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](https://www.giantpumps.com/wp-content/uploads/2015/06/22530A_31A_32A_33A.jpg)
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.