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