Filter Media

A filter medium is any material that, under the operating conditions of the filter , is permeable to one or more components of a mixture, solution or suspension, and is impermeable to the remaining components.

The retained components, the ones to which the medium is impermeable, may be particles of solid, droplets of liquid, colloidal material, or molecular or ionic species in solution. While the permeate will normally be the suspending fluid or solvent, possibly together with some of the other components. 

It is true to say that any material that is porous or made into a porous structure, whether the pores are the size smaller than a micrometre, can serve as a filter medium. However, as far as is reasonable, a filter medium should be strong, flexible, resistant to corrosion and abrasion, easily manipulated into the required shapes and capable of being made with a range of porosities. 




Absorbent media : An absorbent material is akin to a sponge in that it can draw fluid into itself and retain this fluid within its structure, and the fluid can only then desorb by a change in phase. In this sense, it can act as a filter by removing liquid droplets, for example, provided that they wet the absorbent. Thus, an untreated paper, being an absorbent material, could filter out water droplets from an air stream. Natural fibres, such as wool and cotton, and the felts made from them, are also absorbent materials, but the use of such absorbent media purely as absorbent filters is very limited.


Adsorbent media : Adsorbent media are widely used for the removal of odours, smoke, fumes etc., in a wide range of applications from domestic through to air-conditioning plants and to industrial fume removal. Industrially, adsorbent filters are used for the removal of odours from oils, and of odours and tastes from foodstuffs and beverages. The adsorbent properties of the medium means that it removes dissolved as well as undissolved contaminants, the medium being chosen accordingly.

Biological filters:  There is another group of equipment to which the word  ‘filter’ is attached in their name that have a prime function that is not the act of fi ltration, but in which fi ltration does play a part. These are the biological or trickle fi lters much used in the processing of water and wastewater.



  • Paper media:
  • Filter sheets
  • Woven fabrics: 
  • Woven yarn fabrics
  • Synthetic monofilament fabrics
  • Nonwoven materials:
  • Wool resin media
  • Needle felts
  • Melt spun materials
  • Bonded porous media:
  • Inorganic materials

Basic Principle of Diesel Fuel Filter

The Purpose of any Diesel Fuel Filter is to remove particles as well as water. On diesel engine mainly two filters are used (1) Primary Filters (2) Secondary Filters. The primary filter is capable of removing dust particles down to 30 microns. Secondary filter between 10 to 12 microns. Secondary filter are available between 3 and 5 microns. 


The Primary filter location between the tank & the supply pump. The Secondary filter between the supply pump & the injection pump.


The fuel filter of diesel engine is mainly composed of the three parts: (1) Filter Element, (2) the Shell, (3) Filter base. Other components are used for the fuel diesel engine filter (1) Gasket, (2) Base of Filter,(3) Pull rod, (4) Bleed Screw, (5) Over Flow valve, (6) Oil pipe connection, (7) Seal ring, (8) Shell (9) Spring.

The fuel is sent to the fuel filter mainly by the fuel pump. The impurities in the fuel will be cleared through the paper filter element. And then fuel enters the inner cavity of the filter cylinder. Through the chamber of Filter Sea, it leads to the injection pump. The filter holder is equipped with fuel return fitting & the over flow valve is also installed inside. When the fuel pressure in the fuel filter is more than 78kPa, the excess fuel return back to the fuel tank from the fuel return fitting. When connecting the low pressure fuel line, should connect it according to the arrow pointing direction on the socket to avoid connection error. The filter seat & the shell are connected by pull rod, and it is sealed by rubber O- ring. Due to there is a bleeder plug on the top of filter seat, can release the screw to clear the air of the fuel filter in use. The fuel filter of the diesel engine is fixed on the engine body & two screws. If the fuel supply is not smooth, it is possible that the filter element is plugged. The pull of rod nut of diesel generator, remove the shell & the take out of the filter cartridge. If the filter cartridge is broken or hard to clean, it must be renewed.           

Industrial Filter Manufacturer in India

We are one of the leading Filtration Solutions Provider in India. Special competence in creating tailormade filtration systems. Spend considerable quality time in understanding the needs of our clients. Further help client modify process to suit better filtration in turn increasing productivity. All our products, services and actions lead to increased productivity, waste minimization, pollution control, natural resource conservation and equitable sustainable utilization. We are one of the renowned manufacturers and suppliers of filtration systems. These are known for their durability and high efficiency in the industrial, domestic and commercial applications.

Our interaction with customers, has developed a good reputation for our products,and with the market better feedback, in the continuous interaction with customers, we have formed our own development system.

We design high efficiency filtration equipment for a number of applications. Our affordable products are designed for unprecedented performance. We offer Filter Systems, Filter Consumables and Filter Housings for different industries. We create customized designs that meet each customer’s unique needs.

Find out how we can help you on our website today or contact us

Filter Candles – Manufacturer, Exporter & Supplier in India | Ahmedabad

Filtcare is dedicated to offering Filter Candles of the highest value to our customers. We control both the manufacture of the filter Cartridges into the finished products to ensure the dependability and quality of every product that we sell.

Filtcare implement the highest quality practices in all manufacturing phases. We are committed to customer satisfaction and on-going improvement.

Our Range Of Filter Cartridges


Spun Bonded Filter Candles: Filtcare Spun Bonded Candle filters are manufactured through a process that thermally bonds pure Polypropylene microfibers with lower density at the outside surface and progressively higher density toward the center.  Our Spun bonded Filter Candles are useful for application such as Drinking Water Treatment, Industrial Water Treatment…etc

Wound Filter Candles : Filtcare Wound Filter Candles (Wound Candles)are made up of polypropylene fibers and are designed to meet the most demanding filtration duties. Our Wound candle Filters are useful for Pre filter for ultra pure water Applications, Filtration for Acids and more

PP Pleated Filter Candles : Are you looking for PP Pleated Filter Candle Manufacturer in India. Filtcare Offer PP Pleated Filter Candles, They are used in a variety of applications like food, pharmaceuticals, Air, Gas and other demanding process industries.

PTFE Filter Candles

Polytetrafluoroethylene Filter Candle / PTFE Filter Candle is a versatile polymer used in a broad range of medical, industrial, and high technology applications. Filtcare Offer PTFE Filter Candles with Sizes : 10″,20″,30″40″ Long

Carbon Filter Candles : Looking for Carbon Filter Candles for Water Treatment, Membrane Pre filter , Edible Oil or Mineral Oil Filtration Application? Filtcare Offers Carbon Cartridges with High dirt holding capacity & Filtration Rating of 5, 10 Micron

Oil Adsorbing Filter Candles: Filtcare Oil Absorbing Filter Cartridge is made from modified cellulose-based Filtration media to chemically bond with hydrocarbons and other pollutants. These Filter Candles are useful for applications like Water Treatment, Ballage and bilge water clean up, Surge clean up…etc

Resin Bonded Filter Candles: Resin Bonded Filter candles are also known as RBCM Filter Candles useful for applications like Fuel Oil Filtration, Paints, Grease, Inks Filtration….etc

Stainless Steel Filter Candles: Stainless steel cartridges (Environment Friendly – Reusable Filter Candles)are used in applications of high temperature and where there is lack of compatibility of synthetic Fiber media. Stainless steel cartridges are offered in Stainess Steel 304, Stainess Steel 316, Stainess Steel 316L,materials .

We also offer custom filtration solutions as per clients requirement

Our experienced team who will work with your team to determine the best solution for your filtration needs.


Filter Housing Manufacturer in India

Filtcare carry a variety of products to meet your Filtration Needs, Including Cartridge Filter Housing, Bag Filter Housing and other Filter Systes. We supply state of the art high quality filter housings for hundreds of companies and entities.

Cartridge Filter Housing

Cartridge Filter Housing

Basket Strainers

Basket Strainers

Bag Filter Housing

Bag Filter Housing

PVC Filter Housing

PVC Filter Housing

PVC Bag Filter Housing

PVC Bag Filter Housing

Y & T Strainer

Y & T Strainer

PolyPropylene Filter Housing

PolyPropylene Filter Housing

Filter Housing

Tailor-Made Solutions

Filtcare offer a complete line of filtration products to meet your specific needs. We pride ourselves in doing everything possible to meet special requirements.

Effect of Contaminants/Dust Particles on Machines

Machines take in air at a very considerable rate. The average machine/engine inducts something like 9 or 10 m3 of air/litre the fuel burnt; hence the annual intake is in between 30,000 – 60,000 m3 of air per year. The content of contaminants in this air is likely to be 0.3 kg to o.6 kg, which in absence of filtration equipment/machine would all deposit in the engine where its abrasive nature would soon do serious damage. This corresponds to a dust concentration of 10 mg/m3 in air.

The inducted solids will accumulate as deposits on pistons, cylinder heads, valves and other components with a possibility of their being bonded in place by the oil film normally on these surfaces. The dust particle in the air will be washed out by the oil mist, to collect in the lubricant and then can be circulated through the machine. In Gas turbines too, the suspended solids will quickly wear away the turbine blades.

So the dust intake is very substantial, cannot be tolerated and filtration system must be installed to remove the dust. The sizing of the filter is selected based upon the amount of dust and size of dust particles. Since the filter will clog faster it will need cleaning or changing more quickly. Particles of sizes down to about 10 micron can do damage.

Filtration must also be provided to protect the machinery from such materials and the type will depend much on the nature of the machine being protected.

Top Filter Housing Manufacturer in India

Filtcare Technology India is one of the world-class manufacturer and exporter of Filter Housings such as Cartridge Filter Housing, Bag, Basket Strainer, PVC Cartridge & Bag Filter Housing for Industrial Applications. One of the most important benefits of our filter housing is Easy to operate and low maintenance. Our Filter Housings are available in MOCs like a Various type of Stainless Steel as Stainless Steel 304, SS 304 L, Stainless Steel 316, SS 316 L, Duplex SS 2205, etc. We also offer custom solutions as per your requirement. Filtcare is faithful towards delivering the best customer satisfaction by providing the most valuable solutions in meeting filtration needs through the innovational products and services.

Cartridge Filter Housings
Our Cartridge Filter Housings are used for a wide variety of fluids handling various flow capacities. Our Cartridge Filter Housing Can handle flow rate up to 2000 M3/Hr. Cartridge Housing is available in MOCs (Material of Construction) like Stainless Steel 304, SS 304 L, SS 316, SS 316 L, Duplex SS 2205, etc. Also, our Cartridge Filter Housings are suitable for Double Open End type (DOE) and Single Open End type (SOE) filter cartridges.

Cartridge Filter Housing India

Basket Strainer
Basket Strainers are used for a variety of fluids or applications where the suspended particles are to be retained of any size and offer Flow rate Up to 2000 M3/Hr. Our basket strainers are used for various applications like Process Industries, Textiles…etc. Also, our basket Strainer is connecting with end connections like Flanged, BSP, NPT, DIN standard.

Basket Strainer Manufacturer India

PVC Cartridge Filter Housing
Polyvinyl chloride or PVC Cartridge Filter Housings have a simple design with high filtration quality. In our PVC Cartridge Filter housing, you can accommodate 5 to 9 Cartridges.

PVC Cartridge Filter Housing Manufacturer India
PVC Bag Filter Housing
PVC Bag Filter Housing are not Environmentally friendly but PVC Bag Filter Housings are the best option and an alternative for Stainless steel (SS) housings.

PVC Bag Filter Housing Manufacturer India
Y & T Strainer
Y-Strainer is used in applications where the number of suspended solids to be removed are less and where frequent cleaning is not required. Y Strainer is also available in different Material of Constructions like Stainless Steel – SS 304, SS 304 L, SS 316, SS 316 L, Carbon Steel

Y-and-T-Strainer in India

Polypropylene Filter Housings
Polypropylene filter Housings are generally used in corrosive/saline liquid processing.

Polypropylene Filter Housing Manufacturer India

Top Filter Cartridge Manufacturer & Supplier in Ahmedabad

Filtcare Technology is one of the leading Filter Cartridge Supplier in Ahmedabad. Filtcare Technology offers various type of Filter consumables for Industrial filtration requirements. Some of the advantages of our Filter Cartridges are High flow rate with low-pressure drop, High Dirt holding capacity, Long Service Life. We also offer Environment-Friendly Filter Cartridges (Stainless Steel Filter Cartridges)that is Reusable as it can be backwashed. Stainless Steel Filter Cartridges are available in various sizes as 10″,20″,30″ & 40″ Long and micron rating from 0.5 to 100. Our Filter Cartridges are widely used for R.O Prefiltration Application, Hot-Gas Filtration, and many other Industrial applications.Filtcare    Filter Cartridges can be used either as a pre-filter or final filter for various industrial applications like the chemical process, pharmaceutical, and many other. See our range of Filter consumables below.


Spun Cartridge Supplier Ahmedabad  

PP Pleated Filter Cartridges  PTFE Filter Cartridges

Carbon Filter Cartridges   Oil Adsorbing Filter Cartridges

Resin Bonded Filter Cartridges  Stainless Steel Filter Cartridges

About Ahmedabad
Ahmedabad is the cultural and commercial heart of Indian state Gujarat. Ahmedabad is well known for the Textile Industry. Ahmedabad also known as Amdavad, is the largest city and former capital of the Indian state of Gujarat.

To know more about our filtration products please visit our website.


Surface vs Depth Filtration

It has been stated that a filter medium is a porous (or at the very least semipermeable) barrier placed across the flow of a suspension to hold back some or all of the suspended material. If this barrier were to be very thin compared with the diameter of the smallest particle to be filtered (and perforated with even sized holes), then all the filtration would take place on the upstream surface of the medium. Any particle smaller than the pore diameter would be swept through the pores, and any particle larger than that (assuming the particles to be rigid) would remain on the upstream surface. Some of the larger particles, however, would be of a size to settle into the individual pores and block them. The medium surface would gradually fill with pores blocked in this way, until the fluid flow reduced to below an acceptable level. At this point filtration would be stopped and the medium surface would be brushed or scraped clean (although many automatic filters have their surface continuously brushed or scraped).

Surface vs Depth Filtration | Filtcare

This filtration mechanism is termed surface straining, because it works entirely on the relation between the particle size and the pore size in the screen. Unless the particles are easily deformable, then surface straining will separate solids in the feed suspension absolutely on the size of the pores in the filter medium. This mechanism is that working in screening through a perforated plate or single layer of woven wire or plastic mesh of precise weave. It also applies in the range of metal edge and similar cartridges where the ‘ pores ’ are actually precisely formed slots between adjacent discs or turns of a helical ribbon.

Most real media are, of course, not infinitely thin, but have a finite thickness in the direction of fluid flow, while most pores through such material vary in diameter along the fluid path. A second mechanism, termed depth straining, then applies when a particle moves through a pore until it meets a point where the pore is too small, and the particle is held entirely because of its size. The pore then is blocked, and remains so until the filter medium becomes too clogged in this way for it to have any further use. At this point it must be discarded, or, preferably, blown free of the trapped solids, by a reverse flow of fluid.

In the same way that particles can be trapped in a bed of fibres by the adsorption processes described earlier, so can fi ne particles moving through a tortuous path imposed by an irregular pore be trapped on the pore surface by the mechanisms of direct or inertial interception or diffusion. This process is known as depth filtration, and is shown in below figure. Pore blockage also occurs with this mechanism, as particles become trapped to one another, although no pores become absolutely blocked, because the fluid can still flow through the spaces between the particles. As before,

a completely clogged medium would need to be discarded or cleaned by reverse flow (or perhaps chemically).

Depth Filtration

In practice, the effects of depth straining and depth filtration are effectively the same the medium clogs because of particles trapped in the pores – and difficult to tell apart, so both mechanisms are usually grouped together under the title of depth filtration.

Where solid concentrations are higher, as is the case with a large number of process separations, a different mechanism is called into play, which is the development of surface straining. Now, because of the high concentration of solids in the suspension, the particles jostle with one another at the entrance to each pore and, after a very short period when some small particles escape through the pore, the particles bridge together across the opening to the pore. These particle bridges then act as the filter medium to allow layers of particles to form upstream of them and the fluid to flow through these layers to be filtered. The build-up of particles on the filter medium produces a cake of separated solids, and the mechanism is termed cake filtration ,with actual separation by depth filtration within the thickness of the cake, and surface straining on its upstream face. This mechanism is illustrated in below Figure

Cake Filtration

Cake filtration presents complicated problems because the cake can be more or less compressible under the force of the pressure differential across the cake. Some clarification processes do employ cake filtration – such as exhaust gas cleaning in bag houses or the treatment of some dilute liquid slurries in bag filters – where the accumulated cake is usually blown free from the surface of the bag by means of a reverse flow of fluid.

Filtration – An Introduction

Filtration is an operation that separate solids from fluids (liquids or gases) by adding a medium through which only the fluid can pass. The fluid that passes through is called the filtrate. A filter is basically a device for separating one substance from another, and to do that it requires the placing of a filter medium in the way of the fluid flow, so as to trap the solids in some way. The filter then becomes any contrivance that is able to hold the filter medium in the best way to achieve the purpose of the filter process. Filtration is also important and widely used as one of the unit operations of chemical engineering. It may be simultaneously combined with other unit operations to process the feed stream, as in the biofilter, which is a combined filter and biological digestion device.

There is hardly a human activity, industrial, commercial or domestic, that is not affected by filtration. It is a very widely used process, from the kitchen counter top water filter to the enormous wastewater treatment plants, or from the delicate membrane ultrafilter to the rugged tipping pan filter of a mineral processing works. It has a major processing role in many industries, and all service applications, such as hydraulic control systems, would literally come to a halt without it.

The reason behind filtration is removal of fluid contaminants and collection of suspended solids. The major filtration variables are Flow Rate, filtration rating, amount of suspended solids, differential pressure, Area, Fluid compatibility.

Two main types of filter media are employed in laboratories: a surface filter, a solid sieve which traps the solid particles, with or without the aid of filter paper (e.g. Büchner funnel, Belt filter, Rotary vacuum-drum filter, Cross-flow filters, Screen filter); and a depth filter, a bed of granular material which retains the solid particles as it passes (e.g. sand filter). The first type allows the solid particles, i.e. the residue, to be collected intact; the second type does not permit this. However, the second type is less prone to clogging due to the greater surface area where the particles can be trapped. Also, when the solid particles are very fine, it is often cheaper and easier to discard the contaminated granules than to clean the solid sieve.