In one example, an example internal valve includes a body having a valve seat disposed between {HEAD ~ an inlet} and {TAIL ~ an outlet} 
In one example , an example internal valve includes a body having a valve seat disposed between { HEAD ~ an inlet } and { TAIL ~ an outlet }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL