Apparatus for controlling {HEAD ~ fluid communication} with {TAIL ~ a fluid pressure system} includes parallel flow paths connected to the system 
with
Apparatus for controlling { HEAD ~ fluid communication } with { TAIL ~ a fluid pressure system } includes parallel flow paths connected to the system
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH