Skip to main content
Featured Image for 22095-4000

This is a pressure-actuated unloader that is designed for any pump that fits within the flow and pressure range of the unloader.  The unloader regulates the flow in the system and maintains system pressure via an adjustable nut that controls the amount of tension on a pressure spring.  When no flow is going out the outlet port, all flow is diverted to the bypass port at virtually no pressure.  The unloader is capable of handling one or more shut-off guns and should be run with no bypass (if the full flow from the pump is going through the unloader).  It actuates at around 20% above the system pressure.

WARNING: This product might contain a chemical known to the State of California to cause cancer, and birth defects or other reproductive harm. For more information go to

Specification US Metric
Maximum Flow, Side Inlet21.1 GPM80 bar
Maximum Flow, Bottom Inlet7.9 GPM30 bar
Min Pressure580-5800 PSI40-4000 bar
Max Pressure6500 PSI450 bar
Intermittent Temperature194 °F90 °C
Continuous Temperature140 °F60 °C
Inlet Port1/2" FNPT
Outlet Port1/2" FNPT
Bypass Port1/2" FNPT
Weight6.7 lbs.3 kg
The repair kits listed to the right are available for this pump. If you need further information about these repair kits, or have questions about other specific parts for your pump, please contact you local Giant distributor or contact Giant customer service.
Repair Kit – Part #09188
2 08758 Back Up Ring 2
3 08773 O-Ring, Nitrile 1
4 08719 O-Ring, Nitrile 3
10 08778 O-ring, Nitrile 1
11 08761 Back Up Ring 1
15 08727 Ball 1
16 08754 O-ring, Nitrile 1
17 008751 Seat 1
21 08770 O-Ring, Nitrile 1


Documents open in new window/tab.

  • Giant Industries Limited Warranty
  • 22095-4000 Literature


316 Stainless Steel

Sample Pump

Our Company

For 50 years, Giant Pumps has offered the most dependable positive displacement high-pressure triplex pumps available. Designed and built to the highest quality standards, customers count on Giant Pumps products to keep their equipment running. Every design detail of Giant Pumps products is optimized for long-life and reliable performance, making Giant Pumps the most trusted name in high-pressure pumps and systems.

Learn More

Join Our Newsletter

Get the latest updates from Giant Pumps delivered right to your inbox!

Subscribe to the Giant Newsletter

Back to Top