Continental - Model 251 Series -Multistage Centrifugal Blowers

Number Of Stages: 1 thru 7 (8 for 50Hz). Inlet Connection: 14" (356 mm) flange, ANSI 125# drilling. Outlet Connection: 14" (356 mm) flange, ANSI 125# drilling. Operating Speed: 3550 rpm in direct dive (60Hz). Lubrication: Oil type with constant level. Impeller Diameter: 26" (662 mm). Impeller Tip Speed: 400 fps (122 m / sec). Drive: Direct drive or gear box or V-belts. Vibration Tolerance: 1.25 mils peak-to-peak (4.5 mm /s). Balance Piston: From 5 to 8 stages with pipe connection. Shaft End: 2" 9/16 (65mm) diameter, inlet end drive standard.