Stop cock valve 24 comprises a valve body 24a and a cylindrical valve member 24b receivable in, and rotatable within, a valve seat 34 of cylindrical bore, disposed {TAIL ~ crosswise} through {HEAD ~ valve body 24a} 
Stop cock valve 24 comprises a valve body 24a and a cylindrical valve member 24b receivable in , and rotatable within , a valve seat 34 of cylindrical bore , disposed { TAIL ~ crosswise } through { HEAD ~ valve body 24a }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD