{TAIL ~ A diaphragm} is biased into sealing engagement with the valve seat to provide a fluid seal between {HEAD ~ the ink inlet} and the ink outlet 
{ TAIL ~ A diaphragm } is biased into sealing engagement with the valve seat to provide a fluid seal between { HEAD ~ the ink inlet } and the ink outlet
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH