A fluid seal assembly for a rotary valve comprising {TAIL ~ a valve housing} having a cylindrical valve opening and {HEAD ~ a rotary valve sleeve} in said valve opening 
A fluid seal assembly for a rotary valve comprising { TAIL ~ a valve housing } having a cylindrical valve opening and { HEAD ~ a rotary valve sleeve } in said valve opening
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH