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