Skip to main content
Featured Image for 23295

Pressure-actuated valves control the flow of the water to the nozzle(s). During bypass mode, all of the water is directed back to the supply at nearly zero pressure. This valve is typically used in applications in which frequent on/off action is required at the nozzle, such as; pressure washer, central cleaning station or hydro-excavation. While slightly different design concepts are used, these unloaders typically will actuate at 5 to 20% above the operating pressure of the system.

Flow ranges are from 0.5 GPM (2 l/min) to 625 GPM (2366 L/min) and pressure range is from 100 PSI to 50,750 PSI (7 to 3500 Bar). In lower pressure applications, a manually adjusted spring is used to control the flow; however, pneumatic and electric controls can also be used. Typical metal materials are forged brass, 303 stainless steel, 316 stainless steel and elastomers will be either Nitrile, Viton or Teflon.

For individual specifications see below.

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 Flow6.6 GPM25 L/min
Min Pressure0 PSI0 bar
Max Pressure2000 PSI140 bar
Temperature Rating194 °F90 °C
Inlet Port3/8" FNPT
Bypass Port3/8" FNPT
Discharge Port with Injector3/8" MNPT
Discharge Port with Injector3/8" FNPT
Weight2 lbs.0.91 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.
Full Repair Kit – Part #09321
4 07770 O-Ring 1
5 08553 Support Ring 1
6 07915 O-Ring, Piston 2
8 08691 Piston 1
9 22659 O-ring 1
10 08563 Seat 1
17 08559 Support Ring 1
18 12326 O-Ring 1
19 07913 O-Ring 1
23 08564 O-Ring 1
Seal Repair Kit – Part #09322
4 07770 O-Ring 1
5 08553 Support Ring 1
6 07915 O-ring, Piston 2
9 22659 O-Ring 1
17 08559 Support Ring 1
18 12326 O-Ring 1
19 07913 O-Ring 1
23 08564 O-Ring 1


Documents open in new window/tab.

  • Giant Industries Limited Warranty
  • 23295 Literature


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