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