Abstract: A juice extractor includes a mechanism for supporting the exterior of a fruit and separating the peel therefrom, such as upper and lower cups having cutters to cut plugs. A strainer tube is mounted to receive juice and pulp of the fruit. An orifice tube has upper and lower ends and the upper end is moveable within the strainer tube. A reciprocating drive mechanism engages the orifice tube and reciprocates the orifice tube within the strainer tube for generating pressure within the strainer tube to separate juice and pulp within the strainer tube, collect the core material and discharge core out of the lower end of the orifice tube. A valve assembly is positioned at the lower end of the orifice tube. The valve assembly includes a piston having a shaft moveable into an extended position within the orifice tube, and a retracted position where core can be discharged from the lower end of the orifice tube.