In one embodiment, {HEAD ~ a valve} is secured to {TAIL ~ a distribution conduit} in fluid communication with a pressurized source of fluid 
In one embodiment , { HEAD ~ a valve } is secured to { TAIL ~ a distribution conduit } in fluid communication with a pressurized source of fluid
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH