Truck-Mounted Nitrogen Unit

Our Hydra Rig truck-mounted nitrogen units can be customized to fit your operational needs—in both non-fired and direct-fired configurations.


Designed with a condensed footprint for hard-to-access locations.

They come standard with a main engine, transmission, reduction/drop box, triplex nitrogen pump, nitrogen boost pump, direct-fired vaporizer, hydraulics, liquid nitrogen storage tank, and necessary piping and controls. These models can be built on any major brand of truck chassis.


  • Control cabin versus ground controls
  • Cold ends/rates
  • TCRN

Direct-Fired Pump Specifications


Cold end diameter

Maximum flow

Maximum pressure


2.00 in. (50.80 mm)

400,000 scfh (10 512 m³/hr)

15,000 psi (103 MPa)


2.52 in. (64.00 mm)

640,000 scfh (16 819 m³/hr)

15,000 psi (103 MPa)


2.875 in. (73.03 mm)

840,000 scfh (22 075 m³/hr)

11,000 psi (77 MPa)

Calfrac branded Truck-mounted Nitrogen Uni
PRAXAIR branded Truck-mounted Nitrogen Unit
Legend branded Truck-mounted Nitrogen Uni

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