The VB75 is an integrated unloader for Interpump/General pumps Series 44 & 47, EZ, TX pumps- with 7.8 GPM - 3600 PSI max pressure. Rated pressure: 3200 PSI 200 deg. F 3/8" MPT inlet, 1/4" FPT outlet & bypass 19.7 oz weight Direct Mount for EZ, 47 and 63 Series PumpsPA