Giant 22533A 3/8 NPT  5000 PSI Pressure Washer Pump Safety Pop Off Valve - Brass

This valve is designed to relieve the system of higher than normal pressures.  It is normally set at 15-20% above the normal operating pressure.  Once the pressure falls below the set point, it will automatically re-set.  It will operate in this manner for a limited number of times.

This valve does not arrive pre-set. A pressure gauge is required to set. 

Maximum Flow: 10 GPM  Minimum Flow: 1 GPM
Maximum Temperature: 160 F  
Inlet Port:  3/8
Outlet Port: 3/4" Hose Barb 
Min. Pressure 3600 Psi Max. Pressure  5,000 Psi
Dimensions: 0.75" X 2.06" 






Featured Image for 22533A
1) Position the pop-off valve on the discharge side of the pumping unit between the pump and the unloader.
   3/8" MNPT is the inlet. (Mount unit directly onto the pump for best results.)
2) Adjust the valve relief pressure setting as follows
. Start the pump with the shut-off gun open and adjust the system pressure to 600 PSI (minimum) above the normal operating pressure.
 b. If the valve opens or leaks, stop the pump.
 c. Use a 1/4 inch allen wrench to turn the adjusting screw clockwise to increase the pressure so that the spring is compressed. d. Repeat steps a-c (above) until the valve does not open or leak at a minimum of 600 PSI above the normal operating pressure.
 3) Reset the system pressure back to the normal operation.
 4) A hose may be clamped over the outlet of the valve if desired. The other end of the hose may then be placed in a sewer, float tank, or other suitable drain.