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