{HEAD ~ The valve} protects {TAIL ~ the ink} in the ink supply from contaminants that can migrate up the ink line during shut down periods 
protects
{ HEAD ~ The valve } protects { TAIL ~ the ink } in the ink supply from contaminants that can migrate up the ink line during shut down periods
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH