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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 10% 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 www.P65Warnings.ca.gov

Specification US Metric
Minimum Flow2.1 GPM8 L/min
Maximum Flow26.4 GPM100 L/min
Max Pressure7250 PSI500 bar
Continuous Temperature160 °F70 °C
Inlet Port3/4" BSP
Outlet Port1/2" BSP
Bypass Port1/2" BSP
Weight15.4 lbs.7 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.
ITEM# PART# DESCRIPTION Qty.
Repair Kit – Part #09543
14 06687 Piston 1
15 06715 Seal Support 1
16 06713 Hexagon Nut 1
18 12004 O-Ring 1
21 07392 Support Ring 1
21A 06718 Support Ring 1
22 07391 Seal Pack 1
22A 06717 Seal Ring 1
23 08523 Valve Seat 2
25 07489 O-Ring 2
26 12057 O-Ring 2
29 08531 Valve Plate 1
30 12216 Valve Spring 1

Literature

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  • Giant Industries Limited Warranty
  • 22980 Literature

Materials

Sample Pump

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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.

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