In various arrangements, {HEAD ~ the threaded collar} is sized for {TAIL ~ threaded engagement} with an inlet or outlet of the storage tank, a drain opening of the tank, or a pressure relief valve of the tank 
is sized for
In various arrangements , { HEAD ~ the threaded collar } is sized for { TAIL ~ threaded engagement } with an inlet or outlet of the storage tank , a drain opening of the tank , or a pressure relief valve of the tank
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL 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