When the amount of gas necessary to fill the bladder is confirmed by a sensor, the fill valve will close and {HEAD ~ a signal} sent to {TAIL ~ the pressure pump} on the hydraulic system to pump hydraulic fluid into the annulus between the bladder and steel cylinder 
sent to
When the amount of gas necessary to fill the bladder is confirmed by a sensor , the fill valve will close and { HEAD ~ a signal } sent to { TAIL ~ the pressure pump } on the hydraulic system to pump hydraulic fluid into the annulus between the bladder and steel cylinder
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH