• 4500B UNx Fluid End Upgrade UNx-Cutaway 4240-Section

4500B UNx Fluid End Upgrades

Increase productivity and reduce operating cost with a UNx® Fluid End Upgrade. Operating pressure up to 40,000 psi (2750 bar). Designed to fit Butterworth L-450, Gardner-Denver TF-450, and others.

The Jetstream UNx Fluid End Upgrade is ideal for replacing a damaged, costly, or unreliable fluid end. It is also a cost-effective solution to increase the availability operating pressure or range of pressures for those who have already converted to the UNx. The upgrade delivers all of the benefits of the UNx Fluid End design.

  • Three plunger (triplex) design
  • Superior performance
  • Greater flexibility in the field
  • Reduced downtime and maintenance
  • Clamp-style plungers
  • Bolt-on installation requires only minutes
  • Once upgraded to the UNx design, the unit can be supplemented with additional fluid ends to expand its range of operating pressures.
    Model Name Plunger Size Plunger Diameter (in) Plunger Diameter (mm) Maximum Operating Pressure (psi) Maximum Operating Pressure (bar) Maximum Flow (gpm) Maximum Flow (l/min) Maximum Power (hp) Maximum Power (kW)
J55775 4515B #16 1.67 42.42 8000 550 58.1 220 300 224
51860 4515B #15 1.5 38.1 10000 700 46.5 176 300 224
51855 4515B #13 1.335 33.91 12000 825 38.8 147 300 224
51850 4515B #12 1.2 30.48 15000 1000 31 117 300 224
51845 4515B #11 1.1 27.94 15000 1000 27.8 105 260 194
51840 4515B #10 0.98 24.89 15000 1000 22.1 84 215 160
55263 4520B #11 1.062 26.97 20000 1400 23.3 88 300 224
53660 4520B #10 0.98 24.89 20000 1400 22.1 84 285 213
54780 4520B #9 0.9 22.86 20000 1400 18.6 70 260 194
52090 4520B #8 0.8 20.32 20000 1400 14.7 56 190 142
53770 4540B #8 0.73 18.54 40000 2750 11.6 44 300 224
53765 4540B #7 0.67 17.02 40000 2750 10.3 39 260 194
53760 4540B #6 0.6 15.24 40000 2750 8.3 31 215 160

UNx Conversion Video

This video highlights the ease of maintenance and pressure convertibility of Jetstream UNx Pump. (3:59)