{TAIL ~ The poppet valve assembly} 1 wherein said housing has cutouts for viewing {HEAD ~ said sight glass} 
{ TAIL ~ The poppet valve assembly } 1 wherein said housing has cutouts for viewing { HEAD ~ said sight glass }
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD