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