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, 1" line size, 0.720" bore, 0.69 Beta, water capacity: 320" d.p. W/C, 36.15 GPM flow; air capacity: 91.28 SCFM @ 14.7 psia, 156.51 SCFM @ 20 psig, 300 SCFM @ 100 psig; 1 lb.