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A Series VB 33 brass unloader with a max flow of 21 GPM and a max pressure of 4500 PSI.
This unloader accessory features a 1/2" FPT inlet, outlet and bybass. Also features a1/4" FPT gauge port. Comet VB unloaders help to safeguard your pumps and system against high pressure damage. Adjustable using the black knob.