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Liquid Filters Manufacturers and Suppliers

IQS Directory provides a comprehensive list of liquid filter manufacturers and suppliers. Use our website to review and source top liquid filter manufacturers with roll over ads and detailed product descriptions. Find liquid filter companies that can design, engineer, and manufacture liquid filters to your companies specifications. Then contact the liquid filter companies through our quick and easy request for quote form. Website links, company profile, locations, phone, product videos and product information is provided for each company. Access customer reviews and keep up to date with product new articles. Whether you are looking for manufacturers of liquid template filters, liquid filtration, industrial liquid filters, or customized liquid filter of every type, this is the resource for you.

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Precision is a distributor and manufacturer of high-quality liquied filters and systems and provides filtering carts, custom, OEM, rental equipment, coalescer separators, elements, vessels and other related products for numerous satisfied customers including the pipeline, automotive, oil, aviation, plastics, printing, food & beverage industries. Call today!
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We manufacture liquid filters for customers of all sizes! There is no job too small or too large for us to handle when it comes to liquid filters and we love a challenge! Since our inception, we have been dedicated to providing our customers with excellent quality customer service and high quality products sure to keep you coming back to us for all of your needs. For more information on what we are able to do for you visit our website today!
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ALL-FILTERS INC. located in Carson City, Nevada has been a family-owned and operated business since 1990. Over thirty years ago, our founder and father James Wimsatt, introduced impregnated charcoal polyester media in both range hood and microwave filter markets. Throughout the years, our engineers have continued to effectively refine existing products and develop new lines of filtration products for use in the green energy world.
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The liquid filters manufactured by the experts at Kavon Filter Products Company, Inc. are designed for paramount functionality. We offer distinguished solutions that are proven for high performance. These items are easy to maintain and we will assist with the installation processes. The hardware our teams manufacture is cutting-edge and we are confident these machines will last for many years to come.
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Worldwide, Sterlitech Corporation is one of the largest manufacturers of inorganic membrane liquid filters. Our reverse osmosis filters are used in health and safety industries. Other industrial filters include membrane disc filters used in laboratories, syringe filters and capsule filters.
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Liquid Filters

There are many different kinds of liquid filters. Chemical filters are used in instances where solute purification is needed; any equipment that is used to separate constituent materials in a flow of liquid can be referred to as a chemical filter. Strainers and cartridge filters are more commonly used when larger particles should be contained. These and bag filters are among the most popular types of filters and are used in a number of applications. Textile mills, cosmetics, food and chemical processing, refrigeration, automotive, petroleum and oil, paper and pulp, marine, electronic, photographic, printing, medical, waste treatment and pharmaceutical industries all can make use of these and other filter varieties. Biodiesel filters, gas filters, hydraulic filters and coolant filtration are all commonly employed to enable product recycling as well as better mechanical performance. Wet dry filters, though less applicable in many industrial environments, are also used because they offer the unique ability to act as both liquid and air filters, providing enhanced filtration capabilities. Industrial water filters are among the most common liquid filtration utilities. Necessary in virtually every manufacturing plant as well as commercial building, water filtration is essential not only to improved product quality and productivity, but also the health and safety of workers. Small scale reverse osmosis water filters are used in many residential settings as well, ensuring that everyone enjoys clean and clear drinking water.

While the overall purpose of filtration is by definition to remove particulates from a fluid process stream, there are three main goals of liquid filtration. Filters may be used to acquire the suspended materials, clarify the liquid or in many applications, both. To accommodate these differing needs, both cake and clarifying filters are widely available. A filter cake is the solid material removed from a fluid. A cake is formed when large quantities of solute or particulate build up on the intake surface of the filter media. It is easily removed, washed and even sorted. Valuable materials, such as oil or metallic dust, are commonly obtained through liquid filtration and easily recycled or reincorporated into the production process to reduce waste and cut costs. Cartridge and bag filters often provide cake buildup. Strainers and other types of filters, however, are used solely for purification purposes. Because only larger particles are captured, or suspensions with low percentages of solids are being processed, there is no visible buildup on the filter media. Cake filters may be used simply for clarification as well with the cake being disposed of during maintenance. It is important to consider the chemical composition of the solids and solutes present in a liquid sample in order to safely and properly handle or dispose of filter build up.

As with the final intention of liquid filtration, there are three main types of filtration products available. Though commonly all-inclusive, the word "filter" actually refers to the housing or holding mechanism of a filtration system. The chemical, mat or barrier that clarifies liquid is the filter media. Liquid filtering products are therefore available in three configurations. Bulk filter media is the material component alone and is commonly bought as replacement or refilling components. Multi-filament mesh, micro-fiber and spun materials are examples of the most popular media configurations. Purchased in larger quantities, these organic and synthetic materials are easily cut to size, shaped and otherwise suited to specific filters. The filters may likewise be purchased separately and are often made of durable materials such as steel, stainless steel, aluminum and thermoplastics. These include cartridges, holders and frames among other designs. These options are preferred for applications that require custom or replaceable components. The third and final product option, however, includes both filter media and filter housing. These come fully assembled for easy installation, use, maintenance and replacement, making them especially popular in domestic environments as well as those that entail frequent replacement or maintenance. Most pre-assembled units are fully disposable. Purchased partially or pre-assembled, all liquid filters operate under the same basic function. A liquid is passed through a semi-permeable or porous substance, the filter media, which allows the liquid molecules to pass through while inhibiting the passage of large particulates and chemicals.

Liquid filters are necessarily diverse as they must accommodate a wide range of industrial, commercial and domestic applications. These devices remove and separate solids, dusts, chemicals and even odors from a given liquid process stream. Application specific system configurations allow consumers to select what compounds will be filtered and to what degree. Micro-filtration systems stop everything larger than 0.1 µm, while ultra-filtration removes particulates as small as 0.001 µm. Particle size is not the only determining factor in filtering system selection. High-flow filtration systems are used for situations that have a high amount of particulate, water count or acid, while low-flow filtration systems are used for the opposite reasons. Bearing filtration systems are able to keep the filtered lubrication oil clean and, in effect, extend the life and effectiveness of the oil while maximizing its performance. Additionally, vacuum dehydration systems use vacuums to move liquid through the liquid filters at a high flow rate. Manufacturers and suppliers can provide helpful insight into the necessary liquid filtration for a specific use. In addition to flow, media material and particle size, consumers should consider the pressure drop, continuous versus batch operation, size, porosity, absorption, ply, stream composition and temperature, load capacity and the efficiency or accuracy of a given liquid filter.

Liquid Filters Manufacturers
Liquid Filters Manufacturers
Liquid Filters Manufacturers
Liquid Filters Manufacturers - Precision Filtration Products
Liquid Filters Manufacturers - Precision Filtration Products
Liquid Filters Manufacturers - Precision Filtration Products
Liquid Filters Manufacturers
Liquid Filters Manufacturers
Liquid Filters Manufacturers
Liquid Filters Manufacturers - Shelco Filters
Liquid Filters Manufacturers - Shelco Filters
Liquid Filters Manufacturers - Shelco Filters

Different Types of Liquid Filters

Since the law that mandates municipalities to provide pure and filtered water to people was passed, liquid filtration techniques have evolved a lot. There are a number of ways water is filtered for day-to-today use, including mechanical filtration, distillation, adsorption, ion exchange, reverse osmosis, and ozonation.

Mechanical liquid filtration

In this process, suspended contaminants are separated mechanically from water, using a variety of filter media. Mechanical filtration is obtained either in a tank or in a cartridge. Tank-type mechanical liquid filters have multiple layers of different media, including sands and gravels, activated alumina, activated carbon and copper-zinc alloy. These media physically block contaminants, successively. Once the media reach its service life, the media is disposed. Whereas in cartridge-type mechanical filter, two types of media are utilized, surface filtration media and depth liquid filtration. In surface filtration, water is strained through the filter medium, which captures certain size particle and develops a layer. The layer helps with further filtration. However, the filters used in surface filtration are clogged frequently, thus, need frequent maintenance. In depth filtration, the media have layers that effectively screen particles. The depth liquid filters work for a longer time. The media that are utilized in depth filtration includes pleated cellulose, pleated synthetic fabric, string wound fiber, and spun bonded polypropylene.


In this type of liquid filtration, the contaminants are adsorbed on the surface of an adsorbent media. The filtration involves physical and chemical forces. The contaminants adhere to the adsorbent surface because of physical adsorption, and the process is supplanted by chemical adsorption, as a chemical ionic process also takes place. The media used in adsorption includes activated carbon.

Reverse osmosis

In reverse osmosis liquid filtration, water in a concentrated solution is forced towards the less concentrated solution through a semi-permeable membrane, which selectively allows movement of materials. The reverse osmosis is not a natural phenomenon, thus, the water is pressured to move to less concentrated solution. The water discharged after the process has less dissolved contaminants and deemed suitable for drinking and other purposes.


In ozonation liquid filtration, ozone, a molecule consists of three oxygen atoms, is fed into water sources, which disinfects water and remove water quality issues, including odor and color. This is used as an alternative to the practice of using chlorine in water for disinfection purposes. The Ozone process leaves no traces of chemical and makes water healthy for consumption unlike chlorine disinfection, which has lead to many diseases.


Distillation is an old process to separate organic and inorganic material from water by evaporation. Distillation process effectively removes biological contaminants and inorganic minerals. The counter top distilling machines can produce up to five gallons of water per day, evidently the separation process is very slowly. Moreover, distillers need regular maintenance for them to work efficiently. Due to the limitations, distilling filters has fallen out of favor.

Steps Involved in Selecting Appropriate Liquid Filters

An array of liquid filters are available on the market, some promising to kill viruses, whereas others assure the removal of volatile organic compounds. The presence of different types of liquid filtration systems on the market puzzles many buyers, and they end up buying ones that do not the serve the purpose or needs maintenance more often than it works.

It is important for buyers to weigh all the factors carefully before committing to a model, design, and liquid filter technology. Steps that can help you to make an informed decision are as follows:

  • The first step involves identifying the contaminants that are required to be removed, as impurities in water vary from region to region. For instance, a water supply in southern America may have high concentration of calcium and nitrates, whereas, water in northern region may have a combination of contaminants, like arsenic, volatile compounds, microorganism, and even viruses. And since a single system cannot eliminate all the contaminants, it is necessary to identify contaminants in your region. For identifying them, a laboratory can help you that could carry out a water quality test. The laboratory should be certified, though. There is an alternative way to know the quality of water supplied to your home; it involves accessing the consumer confidence report that is released by community treatment plants. However, the report discusses the quality of water at the plant, not at your faucet, and pipelines and distribution system, including your house's plumbing can alter characteristics of water.
  • The next step is researching the liquid filters that complements with your requirements. By the water quality test, you will know what the primary contaminants in the water supply are. This information will help you to single out the system that can give you clean water. The options that you will come across include mechanical filters, distillation units, adsorption based filtration system, ion exchange, and reverse osmosis systems.
    1. Mechanical liquid filters physically remove particulates from water and needs to replaced once they are clogged, or else the captured impurities start to decompose can further impure your water.
    2. Distillation units, as the name implies, distill water to remove contaminants and the water cleaned is of high quality. However, the filtration rate is quite low; it takes a whole day to filter five gallons of water.
    3. Adsorption systems clean water by physical and chemical adsorption involving activated carbon and ionization; this system is not suitable for domestic uses and used for softening water.
    4. Reverse osmosis is a modern liquid filter, which with the help of auxiliary filters, like carbon filters, cartridge filters, and ultraviolet filtration, can clean water from a number of contaminants. This type of system has become a staple in industrial water filtration, community filtration, and domestic filtration.
  • Once you decide which type of system can fulfill you requirement, you need to go through a couple of factors, involving:
    1. Filtration rate and size of the unit
    2. Certification of system, all the parts used in a system should be certified.
    3. Examine the performance data
    4. Cost of a liquid filters, which involves the initial purchasing cost and maintenance cost.

A Brief History of Liquid Filters

Water is vital for life, thus, since antiquity, many ingenious ways have been invented to filter water for human consumption. The earliest written evidences regarding liquid filtering come from Egyptian and Indian civilization. There are Sanskrit writings that offer use of charcoal, sand, and boiling, as effective ways to clean water, whereas Egyptian inscriptions give insights how alum used as liquid filters. Alum was used to coagulate contaminants, which then were removed, making water healthy.

However, the first efforts were to filter visible contaminants and enhance the taste of water. Until then, the relationship between diseases and contaminated water was not established and was not discovered until a 17th century Dutch scientist, Antonie van Leeuwenhoek, made a microscope and studied water. He found microscopic bodies suspended in water, which looked clean with the naked eye. However, even then no direct relationship could be ascertained at that time. It took a couple more centuries for scientist to deduce how water carried disease-causing microbes and had caused large-scale casualties.

Around 500 BCE, a Greek physician, Hippocrates, discovered water could be sieved to capture sediments mixed in water; the liquid filters he made are known as "Hippocratic Sleeve." After Hippocrates, virtually no developments were made in liquid filter technology for 1000 years. Around the 17th century, experiments focusing on filtration systems started to emerge, and one of the most noted experiment involved desalination of water, which used a sand liquid filtration system. The experiment failed but it showed involved scientist a way to probe.

After this stimulus, liquid filters started to evolve, and various types of liquid filters came into existence. The most common liquid filters were charcoal, wool, and sponge based, which cleaned water by trapping even small contaminants.

In the mid of 19th century, it was revealed that Cholera is a water borne disease. Thus, inventors experimented with idea of large-scale water treatment systems, which would provide water to cities, just like the Roman aqueducts. Many water treatment plants were constructed, and rapid sand filtration and the use of chlorine for water disinfection become mainstreamed.

The next big development in the liquid filter technology originated in France when Ozone, a molecule with the chemical formula O3, was used for water treatment. At the same time, the ill effects of chlorine became apparent in the population and liquid filters were installed at home. It was the beginning of home water-filtration units. In the next 200 years, different liquid filtration systems emerged, like cartridge based filters, reverse osmosis water filter, and gas filters.

In the beginning of the 20th century, a desalination technique involving ion exchangers was invented; the salt particles were removed from water by exchanging them with sodium ions and other related cations.

The next step in desalination technique emerged in the 1950s, when the use of semi-permeable membranes was investigated at a research institute in the USA. However, the technique remained economically unviable for next 30 years. In the 1970s, municipalities on the coastal region embraced the technique, which made it viable for the public.

A Liquid Filter that Can Remove Almost Anything

The stress that industrialization has put on the ecosystem has resulted into the pollution of our water resources. Most resources are polluted to such an extent that water has become unfit for human consumption. Therefore, various types of liquid filters have populated the market, which promise to filter a range of contaminants, including nitrates, minerals, pesticides, arsenic, sulfates, dirt, fluoride, and microscopic organisms. Liquid filtration systems also promise to enhance the taste of water and remove the foul smell.

However, not all liquid filters can accomplish what they promise. Although, a system that comes close is reverse osmosis (RO) water filter, as the system has a number of parts that perform different functions.

As the name implies, the working principle of the system is reverse osmosis, which is not a natural process and requires external driving force; in a water filtration system, it is pressure exerted by a pump. The process is opposite of a natural phenomenon called osmosis; in osmosis, the water moves naturally from low-solute concentration region to high concentration through a semi-permeable membrane, which allows movement of selective materials. As the process is natural, it does need energy to occur. In reverse osmosis, water is forced to move from a region of more concentrated solution to a less concentrated solution through semi-permeable membrane. The process results in water with less concentration of dissolved solids, making it healthy for human consumption.

However, reverse osmosis is not the filtration step that is involved in a RO system. The system has a host of liquid filters is fitted at different stages.

The first filter through which the intake water passes through is the cartridge filter known as pre-filter, which removes contaminants, specifically particulates that can jam the membrane. In modern RO systems, an additional filter called a carbon filter is also installed before the membrane, which actively removes chlorine and related chemicals that are harmful and can damage the membrane.

Then, the water proceeds towards the membrane, which is made from polymer films and acts as a mechanical filter that screens most dissolved solids, including important salts and minerals. Therefore, a RO system is designed to give passage to important minerals and salts. At the end of the step, due the reverse osmosis, the resulting water is free from most dissolved solids and contaminants, such as heavy metals, microorganisms, and organic substances.

There are two types of membranes:

Thin Film Composite membrane

This type of film has a number of advantages, including bacterial and heat resistance, as well as filtering nitrates. However, the membrane is vulnerable to chlorine. The modern RO systems have thin film composite membranes.

Cellulose Triacetate membrane

The performance of this membrane is subpar in comparison to thin film composite membrane, as they work in a narrow pH range and show little to no resistance to bacteria in water. Moreover, temperature is a factor for its operation and does not reject nitrates; however, it has excellent resistance against chlorines.

After the RO process, the water again is passed through a secondary liquid filter, which captures what could not be caught earlier, including low molecular weight volatile compounds. Moreover, the advance RO system come with an ultraviolet filter, which can kill even viruses.

Types of Liquid Filters

  • Bag filters are receptacles that liquid is passed through to remove impurities.
  • Biodiesel filters are used to clean and clarify biodegradable and environmentally friendly fuel alternatives to petroleum diesel.
  • Carbon filters are filters that contain carbon in their solid state. They use absorption to remove unwanted soluble substances from water and can be found in many applications, including personal water filters and purifiers.
  • Cartridge filters have a receptacle that holds the filter media.
  • Chemical filters are used to remove chemicals with a carbon filter.
  • Coolant filtration is the process of removing suspended debris or other unwanted impurities from a process stream composed of chemical compounds designed to cool machine and engine components.
  • Filter media is the material through which liquid is passed to remove all particles and impurities.
  • Fuel filters are designed to filter sediments from fuel supplies because particulates are harmful to engines and can significantly decrease engine life.
  • Gas filters remove excess or unwanted debris and solutes suspended in gasoline that would otherwise impede performance and harm valuable engine components.
  • Hydraulic filters are liquid filtration devices designed especially to remove and eliminate contaminants and impurities from hydraulic fluids. More than 70% of all hydraulic systems failures are caused by fluid contamination.
  • Industrial water filters remove impurities from water in industrial settings.
  • Liquid filtration is the systematic removal of organic and synthetic impurities from a fluid process stream.
  • Pleated (convoluted or corrugated) filter elements consist of a number of uniform folds and generally have a geometric shape, such as a cone, cylinder, plate or others.
  • Reverse osmosis water filters use pressure to force water through thin, microporous films or sheets in order to trap or retain unwanted particulate impurities and dissolved solids.
  • Strainers are used in filtration systems to remove large particles.
  • T-type filters have both inlet and outlet ports situated at one end. The ports of their major axes are in a straight line with the axis of the filter element perpendicular to the line.
  • Water filter systems are complete units that begin with a "dirty" water source and result in a purified end product. In the system, unpurified water is filtered and then acquired as a "clean" product.
  • Wet dry filters have filter elements that are designed to filter particle matter from both air and water. They can be found in wet/dry vacuum cleaners and fish aquariums.

Liquid Filters Terms

Absolute Filtration Rating (AFR) - The diameter of the largest spherical particle that is able to pass through a filter in certain testing conditions. The AFR indicates the biggest opening in any given filter element.

Absorption - A process by which a solid is employed in the removal of a soluble substance from water.

Beta Ratio - The number of similar-sized particles moving upstream through a filter in a ratio to the number of particles moving downstream.

Bridging - A condition in which particles fill and block the entire area between adjacent sections of a filter.

Bubble Point - The gas pressure at which a constant stream of gas bubbles is released from a wet filter element under specified testing conditions.

Bypass (Relief) Valve - A mechanism that ensures proper fluid flow when pre-selected flow levels are surpassed. The valve allows for part or all of the fluid to bypass the filter.

Channeling - The tendency of contaminating particles to pass through a low-density area of a poor filter around its seal points.

Clarification - The filtering of liquids that have only a small amount of solid particles.

Collapse Pressure - Maximum pressure a filter element can withstand without any permanent deformation(s).

Cycle Length/Filter Life - The amount of time that a filter is able to operate effectively before it needs to be cleaned or replaced.

Differential Pressure - Difference in pressure between any two positions of a component or system.

Effective Area - Area of the filter element that is exposed to fluid flow.

Efficiency - Ability of a filter element to remove a particular contaminant at a specified contaminant concentration. Efficiency is typically expressed as a percentage.

Element (Medium) - The porous material that performs the actual filtration process.

Housing - An enclosure that directs the fluid flow through the filter element.

Mean Filtration Rating - The average size of the pores of a given filter media.

Media Migration - The release into the flowing fluid of components that make up the filter media.

Pore - A small opening in a filter that allows fluid to pass.

Rated Flow - Optimal flow for which a certain filter is designed.

System Silting - Collection and settling of micro-sized particles inside a fluid system.

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