• 4540B UNx Fluid End Upgrade 4240-Section

4540B UNx Fluid End Upgrade - #8 Plungers

Part No: 53770

Increase productivity and reduce operating cost with a UNx® Fluid End Upgrade. Flow up to 11.6 gpm (44 l/min) at 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 4540B
Maximum Power (hp) 300
Maximum Operating Pressure (psi) 40000
Maximum Flow (gpm) 11.6
Maximum Power (kW) 224
Maximum Operating Pressure (bar) 2750
Maximum Flow (l/min) 44
Plunger Size #8
Plunger Diameter (in) 0.73
Plunger Diameter (mm) 18.54
Number of Plungers 3
Plunger Stroke (in) 4.5
Plunger Stroke (mm) 114
Discharge Port Connection Jetstream 20K Port Female
Accessory Port Connections Jetstream 20K Port Female
Number of Accessory Ports 3
Suction Port Connection 2"NPT Female
Maximum Pump Speed (RPM) 500
Flow at 150 RPM (gpm) 3.7
Flow at 200 RPM (gpm) 4.9
Flow at 300 RPM (gpm) 7.3
Flow at 400 RPM (gpm) 9.8
Flow at 500 RPM (gpm) 12.2
Flow per Revolution (gal/rev) 0.0245
Flow at 150 RPM (l/min) 14
Flow at 200 RPM (l/min) 19
Flow at 300 RPM (l/min) 28
Flow at 400 RPM (l/min) 37
Flow at 500 RPM (l/min) 46
Flow per Revolution (l/rev) 0.093

UNx Conversion Video

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

40K Bypass Valve - Pump Mount

A bypass valve diverts a portion of pump flow to a low- pressure outlet and is used to prevent bogging of diesel engines when using flows at the low end of the pump’s capability or to adjust pressure on electric motor driven systems.  40,000 psi (2750 bar).  Pump-mounted.

40K Handle-Adjustable Regulator

Maintains constant system pressure when operating one or more shut-in devices. Knob-adjustable. Field-replaceable valve cartridge. For operation at 20,000 - 40,000 psi (1400 - 2750 bar). Pump-mounted.

UNx Spare Parts Packages

Packages include all major fluid end replacement packaged together for easy transport and storage.

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.