{HEAD ~ A second source} of seal air is provided from {TAIL ~ a tap port} disposed at a predetermined location on the compressor discharge 
is provided from
{ HEAD ~ A second source } of seal air is provided from { TAIL ~ a tap port } disposed at a predetermined location on the compressor discharge
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH