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f <br /> HOFFMAN <br /> AIR & FILTRATION SYSTEMS <br /> ISO 4441 SKOISTFAW <br /> c <br /> l <br /> III <br /> A <br /> 1� <br /> Number of stages: 1 through 8(10 for 50 Hz). <br /> Inlet connection:8"(203mm)flange, <br /> ANSI 126#drilling. <br /> 1 Outlet connection:8"(203mm)flange, <br /> ANSI 125#drilling. <br /> Operating speed:3550 RPM. <br /> Seals(air):Two carbon rings each end. - ® • • <br /> I Seals(gas): Four carbon rings each end wi <br /> ' <br /> 906-iFgQGVGA4aps, Casing:Heads,Sections and Bearing Housing, <br /> Bearings:Ball, 10 year minimum life per AFBMA Cast Iron ASTM A48,Glass 30. i <br /> L14 standards. Tie rods: 3/4"09mm)diameter cold drawn steel, <br /> Lubrication:Grease standard(oil system available). Joint sealing compound:RTV silicone. <br /> Impeller diameter:24"(610mm). Shaft:Carbon steel,A)SI 1045(stawass steel available). <br /> Impeller tip speed:372 FPS(118m/sec). lmpellet5:'Cast or fabricated aluminum(cast hub). <br /> First critical speed: 432$RPM(9 stag4)' Fabricated stainless steel or other alloy <br /> Direct drive,Yes,also available for gear or belt drive. construCtlon and special coatings available. <br /> Vibratlon tolerance; 0.287sec(7.1mm/sec). safe:Fabricated steel. <br /> Shaft and: 1.7/8"(48mm)diameter,inlet and 'Motor pedestal:Welded steel plate. �. <br /> drive standard. Finish: Blue enamel over rust inhibitive primer. <br /> Rotor balance:Impellers are statically balanced Base pads: Cork strips. <br /> individually.Complete rotating assemblles are tnterstage baffles;AISI 300 Series Stainless Steel. <br /> dynamically balanced." <br /> Maximum casing pressurs:"25"PSIG. f <br /> eight Rotor. <br /> Model A F WK• <br /> Inches (mm) Inches (mm) L13S KG (iia.fLq <br /> 74101A 00" (1524) 11" (298) 1300 590 11 <br /> 74109A 72" (1829) 18' (408) 1800 818 21 IWtEi <br /> 74103A 72" {182$) 20-3/8" (518) 2300 1043 31 <br /> 74104K. 72' (1829). 24-11/18' (627). 2957. 1298, 42IN <br /> , <br /> 74105A 84" (2134) 29" (737) 3339 1515 52 (t11.1plrxrd <br /> z4108A ..84- (2134) .33-5116' .(8.46). 4.0.11. 1619 63 1 <br /> 74107A 84" (2134) 37-518" (856) 4568 2086 73 -----» ---- <br /> 74106C 96 (2439) 41-15/16"(1665)1.5255 2384 38 <br /> 74109C 105' (2744) 461/2" (1175) 5987 2710i 43 1l3Q71 S � } <br /> i <br /> Information Is approximate,subject to change,and <br /> not to be used for construction purposes. <br /> "Based on cast impellers through seven stages. <br /> Fabricated impeller data on 74108 and 74109. <br />