u/No-Organization-2476

External bypass hose keeps blowing off on AR XRV 4G.32 pump, bad unloader?

I have an older pressure washer with an Annovi Reverberi XRV 4G.32 pump rated 4 GPM / 3200 PSI / 3400 RPM.

The small external bypass/return hose from the unloader keeps failing. I have replaced the hose multiple times. Sometimes it blows off the barb fitting, and other times it gets a hole and sprays water. I tried turning the pressure knob all the way down, starting the machine while holding the spray gun trigger open, and slowly increasing pressure, but the hose still blew off again.

If you can help please lmk