Orifice Plate Flowmeter is a complete orifice plate flow metering package. A few applications include steam flow, boiler feedwater, cooling water, and combustion or compressed air. Orifice plate flowmeter, 2" line size, 1.450" bore, 0.70 Beta, water capacity: 320" d.p. W/C, 147.74 GPM flow; air capacity: 200" d.p. W/C, 372.09 SCFM @ 14.7 psia, 639.87 SCFM @ 20 psig, 1227.63 SCFM @ 100 psig; 3 lb.