These are pressure relief valves which protect the pump and other high pressure components from over-pressurization.  After removing the dangerous high pressure from the system, they are able to re-set, but should eventually be replaced as frequent use minimizes their effectiveness.  In particular, they should be used whenever a pressure actuated unloader or pressure actuated regulator is used as these devices can eventually fail over time.  They are designed to relieve flow up to 10 GPM (38 L/min) and are capable of pressures up to 5000 PSI (345 Bar).  Materials available are brass and stainless steel. These accessories are related to a pop-off valve, but are made for more repeated use.  They are pressure relief valves which protect the pump and other high pressure components from over-pressurization.  After removing the dangerous high pressure from the system, they are able to re-set.  Like the pop-off valve, they should be used whenever a pressure actuated unloader or pressure actuated regulator is used as these devices can eventually fail over time.  They are designed to relieve flow up to 624 GPM (2361 L/min) and are capable of pressures up to 58,000 PSI (4000 Bar).  Materials available are brass and 316 stainless steel.

Model PressureFittingMaterial
22530A 1200 PSI
83 bar
3/8" Brass
22530A-5100 1200 PSI
83 bar
3/8" Stainless Steel
22531A 2400 PSI
165 bar
3/8" Brass
22531A-5100 2400 PSI
165 bar
3/8" Stainless Steel
22532A 3600 PSI
248 bar
3/8" Brass
22532A-5100 3600 PSI
248 bar
3/8" Stainless Steel
22533A 5000 PSI
345 bar
3/8" Brass
22533A-5100 5000 PSI
345 bar
3/8" Stainless Steel
22550A 1200 PSI
83 bar
1/4" Brass
22560A 2400 PSI
165 bar
1/4" Brass
22565A 3600 PSI
248 bar
1/4" Brass
22568 5000 PSI
345 bar
1/4" Brass
ACCESSORIES
Service & Repair

Giant provides service on each pump and accessory that we sell. Many basic repair procedures are covered in the Giant repair manual. For all other questions on service or repair needs please contact your local Giant distributor.