Dynastar hydraulic pump 1:1 fluid pressure ratio for oil dispensing, universal drum size, maximum input pressure 1500psi, maximum fluid input volume 3gpm, maximum fluid output rate 3gpm, maximum 60cpm, maximum fluid output pressure 1500psi, 3/8" NPT hydraulic supply inlet, 3/4" NPT hydraulic return inlet, 1/2" NPT fluid outlet, 1 1/2" NPT fluid inlet maximum incoming fluid temperature 130F