Discover the PVC/PTFE Orifice Plate Flowmeters, designed for gases and liquids. Available in sizes from 1/2" to 24", they ensure reliable flow measurement with easy installation. PTFE orifice plate flowmeter, 3" line size, 2.150" bore, 0.7 Beta, water capacity: 320" d.p. W/C, 324.16 GPM flow; air capacity: 816.7 SCFM @ 14.7 psia, 1404.95 SCFM @ 20 psig, 2696.28 SCFM @ 100 psig; 2 lb.