Abstract: A can crusher for flattening cans is provided which has a cylindrical body having a first upstream end and a second downstream end. A fluid cylinder having a piston rod is connected to the first end of the body and a piston rod is mounted within the body and attached to the piston rod for movement from a retracted upstream position to an extended downstream position. A discharge opening is provided in the body adjacent the downstream end thereof. A can receiving opening is provided in the body spaced a distance from the discharge opening at least equal to the maximum can height to be accommodated by the can crusher. A ripper tooth extends longitudinally within the body from the can receiving opening to the discharge opening. A control device selectively supplies hydraulic fluid to opposite ends of the fluid cylinder to move the piston between the retracted position and the extended position to simultaneously drain liquid from the can as it is crushed.