a scroll machine includes a shell defining a discharge chamber , a first scroll member having a first spiral wrap projecting outwardly from a first end cap , a second scroll member having a second spiral wrap projecting outwardly from a second end cap intermeshed with the first spiral wrap , and a drive member causing the scroll members to orbit relative to one another . the spiral wraps create pockets of progressively changing volume between a suction pressure zone and a discharge pressure zone with the discharge pressure zone being in communication with the discharge chamber . a discharge valve assembly is disposed between the discharge pressure zone and the discharge chamber and is movable relative to the first scroll member . the discharge valve assembly includes a valve plate movable between a first open state and a closed state .