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~STERN PNEUMATICS, INC. <br /> P..O. Box 21340 · Eugene, Oregon 97402-0406 <br /> 503/461-2600 FAX503/461-2606 <br /> <br /> LOU-MAC'S <br /> <br /> AVMSVILL OREGON <br /> 9493 PORTER ROAD S.E. <br /> <br /> PIPE GAUGES - CLASS II DUCTING ROUND <br /> MAXIMUM NEGATIVE PRESSURE IS 16" <br /> <br /> UP TO 7" IS 22 GAUGE <br /> UP TO 10" IS 20 GAUGE <br /> UP TO 32" IS 18 GAUGE <br /> <br />NOOD VELOCITIES 5,500 FPM 1.89" PRESSURE LOSS MAXIMUM <br />TRUNK LINE VELOCITIES 4,500 FPM 8" PRESSURE LOSS MAXIMUM <br />DISCHARGE TRUNK 5,000 FPM 3" PRESSURE LOSS MAXIMUM <br /> <br /> MAXIMUM DEFLECTION .25" <br /> <br /> TURNS AND FI~INGS ARE ALL 16 GAUGE <br /> <br /> <br />