Air Filter System

Our offered range of Sigma Fire Retardant Filter or Dual Stage Fire Retardant Filter is exclusively designed for high degree temperature unit that is hot air units, hot zone and F.B.D. Units. These are widely used in pharmaceutical, research laboratories, atomic energy, ordinance and defense and chemical industries. The temperature range of Filter is 100 °c to 600 °c.

 

Specifications:

1. Construction:

 

• The Filter element is constructed from non woven fiber glass media. Supported and stitched both side by aluminum, SS, Wire-mesh, and pleated to form deep fold. This exclusive design ensures a large filtrating area in ratio to the face area

• This filters having high dust retention capacity and high flow rate

• The Filter units are made in standard size and are interchangeable

• The M.O.C. of casing is in Aluminium and SS; the bonding material is fire retardant type for bonding the folds are separated by Aluminium & SS Separators and also provides Aluminium & SS Protective guards

• Fire retardant type gasket is used for to avoid to leakages

2. Operating condition:

 

• This Filter can withstand very high degree operating temperature up to 600 °C

• This filter is washable and cleanable type

We are offering a wide range of Sigma Kitchens Grease Stop Filters for kitchen exhaust system. These are widely used for removing oil droplets, vaporous and hot air from kitchen via exhaust system. Our range of filters is available in various shapes such as 2 half 'C' type, complete 'C' type and 'V' shape type. These filters are manufactured with aluminum and stainless steel metal sheet and are installed in vertical inclined position in the exhaust system plenum. The collected oil drops gets drained through the drain holes of the filter to the drain line. These filters are washable and are available in standard sizes:

Sr. No.	Filter Size	Air Flow Rate(C F M)
1	610X610X50	1000
2	635X508X50	900
3	508X508X50	800
4	635X406X50	700
5	508X406X50	650

With rich expertise, we are offering a wide range of Sigma High Density Polyethylene Panel Type Air Filters that is designed for high efficiency filtration with corrosion resistance. These are widely used for corrosive atmosphere applications, chemical plants, naval frigates and ventilation plants operating under extensive humidity conditions. We offer these with the following specifications:

1. Construction:

 

• From several layers of high density polyethylene mesh stitched together and crimped to form deep folds

• This exclusive design ensures maximum filtration is in ratio to the face area

2. Result:

 

• Low differential pressure, high dust retention capacity and high flow rate

• The filter folds are separated by aluminum spacers to ensure uniform distribution of Air flow through the filter media-longer service life

• The filter element is sealed into a spray painted and stove enameled casing

• The filter casing is provided with a flanged section for easy fitment on to the filter frame

• A felt & neoprene sponge rubber sealing is fixed onto the filter flange

 

3. Operating Conditions:

 

• These can be used in conditions of humidity up to and including 100% RH

• It is recommended that the filter element is replaced every 12-18 months

4. Installation:

 

• Filter units may be mounted in multiple banks to cater to large volumes of air flow

• The units can be mounted on angle iron frames

• Specially designed outlet ducts can be supplied for attaching to the framework of the filter units for fitment with the existing duct

• The filter units are made in standard sizes and are interchangeable

We are one of the leading manufacturers and suppliers of Sigma Poly-fiber or Goase Air Filters that are designed for filtration and dust loading condition. These Filters are washable type and are light in weight. Our range is generally used for air conditioning and ventilation system. Apart from this, these are also used in industrial offices, factories, building and cinema theaters. The efficiency of these Filters ranges from 85% to 90% EU -3 type 20 micron filter.

 

Sr. No.	Size	Air Flow Rate(C F M)	Cmh.
1	24"X24"X2"	1700	2840
2	25"X20"X2"	1450	2420
3	24"X20"X2"	1400	2340
4	20"X20"X2"	1100	1840
5	20"X16"X2"	1100	1840
6	20"X16"X2"	1000	1670

 

We are engaged in offering a wide range of Sigma Bag Type Air Filters that is manufactured using quality raw material like metallic sheet and rods with powder coated. The bags media of Filter is manufactured utilizing imported glass fiber media and non woven synthetic fibers to ensure durability and longer service life of the filters. These are bonded and assembled in order to avoid leakages. Our offered filters are specifically designed for meeting the requirement in paint shop and automobile industry. Moreover, these are also used for pharmaceutical, Chemical Industry, synthetic rayon Industries.

Specifications:

Sr. No.	Filter Type	EU Class	Dust Collection	Filter Size	No. of Bags	Length of Bags	Air flow Cmh.
1	F7	EU-7	99%	610X610X25	6	750	3400
2	F7	EU-7	99%	592X592X25	6	750	3400
3	F7	EU-7	99%	592X300X25	4	750	1700
4	F5	EU-5	98%	610X610X25	6	600	3600
5	F5	EU-5	98%	592X592X25	6	600	3600
6	F7	EU-5	98%	592X300X25	4	600	1800
7	G3	EU-3	90%	592X592X25	6	360	3600
8	G3	EU-3	90%	610X610X25	6	360	3600
9	G3	EU-3	90%	610X300X25	4	360	1800

We are one of the leading manufacturers and suppliers of Sigma Viscous Panel Type Air Filters, which are designed specifically for comfort and industrial air conditioning in T. V. studios, office buildings, hostels, cinema houses and factories. We have developed an efficient, economical and durable design for metallic mesh air filters
ideal for comfort and industrial air conducting and ventilation applications. Following are the specifications of our range:

 

1. Constructions:

 

• The filter element is constructed from several layers of corrugated G. I. Alu, Ss., and sys. Wire mesh, inter spaced with a flat layer of G.I. SS. Alu-Wire mesh

• The pleated formation of the filter media ensures maximum filtration of the filter media ensures maximum filtration area in ratio to the face area, nominal differential pressure and high dust retention capacity

• The filter element is encased in an aluminum frame, fitted with aluminum expanded metal on each side

• The filter units are made in standard size and are interchangeable

2. Performance:

 

• This unit has an efficiency, dust collection rating of 70%- 80%.The filter unit is required to be impregnated with light mineral oil at regular service periods - depending upon actual working conditions

• The separating efficiency of the viscous filter unit depends upon entirely the regularity of this roiling process. This viscous crimped mesh impingement filter enjoys a major advantage over the packed ferrules type media which has a tendency to sink in the filter frame, thereby causing a gap for the passage of unfiltered air

• The Filter units are tested as per BSEN – 779

3. Operation Conditions:

 

• The filter unit can be used under conditions of humidity up to and including 100% R. H. Installation: Filter units may be mounted in multiple banks to cater to large volumes of airflow the units can be mounted on angle iron frames

• Specially designed outlet ducts can be supplied for attaching to the frame work of the filter units for fitment with the existing duct

• The filter units are made in standard sizes and are interchangeable

We are engaged in offering a quality range of Sigma Dry Fabric Panel Type Air Filters that is specifically designed for meeting the requirements of nuclear, pharmaceutical, biological, petrochemical, fertilizer and synthetic fiber industries along with computer installation and hospitals. These are available with following specifications:

1. Construction:

 

• The filter elements are constructed from special pressed non woven synthetic filter fabric stitched on a G. I wire neon support & rods and crimped to form deep folds

• This exclusive design ensures a large filtration area in ratio to the face area of the filter unit. Result-low differential pressure, high dust retention capacity and high flow rate

• The filter units are made in standard sizes and are interchangeable. The filter casing is provided with a flanged section for easy fitment on to the filter frame

• A felt & neoprene sponge rubber sealing is fixed on to the filter flange. The filter folds are separated by aluminum spacers to ensure uniform distribution of air flow through the filter media - longer service life

• The filter element is sealed in to a mild steel casing duly spray painted and stove enameled to counter rust formation. Aluminum filter casings are also available

2. Operating Conditions:

 

• The Filter unit can be used under conditions of humidity up to and including 100% RH. Exclusive design ensures large filtration area, maximum filtration efficiency and nominal pressure drop vis-à-vis airflow rate

• It is recommended that the filter element is replaced every 12-18 months

• Dry Fabric Panel Filters are essential in all industrial installations where a high degree of filtration efficiency and nominal pressure drop commensurate with rated flow is required

3. Installation:

 

• Filter units may be mounted in multiple banks to cater to large volumes of air flow

• The units can be mounted on angle iron frames. Specially designed outlet ducts can be supplied for attaching to the frame work of the filter units for fitment with the existing duct

• The filter units are made in standard sizes and are interchangeable

We are offering a wide range of Sigma Absolute Filters that is available in varied series to meet specific temperature and humidity requirements. Our range of Sigma HEPA filter is available with stand and its temperature ranges up to 600 °C. These are designed to meet various filtration requirements, with an efficiency rating of 99.97% down to particle size of 0.3 microns and are widely used in nuclear, chemical, bacteriological research units, pharmaceutical industry, industrial clean Air Rooms, photographic processing laboratories, space research units and laminar flow cabinets. Following are the specifications:

1. Construction:

 

• The filter medium is constructed from water repellent, fire retardant all glass - micro fiber paper, pleated over corrugated board, plastic & aluminum separators

• The filter I element is bonded to a filter frame of aluminum, cadmium plated mild steel, fire retardant plywood with special plastic based adhesive

• A neoprene sponge rubber seal is fitted on either an I each face of the filter frame of aluminum, cadmium plated mild steel, fire retardant plywood with special plastic based adhesive

2. Operating Conditions:

 

• The filter unit is suitable for maximum operating temperatures of 120 °C – 600 °C and conditions of humidity upon and including 100" RH

• The life of the filter can vary from six months to two years

• Usage of Sigma pre-filters enhances the service life of absolute filter

3. Installation:

 

• Sigma Absolute Filter units can be mounted in multiple bank to cater to large volumes of air flow

• The unit can be mounted on angle iron frames. Specially designed ducts can be supplied for attaching of the frame work of the filter units for figment with existing duct work

• The filter units are made in standard sizes and are interchangeable

4. Performance:

 

• The Sigma Absolute Filter unit is suitable for an operating efficiency of 99.97% down to particle size of 0.3 microns, with 0.3% penetration - on Sodium Flame Test procedure & D.O.P. test method - the most accurate and demanding of any filter test used today

• It incorporates a Diocty Philalte Thermal Smoke generator and a forward light scatter penetrometer. The test determines the filter efficiency by measuring the percent penetration of 0.3 micron smoke particles