A device 1, wherein the first mentioned orifice which is connectable to atmosphere is larger than {HEAD ~ the second mentioned orifice} which is connectable to {TAIL ~ atmosphere} 
A device 1 , wherein the first mentioned orifice which is connectable to atmosphere is larger than { HEAD ~ the second mentioned orifice } which is connectable to { TAIL ~ atmosphere }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL