Multistage centrifugal blower model 251
Material of construction
- Bearing housings : Cast iron FGL 250
- Head, Sections : Cast iron FGL 250
- Tie rods : 13/16” (20 mm) diameter cold drawn steel A60
- Joint sealing compound : RTV IS502 Silicone
- Seals (air) : Graphit rings each end
- Seals (gas) : Four carbon rings each end with inert gas injection
- Bearings : Ball bearings 6316 C3 per AFBMA B10 STANDARD
- Shaft : Carbon steel C35 (stainless steel available)
- Impellers : Fabricated aluminium 5754/6082T6
- Baffle rings : Stainless steel
- Motor pedestal : UPN roll carbon steel.
- Base frame installation : Anchor bolts or antivibrations pads
- Noise level : In compliance with OSHA standards when machine is fully, piped (certified tests available).
Technical data
- Number of stage :1 thru 8 (cast)
- Inlet connection : 14" (355 mm) flange, PN 10 DN 350
- Outlet connection : 14” (355 mm) flange, PN 10 DN 350
- Operating speed : 3550 rpm in direct drive (60 Hz)
- Lubrication : Oil type with constant level
- Impeller diameter : 26" (662 mm)
- Impeller tip speed : 400 f/s (122 m/s)
- First critical speed: 4601 rpm (7-stages)
- 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
- Shaft end : 2" 9/16 (65 mm), inlet end drive standard
Blower size
- Blower 251.01 : 559 x 2591 x 3048 (mm) / 1650 Kg
- Blower 251.02 : 759 x 2591 x 3048 (mm) / 1950 Kg
- Blower 251.03 : 959 x 2896 x 3353 (mm) / 2300 Kg
- Blower 251.04 : 1159 x 3200 x 3658 (mm) / 2650 Kg
- Blower 251.05 : 1359 x 3658 x 4115 (mm) / 3050 Kg
- Blower 251.06 : 1559 x 3658 x 4115 (mm) / 3350 Kg
- Blower 251.07 : 1759 x 3912 x 4369 (mm) / 3750 Kg
- Blower 251.08 : 1959 x 3912 x 4369 (mm) / 4050 Kg
