I've selected a 2" Restriction Orifice RO bore size 0.54" with process condition P1=790kPag, P2=110kPag, Q=18350 Sm3/d, T=15C on Utility Air. The sizing tells me I have critical dP=418 kPa meaning my predicted P2=372kPag. Is it true even though the RO is at choke flow and can only handle press...