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