a self-contained TENV motor rated for both 12 and 24 Volts DC power systems. Both voltages are capable of pressures in excess of 60 psi (4 bar).

These pumps also incorporate a self-contained low loss check valve to prevent backflow. This is a critical component in any prelube system so that when the main oil pump is running it cannot spill pressure through the prelube system. By including it in the pump the EP-4 reduces the cost of the prelube system as a whole. These pumps are more quiet than a gear design due to their "whisper vane" pump technology. Call for a trial unit today.


EP4PerformanceGraphWeb (4K)

XD4DutyCycleGraph (12K)

EP-4 @ 24VDC Features and Specifications

  • Self-contained TENV motor Rated for 24vdc (Not for Continuous Duty)
  • 4 GPM (15 l/m) flow rate
  • Pressures in excess of 60 psi (4 bar)
  • Integrated low loss check valve
  • Whisper-Vane positive displacement vane technology
  • Suction port SAE straight thread O-ring size: 3/4" (19mm)
  • Discharge port SAE straight thread O-ring size: 3/4" (19mm)
  • Designed for 500-3000hp (370-2230kw) diesel engine applications

EP-4 @ 12VDC Features and Specifications

  • Self-contained TENV motor Rated for 12vdc (Not for Continuous Duty)
  • 1.75 GPM (6.6 l/m) flow rate
  • Pressures in excess of 60 psi (4 bar)
  • Integrated low loss check valve
  • Whisper-Vane positive displacement vane technology
  • Suction port SAE straight thread O-ring size: 3/4" (19mm)
  • Discharge port SAE straight thread O-ring size: 3/4" (19mm)
  • Designed for 400 - 800hp (300-600kw) diesel engine applications

Feature and Specifications Comparison
@ 24VDC
@ 12VDC
Flow rate
4 gpm
(15 l/m)
1.7 gpm
(6.6 l/m)
Attainable pressure
60psi
(4 bar)
60psi
(4 bar)
Integrated low loss check valve
Y
Y
Whisper-Vane positive displacement vane technology, Self Priming
Y
Y
Suction port SAE straight thread O-ring size:
3/4"
(19mm)
3/4"
(19mm)
Discharge port SAE straight thread O-ring size:
3/4"
(19mm)
3/4"
(19mm)

EP4_Shot64_150px (53K)

Wetted Materials

  • Anodized Aluminum 6061-T6
  • Carburized Carbon Steel
  • Rubber Viton V884

For a PDF Data Sheet on this pump
Click Here.


For info. about Prelube and what it can do for your engine Click Here.
For larger, more sophisticated installations that have AC or compressed air power available the VARNA CF-15 prelube pump mounts to any 56C-Face motor.
To inquire about any of our pumps Click Here, or Call 888-676-7770.

Efficiency is the art of getting the most useful work done with the least energy input. Many commodity pumps are designed to do everything poorly. Varna pumps are not right for every application but they can often get 'the job done' with half the motor of a lesser pump, saving the owner money up front and every day the pumps runs. Now that's efficiency!


Customer Feedback "I am in love with these pumps. The best feature is that I can dead head the pump and there is no screaming PRV."
Wes Blankenship of Symbrium, Inc.


Article Link
Considerations in wiring power to a prelube pump


We believe the less the end user has to think about our product the better job we did.

Give us a call!

Let's talk about what VARNA Products can do for you.

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888.676.7770 | 2016