A valve body formed from a single piece of {TAIL ~ pliable material} is mounted in the passage of {HEAD ~ the housing} 
A valve body formed from a single piece of { TAIL ~ pliable material } is mounted in the passage of { HEAD ~ the housing }
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD