Shree Narayan Sales & Services is a reputed Supplier of Axial Flow Fans from Kolkata, West Bengal. These fans are used extensively for Industrial ventilation, Air Conditioning, Dust extraction and Fume extraction systems in Steel Plant, Fertilizer Plant, Tea Industry, Mining, Ship, Power Plants (Thermal and Nuclear) Chemical Plant etc. 

Features
Axial Flow Fans are available in wide range of combination from 12" to 75" diameter fitted with Motors from 0.37 kW to 110 kW in 2 Pole, 4 Pole, 6 versions. Motors are suitable for 415 volts ±10%, 50 Hz ±5%, 3 Phase Power Supply, as per IS:325/1996, which are in-house manufactured ensuring better fitment and proper matching. Fans are available in single phase version also. Axial Flow Fans are capable of handling upto 300000 m3/hr air delivery and static pressure upto 120 MM WG. Further pressure can be
developed with multiple staging of fans.
Construction
Fan Casing is made of heavy gauge MS Sheet (as per IS-1079/2062) having robust construction. It has flanges at both ends for easy fixing on ducts/walls.
Impeller is made of Die Cast aluminium (LM-6 of BS 1490/IS 617 Gr. 4600) having aerofoil design with adjustable pitch angles. The solidity (No. of wings) is varied in order to use the most efficient part of the fan characteristics.
Axial Flow Fans are tested in accordance with IS-3588-1991. Standard fans are finished with synthetic enamel paint.
Depending on application, fans can be supplied with casing made of stainless steel or zinc sprayed MS sheet. Epoxy / chlorinated rubber paint may also be provided.
Fans are available both in Wall Mounted and Duct Mounted configuration. Fan selection chart (full solidity in 12" to 60", Full/half solidity in 75") and general arrangement dimensions are given in Table -1 & 2 respectively. Following special application fans are also offered depending on application and end use.
Bifurcated Fans
MARATHON Electric Bifurcated Fans are available from sizes 19" to 75". These fans are used to handle hazardous air, where motors are kept outside the air stream.
Flame Proof Fans
MARATHON Electric Flame Proof Axial Fans are available from sizes 15" to 75" and are used extensively in Fire Hazard Areas.
Roof Extractor Unit
MARATHON Electric Roof Extractor Units are available from sizes 19" to 60", fitted with Hood and Bottom Plate. These units are used on the roof to extract and exhaust contaminated air.
Belt Driven Fan
MARATHON Electric Belt Driven Fans are available from sizes 19" to 75". Fans are driven by belt and pulley arrangement. The motor is located outside the air stream.
Accessories
Following (optional) accessories are also available.

• Louvre Shutter

• Wall Cowl and Bird Screen

• Filter / Filter Frame with adapter cone

• Dampers

Shree Narayan Sales & Services is a reputed Supplier of Axial Flow Fans from Kolkata, West Bengal. These fans are used extensively for Industrial ventilation, Air Conditioning, Dust extraction and Fume extraction systems in Steel Plant, Fertilizer Plant, Tea Industry, Mining, Ship, Power Plants (Thermal and Nuclear) Chemical Plant etc. 

Features
Axial Flow Fans are available in wide range of combination from 12" to 75" diameter fitted with Motors from 0.37 kW to 110 kW in 2 Pole, 4 Pole, 6 versions. Motors are suitable for 415 volts ±10%, 50 Hz ±5%, 3 Phase Power Supply, as per IS:325/1996, which are in-house manufactured ensuring better fitment and proper matching. Fans are available in single phase version also. Axial Flow Fans are capable of handling upto 300000 m3/hr air delivery and static pressure upto 120 MM WG. Further pressure can be
developed with multiple staging of fans.
Construction
Fan Casing is made of heavy gauge MS Sheet (as per IS-1079/2062) having robust construction. It has flanges at both ends for easy fixing on ducts/walls.
Impeller is made of Die Cast aluminium (LM-6 of BS 1490/IS 617 Gr. 4600) having aerofoil design with adjustable pitch angles. The solidity (No. of wings) is varied in order to use the most efficient part of the fan characteristics.
Axial Flow Fans are tested in accordance with IS-3588-1991. Standard fans are finished with synthetic enamel paint.
Depending on application, fans can be supplied with casing made of stainless steel or zinc sprayed MS sheet. Epoxy / chlorinated rubber paint may also be provided.
Fans are available both in Wall Mounted and Duct Mounted configuration. Fan selection chart (full solidity in 12" to 60", Full/half solidity in 75") and general arrangement dimensions are given in Table -1 & 2 respectively. Following special application fans are also offered depending on application and end use.
Bifurcated Fans
MARATHON Electric Bifurcated Fans are available from sizes 19" to 75". These fans are used to handle hazardous air, where motors are kept outside the air stream.
Flame Proof Fans
MARATHON Electric Flame Proof Axial Fans are available from sizes 15" to 75" and are used extensively in Fire Hazard Areas.
Roof Extractor Unit
MARATHON Electric Roof Extractor Units are available from sizes 19" to 60", fitted with Hood and Bottom Plate. These units are used on the roof to extract and exhaust contaminated air.
Belt Driven Fan
MARATHON Electric Belt Driven Fans are available from sizes 19" to 75". Fans are driven by belt and pulley arrangement. The motor is located outside the air stream.
Accessories
Following (optional) accessories are also available.

• Louvre Shutter

• Wall Cowl and Bird Screen

• Filter / Filter Frame with adapter cone

• Dampers