1. Fan Type Impeller Type Fan Series Drive Options Sizes # Max Flow (cmh) * Max Press (mmwc) * Maxm Temp (oC) $ Suitable for applications Remarks Cent type Roof Ventilator Backward Curved TFR- N Arr 5-Direct 28 to 71 19,080 106 80 Economical solution for ventilation of large premises, factory sheds at high efficiency 4,6 & 8 pole motor speed DIDW Centrifugal Backward Curved DFM- N Arr 17-Direct & 6,18,19-Belt 56 to 125 198,000 867 60 Compact design.Handles large air volumes of clean air at medium to high pressure requirements at reasonably high efficiency for supply air in Textile & ventilation application DIDW Centrifugal Backward Curved DFR- N Arr 17-Direct & 6,18,19-Belt 40 to 200 648,000 400 60
3 classes of speeds Plug Type Backward Curved PFB- N Arr 4A,4B,4BC,5A- Direct & 13B,13BC- Belt 35 to 125 144,000 300 300 Suitable for ovens, furnaces. Compact design with high performance, available in various arrangements 3 classes of speeds Plug Type Backward Curved PFM- N Arr 4A,4B,4BC,5A- Direct & 13B,13BC- Belt 35 to 125 115,200 580 300
SISW Centrifugal Radial Shrouded FA- R Arr 4,5,8-Direct & 1,9,12-Belt 31 to 90 1,400 2,000 300 Economical & Suitable for dust laden air even at higher temperatures Low Volume High Pressure SISW Centrifugal Forward Curved FC- P Arr 4,5,8-Direct & 1,9,12-Belt 50 to 100 7,200 1,850 300
SISW Centrifugal Forward Curved FE- P Arr 4,5,8-Direct & 1,9,12-Belt 40 to 90 10,800 2,000 300
SISW Centrifugal Forward Curved FG- P Arr 4,5,8-Direct & 1,9,12-Belt 35 to 90 28,800 2,150 300
SISW Centrifugal Forward Curved FS- P Arr 4,5,8-Direct & 1,9,12-Belt 18 to 100 131,400 300 300
Economical & Suitable for dust laden air High Volume Low Pressure SISW Centrifugal Backward Curved FC- N Arr 4,5,8-Direct & 1,9,12-Belt 50 to 112 9,360 2,200 300 Lower energy consumption., suitable for clean or lightly dust laden air. Low Volume High Pressure SISW Centrifugal Backward Curved FE- N Arr 4,5,8-Direct & 1,9,12-Belt 50 to 112 15,660 2,275 300
SISW Centrifugal Backward Curved FG- N Arr 4,5,8-Direct & 1,9,12-Belt 45 to 200 162,000 2,244 300
High Volume High Pressure SISW Centrifugal Backward Curved FI- N Arr 4,5,8-Direct & 1,9,12-Belt 40 to 200 208,800 2,350 300

3. Fan Type Impeller Type Fan Series Drive Options Sizes # Max Flow (cmh) * Max Press (mmwc) * Maxm Temp (oC) $ Suitable for applications Remarks SISW Centrifugal Backward Curved FP- N Arr 4,5,8-Direct & 1,9,12-Belt 35 to 90 63,000 950 300
Medium Volume Medium Pressure SISW Centrifugal Backward Curved FQ- N Arr 4,5,8-Direct & 1,9,12-Belt 25 to 200 270,000 775 300 Suitable for forced draughts pneumatic conveyance of dust laden air, high efficiency up to 90%) SISW Centrifugal Backward Curved FQP- N Arr 1-Belt 56 to 160 252,000 612 300 SISW Centrifugal Backward Curved FQL- N Arr 1-Belt 56 to 160 205,200 673 300 SISW Centrifugal Backward Curved FR- N Arr 4,5,8-Direct & 1,9,12-Belt 25 to 200 396,000 388 300 Suitable for handling large volumes at low pressure, of clean air 3 class of speeds SISW Centrifugal Backward Curved VCM- N Arr 4,5,8-Direct & 1,9,12-Belt 35 to 200 144,000 1,835 300 High efficiency fans (upto 90%), handling larger volume at medium to high pressure SISW Centrifugal Backward Curved ART- N Arr 4,5,8-Direct & 1,9,12-Belt 40 to 200 226,800 1,100 300 SISW Centrifugal Backward Curved MEC- N Arr 4,5,8-Direct & 1,9,12-Belt 25 to 200 234,000 560 300 Suitable for larger volume at low to medium pressure requirements SISW Centrifugal Backward Curved CFR- N Arr 17-Direct & 6,18,19-Belt 40 to 112 216,000 200 300 Suitable for exhaust / supply ventilation application at low pressure with high efficiency 3 class of speeds SISW Centrifugal Radial Open K- R Arr 4,5,8-Direct & 1,9,12-Belt 31 to 90 1,980 1,900 200 Suitable for induced draught pneumatic conveying of dust ladden air and filamentous fibres, offers a very wide range of volume & pressure combinations at higher temperatures SISW Centrifugal Forward Curved Open KA- P Arr 4,5,8-Direct & 1,9,12-Belt 40 to 100 6,300 1,070 200 SISW Centrifugal Forward Curved Open KB- P Arr 4,5,8-Direct & 1,9,12-Belt 40 to 100 19,800 1,200 200 SISW Centrifugal Radial Open KC- R Arr 4,5,8-Direct & 1,9,12-Belt 40 to 100 55,000 650 200 SISW Centrifugal Radial Open KM- R Arr 4,5,8-Direct & 1,9,12-Belt 22 to 100 50,000 300 200

4. Accessories Offered with centrifugal fans: Transmission drives, motor, in/outlet counter flange, in/outlet flexible conn. made suitable for various temp range, inlet guard, inlet filter, silencers, in/ outlet dampers, inlet guide vane, electric/pneumatic actuators with controls, temp/vibration/speed control, anti runback device, insulation & more Direct Drive Arrangements Belt Driven Arrangements Arr 4 Impeller mounted on foot motor (B3), with motor support Arr 1 With shaft & 2 bearings but without transmission & base frame Arr 5 Impeller mounted on flanged motor (B5), no motor support Arr 9 With transmission, belt guard. Motor supported on angular bearing pedestal Arr 8 Through coupling with shaft & 2 bearings Arr 12 With transmission, belt guard. Motor supported on common base frame Arr 17 For DIDW Fans, coupled, both bearings on fan casing Arr 6 For DIDW Fans, both bearings on fan casing Arr 4A For Plug Fans, impeller mounted on foot motor & assly on common base Arr 18 For DIDW Fans, both bearings on fan casing, motor on common base frame Arr 4B For Plug Fans, impeller mounted on foot motor & assly on front flange Arr 19 For DIDW Fans, both bearings on fan casing, motor on top of fan casing base Arr 4BC For Plug Fans, same as Arr 4B but with insulation Arr 13B For Plug Fans, with foot motor supported on box frame Arr 5A For Plug Fans, impeller mounted on flanged motor, no motor support Arr 13BC For Plug Fans, same as Arr 13B but with insulation.