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This is a pressure-actuated regulator that is designed for any that fits within the flow and pressure range of the regulator.  The regulator determines the direction of the flow in the system and maintains system pressure via an adjustable nut that controls the amount of tension on a pressure spring.  When the water flow stops, it is diverted through the bypass port at virtually no pressure.  The regulator 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 regulator).  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

Specification US Metric
Maximum Flow35.7 GPM135 L/min
Min Pressure580 PSI40 bar
Max Pressure1740 PSI120 bar
Temperature Rating158 °F70 °C
Inlet Port3/4" FNPT
Outlet Port3/4" FNPT
Bypass Port3/4" BSP
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 #09461
2A 12241 Guide Ring 1
3 12057 O-Ring 1
6 12204 O-Ring, Valve Stem 1
7 12205 Back Up Ring, Valve Stem 1
9 05005 Cup, 28MM 1
10 05015 Back Up Ring, 28MM 1
11 12207 Ball 1
12 12216 Valve Spring 1
12A 03402 Seat, Inlet 1
14 12244 Valve Plate 1
14C 07035 O-Ring 2
14D 06017-0100 Spring, Outlet Valve 1
19A 12017 O-Ring, Plug 4


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  • Giant Industries Limited Warranty
  • 22971CR Literature



Sample Pump

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