{HEAD ~ Apparatus} used in rebuilding {TAIL ~ the seat pocket} in a valve body, comprising: 
used in rebuilding
{ HEAD ~ Apparatus } used in rebuilding { TAIL ~ the seat pocket } in a valve body , comprising :
HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH