The device 1, wherein said housing includes an outlet connection communicating with said outlet chamber for connection to {HEAD ~ a pressure indicator} for indicating {TAIL ~ the pressure} in the outlet chamber 
for indicating
The device 1 , wherein said housing includes an outlet connection communicating with said outlet chamber for connection to { HEAD ~ a pressure indicator } for indicating { TAIL ~ the pressure } in the outlet chamber
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 HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH