In one embodiment, grooves are formed in {HEAD ~ the fixed scroll member} to communicate a selected intermediate pressure and {TAIL ~ a discharge pressure} to locations on the base plate of the fixed scroll member 
to communicate
In one embodiment , grooves are formed in { HEAD ~ the fixed scroll member } to communicate a selected intermediate pressure and { TAIL ~ a discharge pressure } to locations on the base plate of the fixed scroll member
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH