FILTERSBUYING GUIDE

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FILTERS A ThomasNet Buying Guide

Filters are systems or elements used to remove

substances such as dust or dirt or electronic signals

etc as they pass through filtering media or devices

Filters are available for filtering air or gases fluids as

well as electrical and optical phenomena Air filters are used for cleaning air Electronic filters clean

electrical signals of unwanted frequencies in the audio and intermediate ranges while RF and microwave

filters have the same function but in the radio and microwave frequency range EMI and RFI filters

minimize or eliminate electromagnetic interferences Fluid filters remove debris from fluids Fuel filters

remove contaminants from fuels while hydraulic filters remove contaminants from hydraulic fluids

Water filters clean water not only for drinking and swimming but in water treatment plants as well

Optical filters pass light and filter light wavelengths

Types of Filters

Air Filters Air Filters are systems or components that remove

particulates from air as it passes through filtering elements

and can be complete systems or replacement elements

alone Key specifications include the intended application

physical size filter type filter media and air flow rate Air

filters are used in systems that require particulate-free air

They are used also to clean the air before exhausting it An

air filter system usually consists of a filter element and the

housing that contains the element They come in shapes for

specific applications such as automobile engines

cleanrooms range hoods or furnaces An air filter can remove a variety of filtrands including dusts

fumes oils and bacteria

Electronic Filters Electronic Filters are used primarily to process electronic

signals by removing unwanted frequency components or

enhancing others They usually operate at frequencies

below RF (radio frequency) Typical operating frequencies

ranges are AF (audio frequency) or IF (intermediate

frequency) both of which are power frequencies There

are many types of and functions for electronic filters

including passive or active analog or digital and low pass and

high pass Electronic filters are also used to minimize or eliminate

electrical noise

EMIRFI Filters EMIRFI Filters are electrical devices that eliminate or minimize

EMI (electromagnetic interference) or RFI (radio frequency

interference) within a system Key specifications include the

intended application filter type electrical characteristics including voltage current and frequency

ratings as well as bandwidth EMIRFI filters are used primarily in electronic and telecommunication

applications to minimize or eliminate EMI or RFI signals that interfere with the performance of an

electrical product or system The filter is normally placed between an AC power line and the equipment

requiring the protection Versions can also be placed on PCBs incorporated in connectors or used as

stand-alone components for mounting in utility cabinets The filters may also work to eliminate EMIRFI

emissions from the equipment

Fluid Filters Fluid Filters are devices or systems that remove unwanted substances from fluids as they pass through

the filtering elements They may include complete systems or the replacement elements alone Key

specifications include the intended application filter type filter media filtrate and filtrand particulate

size and flow rate Fluid filters are used primarily in any

system that requires the fluid to be free of particulates or

debris either to protect the equipment or to clean the

fluid before it is discharged into the environment A fluid

filter system usually consists of a filter element and a

housing They come shaped for specific applications such

as engine oil filters cooling system filters and

metalworking fluid filters The filter media can be made of

a variety of materials including cloth foam carbon

sintered metals etc

Fuel Filters Fuel Filters are devices that remove unwanted materials

from a fuel system as the fuel passes through it and may

include a complete system or the replacement element

Key specifications include the intended application

filtrate particulate size and flow rate as well as the

physical dimensions Fuel filters are used primarily to

filter debris or unwanted substances from fuel to protect

the equipment as well as allowing the fuel to burn more

efficiently The filters are usually designed for a specific

application such as a diesel or aircraft engine or for the

filling of tanks etc and are available in a variety of shapes

and sizes depending on the required application

Hydraulic Filters Hydraulic Filters are devices or systems that remove

contaminants from hydraulic fluids and may include

complete systems or the replacement elements alone Key

specifications include the filter type filter material and the physical dimensions Hydraulic filters are

used primarily for filtering unwanted debris or contaminants from fluids for use in hydraulic cylinders or

with other systems that use hydraulic fluids Depending on the application the filters may require

different materials or types Components often remove particulates

Optical Filters Optical Filters are devices placed in the paths of light sources to

allow only specific wavelengths to pass or be transmitted Key

specifications include the intended application material

wavelength characteristics and physical dimensions Optical

filters are used primarily in photographic applications but can be

used in other scientific or technical work as well Many types of

optical filters can be found including UV infrared or band pass

among several others each having a specific function allowing a

specific wavelength or range of wavelengths to be transmitted

Some are specific to photography and may not be applicable in

technical work

RF and Microwave Filters RF and Microwave Filters are electrical devices that either block or pass specific frequencies Key

specifications include the intended application filter type and frequency characteristics RF and

microwave filters are used primarily to process electronic signals by removing unwanted frequency

components or enhancing others They usually operate at radio frequency ranges (megahertz and

gigahertz) and at microwave frequencies Various types of filters area available including low pass high

pass band pass as well as reject pass each having a specific

wavelength or range of wavelengths that is either blocked or

transmitted

Water Filters Water Filters are devices or systems that remove contaminants from

water and may include complete systems or the replacement

elements alone Key specifications include the intended application

flow rate particulate size and the physical dimensions Water filters

are used primarily in any system that requires the water to be filtered

or cleaned to remove debris and particulates Many applications use

water filters including water parks refrigerators aquariums

wastewater facilities etc The filters are available in various sizes and

types depending on the application

Applications and Industries Filters that process fluids such as air fuel water hydraulic oil etc generally rely on paper foam or

other similar materials whose pore sizes can be controlled to pass only materials below certain sizes

Designs are many and varied including baffled pleated spiral wound finned etc Filters are often

replaceable and are sold as complete assemblies of housings and filtering elements or are available as

elements only Filters tend to be application specific Household water filters are a common

representation of the housingcartridge design Other filtering systems are designed to be cleaned such

as sand filters used for water filtering which are often backflushed to restore capacity

Flow rate and pressure drop are important considerations when selecting fluid filters because any

filtering element in a flow stream will diminish the pressure of an incoming stream In general the more

restrictive the filter is the more it will diminish flow rate and pressure

Air filters are used by HVAC systems spray booths compressors engines electronics enclosures

cleanrooms etc wherever incoming air needs to be cleaned of particulates dust odors microbes and

so on They are used on the discharge side of many industrial processes where process air must be

cleaned before being returned to the environment Air filters are used in compressed air systems often

as parts of assemblies called Filter-Regulator-Lubricators (FRLs) where they filter air used in powering

compressed air devices Respirators and facemasks often use replaceable filter cartridges as personal

protective devices

Water filters are used by waterworks swimming pools households campers etc to remove impurities

prior to drinking bathing and so on They are used in many industrial processes as well to clean cooling

water boiler feed water etc Filtering media can be any of a number of materials ranging from sintered

metal to charcoal Among the materials removed from water (aka the filtrand) biological impurities

fuels various mineralschemicals and sediments are particularly common

Fuel filters are almost invariably of the cartridgereplaceable element type or of the fully disposable

variety They are used on engines fueling equipment oil burners etc to remove particulates and water

from gasoline and fuel oil

Hydraulic filters are used for filtering hydraulic fluids used in fluid power systems They are often

available as spin-on types similar to the designs used for automotive engines Some common

applications of hydraulic filters include control systems for power plants steel mills pulp and paper

mills in addition to their everyday application to hydraulic construction equipment

Although all of the above filters process fluids fluid filters captures the less common forms of fluid

filtration such as foods wines and spirits natural gas automotive oil etc These can be fairly generic

filters such as spin-on engine oil filters or fairly specialized such as the filters used with plating

chemicals

Electronic EMIRFI and RF and Microwave filters work in the electromagnetic spectrum They are used

in military and industrial settings to remove unwanted signals electronic noise etc Some applications

include data acquisition systems variable frequency drives etc

Optical filters are the chiefly used in photography and imaging though they are found in other

applications in searchlights for instance

Considerations Fluid filter buyers can specify housings with filters or the filters alone to fit existing housings Air filters

are available in many stock and common sizes and finding a fit is usually a length x width x height

proposition For air filters that have elements only specifiers can select the filter type be it cartridge

compressed air inline membrane pad panel screen or vacuum Specifiers looking for filters that

include the housings can select theses same choices by leaving off the part that states ldquoelement onlyrdquo

The same selections of housings or only elements apply to water fuel fluid and hydraulic filters

Dimensional selection is not often as forthright for these filters as it is for air filters because often the

filters are held in circular housings or are threaded on requiring additional attributes to describe the fit

Many such filters are manufacturer specific Oil filter manufacturers tend to cover all models of cars on

the other hand

Water filters designed for larger scale filtering beyond the household realm often rely on sand as the

filtering media and have no elements per se These are designed to be backflushed with clean water to

remove the filtrand so that the sand can be reused Often sand filtering can remove particles and

sediment in the 20-30 micron range Carbon filtering is often used to remove odors and taste Reverse

osmosis filtering uses high pressure to force water through membranes where it can desalinate sea

water etc usually relying on some forms of pre-filtering and carbon polishing in addition to the

membrane treatment Reverse osmosis filtering can range from small household units for drinking water

to large scale industrial units that make water for critical processes such as food and beverage

manufacturing

Fluid filters are used for removing tramp oils and metals from metalworking coolants Other fluid filters

are used to remove oil from degreasing fluids Still other fluid filters remove water from natural gas

Hydraulic filters are usually chosen based on pressure capacity with 100 3000 and 6000 psi being

common upper limits They are commonly supplied with SAE port configurations

Important Attributes

Maximum Flowrate Flowrate is typically measured in cubic feetmin (cfm) for air filters and gallonsminute ( gpm) for liquid

filters

Intended Application Selecting the filter application is a good way to find appropriate filters without having to decide whether

it is a fuel filter fluid filter etc that is needed Picking something like diesel and gas engine filters might

return air filters fuel filters and fluid filters however when what you really want is an automotive oil

filter

Filtrate Filtrate describes the media that passes through the filter Picking oil here will produce hydraulic filters

automobile engine filters and the like

Filtrand Filtrand describes the material that the filter takes out of the filtrate Picking oil here will produce water

filters and the like Similarly checking oil as the filtrand and paint as the filtrate will produce filters which

remove oils from paints as may be useful for spray painting

Filter Type For air and other fluid handling filters selecting any of the element only choices will return replacement

filters for existing housings Filter type for electronic EMIRFI and RF and microwave filters can specify

which signals are allowed through (low pass etc) as well as specific filter types such as Butterworth etc

Some similar types can be selected here for optical filters

Filter Media Filter media refers to the filtering agent that the filter uses and not the raw material itself That is if you

are searching for an activated carbon filter cartridge you would find it here whereas if you were looking

to buy activated carbon in bulk form you would search under the media itself ie carbon sand perlite

diatomaceous earth etc

Related Product Categories

DustFumeMist Collectors are mechanical devices that filter dust and contaminants from air

before releasing the cleaned air into the environment

Dust Control Booths are semi-enclosed structures that aid in collecting or filtering dusts or other

contaminants from the air that result from factory or shop operations

Pressure Regulators are mechanical devices that control the pressure of fluid in systems

Regulators are often combined with other components such as filters

Screening Separators are systems consisting of mechanical screens where mixtures of ore coal

etc are separated according to size

Afterfilters are devices that consist of filter elements which are used for filtering air prior to

releasing it into the environment

Coalescers

Electronic Amplifiers are devices consisting of electronic components with specific circuitry and

controls designed to boost or increase electronic signals while retaining the shape of the

original waveforms

Lenses are optical devices that change the direction of light as it passes through them

Respirators and Facemasks are personal protective devices worn on the face to guard against

airborne contaminants

Strainers are used to remove solids from fluids Strainers are a subgroup of filters that are used

to remove large (visible) particles-- generally 50 microns or larger

Cyclones

Perlite

Earth Diatomaceous earth can be found here

Presses Filter presses can be found here

Media Water purification media can be found here

Sand Filter sand can be found here

General Guide to Electrical Filters

httpwwwticomlitansnoa224asnoa224apdf

Guide to Sediment Filtration

httpcatalogkeystonefiltercomAssetSediment_Filtrationpdf

Manufacturers and Suppliers Air Filters

httpproductsfabtexfilterscomcategoryall-categories

httpbeckerassociatesthomasnetcom

FILTERS A ThomasNet Buying Guide

Filters are systems or elements used to remove

substances such as dust or dirt or electronic signals

etc as they pass through filtering media or devices

Filters are available for filtering air or gases fluids as

well as electrical and optical phenomena Air filters are used for cleaning air Electronic filters clean

electrical signals of unwanted frequencies in the audio and intermediate ranges while RF and microwave

filters have the same function but in the radio and microwave frequency range EMI and RFI filters

minimize or eliminate electromagnetic interferences Fluid filters remove debris from fluids Fuel filters

remove contaminants from fuels while hydraulic filters remove contaminants from hydraulic fluids

Water filters clean water not only for drinking and swimming but in water treatment plants as well

Optical filters pass light and filter light wavelengths

Types of Filters

Air Filters Air Filters are systems or components that remove

particulates from air as it passes through filtering elements

and can be complete systems or replacement elements

alone Key specifications include the intended application

physical size filter type filter media and air flow rate Air

filters are used in systems that require particulate-free air

They are used also to clean the air before exhausting it An

air filter system usually consists of a filter element and the

housing that contains the element They come in shapes for

specific applications such as automobile engines

cleanrooms range hoods or furnaces An air filter can remove a variety of filtrands including dusts

fumes oils and bacteria

Electronic Filters Electronic Filters are used primarily to process electronic

signals by removing unwanted frequency components or

enhancing others They usually operate at frequencies

below RF (radio frequency) Typical operating frequencies

ranges are AF (audio frequency) or IF (intermediate

frequency) both of which are power frequencies There

are many types of and functions for electronic filters

including passive or active analog or digital and low pass and

high pass Electronic filters are also used to minimize or eliminate

electrical noise

EMIRFI Filters EMIRFI Filters are electrical devices that eliminate or minimize

EMI (electromagnetic interference) or RFI (radio frequency

interference) within a system Key specifications include the

intended application filter type electrical characteristics including voltage current and frequency

ratings as well as bandwidth EMIRFI filters are used primarily in electronic and telecommunication

applications to minimize or eliminate EMI or RFI signals that interfere with the performance of an

electrical product or system The filter is normally placed between an AC power line and the equipment

requiring the protection Versions can also be placed on PCBs incorporated in connectors or used as

stand-alone components for mounting in utility cabinets The filters may also work to eliminate EMIRFI

emissions from the equipment

Fluid Filters Fluid Filters are devices or systems that remove unwanted substances from fluids as they pass through

the filtering elements They may include complete systems or the replacement elements alone Key

specifications include the intended application filter type filter media filtrate and filtrand particulate

size and flow rate Fluid filters are used primarily in any

system that requires the fluid to be free of particulates or

debris either to protect the equipment or to clean the

fluid before it is discharged into the environment A fluid

filter system usually consists of a filter element and a

housing They come shaped for specific applications such

as engine oil filters cooling system filters and

metalworking fluid filters The filter media can be made of

a variety of materials including cloth foam carbon

sintered metals etc

Fuel Filters Fuel Filters are devices that remove unwanted materials

from a fuel system as the fuel passes through it and may

include a complete system or the replacement element

Key specifications include the intended application

filtrate particulate size and flow rate as well as the

physical dimensions Fuel filters are used primarily to

filter debris or unwanted substances from fuel to protect

the equipment as well as allowing the fuel to burn more

efficiently The filters are usually designed for a specific

application such as a diesel or aircraft engine or for the

filling of tanks etc and are available in a variety of shapes

and sizes depending on the required application

Hydraulic Filters Hydraulic Filters are devices or systems that remove

contaminants from hydraulic fluids and may include

complete systems or the replacement elements alone Key

specifications include the filter type filter material and the physical dimensions Hydraulic filters are

used primarily for filtering unwanted debris or contaminants from fluids for use in hydraulic cylinders or

with other systems that use hydraulic fluids Depending on the application the filters may require

different materials or types Components often remove particulates

Optical Filters Optical Filters are devices placed in the paths of light sources to

allow only specific wavelengths to pass or be transmitted Key

specifications include the intended application material

wavelength characteristics and physical dimensions Optical

filters are used primarily in photographic applications but can be

used in other scientific or technical work as well Many types of

optical filters can be found including UV infrared or band pass

among several others each having a specific function allowing a

specific wavelength or range of wavelengths to be transmitted

Some are specific to photography and may not be applicable in

technical work

RF and Microwave Filters RF and Microwave Filters are electrical devices that either block or pass specific frequencies Key

specifications include the intended application filter type and frequency characteristics RF and

microwave filters are used primarily to process electronic signals by removing unwanted frequency

components or enhancing others They usually operate at radio frequency ranges (megahertz and

gigahertz) and at microwave frequencies Various types of filters area available including low pass high

pass band pass as well as reject pass each having a specific

wavelength or range of wavelengths that is either blocked or

transmitted

Water Filters Water Filters are devices or systems that remove contaminants from

water and may include complete systems or the replacement

elements alone Key specifications include the intended application

flow rate particulate size and the physical dimensions Water filters

are used primarily in any system that requires the water to be filtered

or cleaned to remove debris and particulates Many applications use

water filters including water parks refrigerators aquariums

wastewater facilities etc The filters are available in various sizes and

types depending on the application

Applications and Industries Filters that process fluids such as air fuel water hydraulic oil etc generally rely on paper foam or

other similar materials whose pore sizes can be controlled to pass only materials below certain sizes

Designs are many and varied including baffled pleated spiral wound finned etc Filters are often

replaceable and are sold as complete assemblies of housings and filtering elements or are available as

elements only Filters tend to be application specific Household water filters are a common

representation of the housingcartridge design Other filtering systems are designed to be cleaned such

as sand filters used for water filtering which are often backflushed to restore capacity

Flow rate and pressure drop are important considerations when selecting fluid filters because any

filtering element in a flow stream will diminish the pressure of an incoming stream In general the more

restrictive the filter is the more it will diminish flow rate and pressure

Air filters are used by HVAC systems spray booths compressors engines electronics enclosures

cleanrooms etc wherever incoming air needs to be cleaned of particulates dust odors microbes and

so on They are used on the discharge side of many industrial processes where process air must be

cleaned before being returned to the environment Air filters are used in compressed air systems often

as parts of assemblies called Filter-Regulator-Lubricators (FRLs) where they filter air used in powering

compressed air devices Respirators and facemasks often use replaceable filter cartridges as personal

protective devices

Water filters are used by waterworks swimming pools households campers etc to remove impurities

prior to drinking bathing and so on They are used in many industrial processes as well to clean cooling

water boiler feed water etc Filtering media can be any of a number of materials ranging from sintered

metal to charcoal Among the materials removed from water (aka the filtrand) biological impurities

fuels various mineralschemicals and sediments are particularly common

Fuel filters are almost invariably of the cartridgereplaceable element type or of the fully disposable

variety They are used on engines fueling equipment oil burners etc to remove particulates and water

from gasoline and fuel oil

Hydraulic filters are used for filtering hydraulic fluids used in fluid power systems They are often

available as spin-on types similar to the designs used for automotive engines Some common

applications of hydraulic filters include control systems for power plants steel mills pulp and paper

mills in addition to their everyday application to hydraulic construction equipment

Although all of the above filters process fluids fluid filters captures the less common forms of fluid

filtration such as foods wines and spirits natural gas automotive oil etc These can be fairly generic

filters such as spin-on engine oil filters or fairly specialized such as the filters used with plating

chemicals

Electronic EMIRFI and RF and Microwave filters work in the electromagnetic spectrum They are used

in military and industrial settings to remove unwanted signals electronic noise etc Some applications

include data acquisition systems variable frequency drives etc

Optical filters are the chiefly used in photography and imaging though they are found in other

applications in searchlights for instance

Considerations Fluid filter buyers can specify housings with filters or the filters alone to fit existing housings Air filters

are available in many stock and common sizes and finding a fit is usually a length x width x height

proposition For air filters that have elements only specifiers can select the filter type be it cartridge

compressed air inline membrane pad panel screen or vacuum Specifiers looking for filters that

include the housings can select theses same choices by leaving off the part that states ldquoelement onlyrdquo

The same selections of housings or only elements apply to water fuel fluid and hydraulic filters

Dimensional selection is not often as forthright for these filters as it is for air filters because often the

filters are held in circular housings or are threaded on requiring additional attributes to describe the fit

Many such filters are manufacturer specific Oil filter manufacturers tend to cover all models of cars on

the other hand

Water filters designed for larger scale filtering beyond the household realm often rely on sand as the

filtering media and have no elements per se These are designed to be backflushed with clean water to

remove the filtrand so that the sand can be reused Often sand filtering can remove particles and

sediment in the 20-30 micron range Carbon filtering is often used to remove odors and taste Reverse

osmosis filtering uses high pressure to force water through membranes where it can desalinate sea

water etc usually relying on some forms of pre-filtering and carbon polishing in addition to the

membrane treatment Reverse osmosis filtering can range from small household units for drinking water

to large scale industrial units that make water for critical processes such as food and beverage

manufacturing

Fluid filters are used for removing tramp oils and metals from metalworking coolants Other fluid filters

are used to remove oil from degreasing fluids Still other fluid filters remove water from natural gas

Hydraulic filters are usually chosen based on pressure capacity with 100 3000 and 6000 psi being

common upper limits They are commonly supplied with SAE port configurations

Important Attributes

Maximum Flowrate Flowrate is typically measured in cubic feetmin (cfm) for air filters and gallonsminute ( gpm) for liquid

filters

Intended Application Selecting the filter application is a good way to find appropriate filters without having to decide whether

it is a fuel filter fluid filter etc that is needed Picking something like diesel and gas engine filters might

return air filters fuel filters and fluid filters however when what you really want is an automotive oil

filter

Filtrate Filtrate describes the media that passes through the filter Picking oil here will produce hydraulic filters

automobile engine filters and the like

Filtrand Filtrand describes the material that the filter takes out of the filtrate Picking oil here will produce water

filters and the like Similarly checking oil as the filtrand and paint as the filtrate will produce filters which

remove oils from paints as may be useful for spray painting

Filter Type For air and other fluid handling filters selecting any of the element only choices will return replacement

filters for existing housings Filter type for electronic EMIRFI and RF and microwave filters can specify

which signals are allowed through (low pass etc) as well as specific filter types such as Butterworth etc

Some similar types can be selected here for optical filters

Filter Media Filter media refers to the filtering agent that the filter uses and not the raw material itself That is if you

are searching for an activated carbon filter cartridge you would find it here whereas if you were looking

to buy activated carbon in bulk form you would search under the media itself ie carbon sand perlite

diatomaceous earth etc

Related Product Categories

DustFumeMist Collectors are mechanical devices that filter dust and contaminants from air

before releasing the cleaned air into the environment

Dust Control Booths are semi-enclosed structures that aid in collecting or filtering dusts or other

contaminants from the air that result from factory or shop operations

Pressure Regulators are mechanical devices that control the pressure of fluid in systems

Regulators are often combined with other components such as filters

Screening Separators are systems consisting of mechanical screens where mixtures of ore coal

etc are separated according to size

Afterfilters are devices that consist of filter elements which are used for filtering air prior to

releasing it into the environment

Coalescers

Electronic Amplifiers are devices consisting of electronic components with specific circuitry and

controls designed to boost or increase electronic signals while retaining the shape of the

original waveforms

Lenses are optical devices that change the direction of light as it passes through them

Respirators and Facemasks are personal protective devices worn on the face to guard against

airborne contaminants

Strainers are used to remove solids from fluids Strainers are a subgroup of filters that are used

to remove large (visible) particles-- generally 50 microns or larger

Cyclones

Perlite

Earth Diatomaceous earth can be found here

Presses Filter presses can be found here

Media Water purification media can be found here

Sand Filter sand can be found here

General Guide to Electrical Filters

httpwwwticomlitansnoa224asnoa224apdf

Guide to Sediment Filtration

httpcatalogkeystonefiltercomAssetSediment_Filtrationpdf

Manufacturers and Suppliers Air Filters

httpproductsfabtexfilterscomcategoryall-categories

httpbeckerassociatesthomasnetcom

including passive or active analog or digital and low pass and

high pass Electronic filters are also used to minimize or eliminate

electrical noise

EMIRFI Filters EMIRFI Filters are electrical devices that eliminate or minimize

EMI (electromagnetic interference) or RFI (radio frequency

interference) within a system Key specifications include the

intended application filter type electrical characteristics including voltage current and frequency

ratings as well as bandwidth EMIRFI filters are used primarily in electronic and telecommunication

applications to minimize or eliminate EMI or RFI signals that interfere with the performance of an

electrical product or system The filter is normally placed between an AC power line and the equipment

requiring the protection Versions can also be placed on PCBs incorporated in connectors or used as

stand-alone components for mounting in utility cabinets The filters may also work to eliminate EMIRFI

emissions from the equipment

Fluid Filters Fluid Filters are devices or systems that remove unwanted substances from fluids as they pass through

the filtering elements They may include complete systems or the replacement elements alone Key

specifications include the intended application filter type filter media filtrate and filtrand particulate

size and flow rate Fluid filters are used primarily in any

system that requires the fluid to be free of particulates or

debris either to protect the equipment or to clean the

fluid before it is discharged into the environment A fluid

filter system usually consists of a filter element and a

housing They come shaped for specific applications such

as engine oil filters cooling system filters and

metalworking fluid filters The filter media can be made of

a variety of materials including cloth foam carbon

sintered metals etc

Fuel Filters Fuel Filters are devices that remove unwanted materials

from a fuel system as the fuel passes through it and may

include a complete system or the replacement element

Key specifications include the intended application

filtrate particulate size and flow rate as well as the

physical dimensions Fuel filters are used primarily to

filter debris or unwanted substances from fuel to protect

the equipment as well as allowing the fuel to burn more

efficiently The filters are usually designed for a specific

application such as a diesel or aircraft engine or for the

filling of tanks etc and are available in a variety of shapes

and sizes depending on the required application

Hydraulic Filters Hydraulic Filters are devices or systems that remove

contaminants from hydraulic fluids and may include

complete systems or the replacement elements alone Key

specifications include the filter type filter material and the physical dimensions Hydraulic filters are

used primarily for filtering unwanted debris or contaminants from fluids for use in hydraulic cylinders or

with other systems that use hydraulic fluids Depending on the application the filters may require

different materials or types Components often remove particulates

Optical Filters Optical Filters are devices placed in the paths of light sources to

allow only specific wavelengths to pass or be transmitted Key

specifications include the intended application material

wavelength characteristics and physical dimensions Optical

filters are used primarily in photographic applications but can be

used in other scientific or technical work as well Many types of

optical filters can be found including UV infrared or band pass

among several others each having a specific function allowing a

specific wavelength or range of wavelengths to be transmitted

Some are specific to photography and may not be applicable in

technical work

RF and Microwave Filters RF and Microwave Filters are electrical devices that either block or pass specific frequencies Key

specifications include the intended application filter type and frequency characteristics RF and

microwave filters are used primarily to process electronic signals by removing unwanted frequency

components or enhancing others They usually operate at radio frequency ranges (megahertz and

gigahertz) and at microwave frequencies Various types of filters area available including low pass high

pass band pass as well as reject pass each having a specific

wavelength or range of wavelengths that is either blocked or

transmitted

Water Filters Water Filters are devices or systems that remove contaminants from

water and may include complete systems or the replacement

elements alone Key specifications include the intended application

flow rate particulate size and the physical dimensions Water filters

are used primarily in any system that requires the water to be filtered

or cleaned to remove debris and particulates Many applications use

water filters including water parks refrigerators aquariums

wastewater facilities etc The filters are available in various sizes and

types depending on the application

Applications and Industries Filters that process fluids such as air fuel water hydraulic oil etc generally rely on paper foam or

other similar materials whose pore sizes can be controlled to pass only materials below certain sizes

Designs are many and varied including baffled pleated spiral wound finned etc Filters are often

replaceable and are sold as complete assemblies of housings and filtering elements or are available as

elements only Filters tend to be application specific Household water filters are a common

representation of the housingcartridge design Other filtering systems are designed to be cleaned such

as sand filters used for water filtering which are often backflushed to restore capacity

Flow rate and pressure drop are important considerations when selecting fluid filters because any

filtering element in a flow stream will diminish the pressure of an incoming stream In general the more

restrictive the filter is the more it will diminish flow rate and pressure

Air filters are used by HVAC systems spray booths compressors engines electronics enclosures

cleanrooms etc wherever incoming air needs to be cleaned of particulates dust odors microbes and

so on They are used on the discharge side of many industrial processes where process air must be

cleaned before being returned to the environment Air filters are used in compressed air systems often

as parts of assemblies called Filter-Regulator-Lubricators (FRLs) where they filter air used in powering

compressed air devices Respirators and facemasks often use replaceable filter cartridges as personal

protective devices

Water filters are used by waterworks swimming pools households campers etc to remove impurities

prior to drinking bathing and so on They are used in many industrial processes as well to clean cooling

water boiler feed water etc Filtering media can be any of a number of materials ranging from sintered

metal to charcoal Among the materials removed from water (aka the filtrand) biological impurities

fuels various mineralschemicals and sediments are particularly common

Fuel filters are almost invariably of the cartridgereplaceable element type or of the fully disposable

variety They are used on engines fueling equipment oil burners etc to remove particulates and water

from gasoline and fuel oil

Hydraulic filters are used for filtering hydraulic fluids used in fluid power systems They are often

available as spin-on types similar to the designs used for automotive engines Some common

applications of hydraulic filters include control systems for power plants steel mills pulp and paper

mills in addition to their everyday application to hydraulic construction equipment

Although all of the above filters process fluids fluid filters captures the less common forms of fluid

filtration such as foods wines and spirits natural gas automotive oil etc These can be fairly generic

filters such as spin-on engine oil filters or fairly specialized such as the filters used with plating

chemicals

Electronic EMIRFI and RF and Microwave filters work in the electromagnetic spectrum They are used

in military and industrial settings to remove unwanted signals electronic noise etc Some applications

include data acquisition systems variable frequency drives etc

Optical filters are the chiefly used in photography and imaging though they are found in other

applications in searchlights for instance

Considerations Fluid filter buyers can specify housings with filters or the filters alone to fit existing housings Air filters

are available in many stock and common sizes and finding a fit is usually a length x width x height

proposition For air filters that have elements only specifiers can select the filter type be it cartridge

compressed air inline membrane pad panel screen or vacuum Specifiers looking for filters that

include the housings can select theses same choices by leaving off the part that states ldquoelement onlyrdquo

The same selections of housings or only elements apply to water fuel fluid and hydraulic filters

Dimensional selection is not often as forthright for these filters as it is for air filters because often the

filters are held in circular housings or are threaded on requiring additional attributes to describe the fit

Many such filters are manufacturer specific Oil filter manufacturers tend to cover all models of cars on

the other hand

Water filters designed for larger scale filtering beyond the household realm often rely on sand as the

filtering media and have no elements per se These are designed to be backflushed with clean water to

remove the filtrand so that the sand can be reused Often sand filtering can remove particles and

sediment in the 20-30 micron range Carbon filtering is often used to remove odors and taste Reverse

osmosis filtering uses high pressure to force water through membranes where it can desalinate sea

water etc usually relying on some forms of pre-filtering and carbon polishing in addition to the

membrane treatment Reverse osmosis filtering can range from small household units for drinking water

to large scale industrial units that make water for critical processes such as food and beverage

manufacturing

Fluid filters are used for removing tramp oils and metals from metalworking coolants Other fluid filters

are used to remove oil from degreasing fluids Still other fluid filters remove water from natural gas

Hydraulic filters are usually chosen based on pressure capacity with 100 3000 and 6000 psi being

common upper limits They are commonly supplied with SAE port configurations

Important Attributes

Maximum Flowrate Flowrate is typically measured in cubic feetmin (cfm) for air filters and gallonsminute ( gpm) for liquid

filters

Intended Application Selecting the filter application is a good way to find appropriate filters without having to decide whether

it is a fuel filter fluid filter etc that is needed Picking something like diesel and gas engine filters might

return air filters fuel filters and fluid filters however when what you really want is an automotive oil

filter

Filtrate Filtrate describes the media that passes through the filter Picking oil here will produce hydraulic filters

automobile engine filters and the like

Filtrand Filtrand describes the material that the filter takes out of the filtrate Picking oil here will produce water

filters and the like Similarly checking oil as the filtrand and paint as the filtrate will produce filters which

remove oils from paints as may be useful for spray painting

Filter Type For air and other fluid handling filters selecting any of the element only choices will return replacement

filters for existing housings Filter type for electronic EMIRFI and RF and microwave filters can specify

which signals are allowed through (low pass etc) as well as specific filter types such as Butterworth etc

Some similar types can be selected here for optical filters

Filter Media Filter media refers to the filtering agent that the filter uses and not the raw material itself That is if you

are searching for an activated carbon filter cartridge you would find it here whereas if you were looking

to buy activated carbon in bulk form you would search under the media itself ie carbon sand perlite

diatomaceous earth etc

Related Product Categories

DustFumeMist Collectors are mechanical devices that filter dust and contaminants from air

before releasing the cleaned air into the environment

Dust Control Booths are semi-enclosed structures that aid in collecting or filtering dusts or other

contaminants from the air that result from factory or shop operations

Pressure Regulators are mechanical devices that control the pressure of fluid in systems

Regulators are often combined with other components such as filters

Screening Separators are systems consisting of mechanical screens where mixtures of ore coal

etc are separated according to size

Afterfilters are devices that consist of filter elements which are used for filtering air prior to

releasing it into the environment

Coalescers

Electronic Amplifiers are devices consisting of electronic components with specific circuitry and

controls designed to boost or increase electronic signals while retaining the shape of the

original waveforms

Lenses are optical devices that change the direction of light as it passes through them

Respirators and Facemasks are personal protective devices worn on the face to guard against

airborne contaminants

Strainers are used to remove solids from fluids Strainers are a subgroup of filters that are used

to remove large (visible) particles-- generally 50 microns or larger

Cyclones

Perlite

Earth Diatomaceous earth can be found here

Presses Filter presses can be found here

Media Water purification media can be found here

Sand Filter sand can be found here

General Guide to Electrical Filters

httpwwwticomlitansnoa224asnoa224apdf

Guide to Sediment Filtration

httpcatalogkeystonefiltercomAssetSediment_Filtrationpdf

Manufacturers and Suppliers Air Filters

httpproductsfabtexfilterscomcategoryall-categories

httpbeckerassociatesthomasnetcom

the equipment as well as allowing the fuel to burn more

efficiently The filters are usually designed for a specific

application such as a diesel or aircraft engine or for the

filling of tanks etc and are available in a variety of shapes

and sizes depending on the required application

Hydraulic Filters Hydraulic Filters are devices or systems that remove

contaminants from hydraulic fluids and may include

complete systems or the replacement elements alone Key

specifications include the filter type filter material and the physical dimensions Hydraulic filters are

used primarily for filtering unwanted debris or contaminants from fluids for use in hydraulic cylinders or

with other systems that use hydraulic fluids Depending on the application the filters may require

different materials or types Components often remove particulates

Optical Filters Optical Filters are devices placed in the paths of light sources to

allow only specific wavelengths to pass or be transmitted Key

specifications include the intended application material

wavelength characteristics and physical dimensions Optical

filters are used primarily in photographic applications but can be

used in other scientific or technical work as well Many types of

optical filters can be found including UV infrared or band pass

among several others each having a specific function allowing a

specific wavelength or range of wavelengths to be transmitted

Some are specific to photography and may not be applicable in

technical work

RF and Microwave Filters RF and Microwave Filters are electrical devices that either block or pass specific frequencies Key

specifications include the intended application filter type and frequency characteristics RF and

microwave filters are used primarily to process electronic signals by removing unwanted frequency

components or enhancing others They usually operate at radio frequency ranges (megahertz and

gigahertz) and at microwave frequencies Various types of filters area available including low pass high

pass band pass as well as reject pass each having a specific

wavelength or range of wavelengths that is either blocked or

transmitted

Water Filters Water Filters are devices or systems that remove contaminants from

water and may include complete systems or the replacement

elements alone Key specifications include the intended application

flow rate particulate size and the physical dimensions Water filters

are used primarily in any system that requires the water to be filtered

or cleaned to remove debris and particulates Many applications use

water filters including water parks refrigerators aquariums

wastewater facilities etc The filters are available in various sizes and

types depending on the application

Applications and Industries Filters that process fluids such as air fuel water hydraulic oil etc generally rely on paper foam or

other similar materials whose pore sizes can be controlled to pass only materials below certain sizes

Designs are many and varied including baffled pleated spiral wound finned etc Filters are often

replaceable and are sold as complete assemblies of housings and filtering elements or are available as

elements only Filters tend to be application specific Household water filters are a common

representation of the housingcartridge design Other filtering systems are designed to be cleaned such

as sand filters used for water filtering which are often backflushed to restore capacity

Flow rate and pressure drop are important considerations when selecting fluid filters because any

filtering element in a flow stream will diminish the pressure of an incoming stream In general the more

restrictive the filter is the more it will diminish flow rate and pressure

Air filters are used by HVAC systems spray booths compressors engines electronics enclosures

cleanrooms etc wherever incoming air needs to be cleaned of particulates dust odors microbes and

so on They are used on the discharge side of many industrial processes where process air must be

cleaned before being returned to the environment Air filters are used in compressed air systems often

as parts of assemblies called Filter-Regulator-Lubricators (FRLs) where they filter air used in powering

compressed air devices Respirators and facemasks often use replaceable filter cartridges as personal

protective devices

Water filters are used by waterworks swimming pools households campers etc to remove impurities

prior to drinking bathing and so on They are used in many industrial processes as well to clean cooling

water boiler feed water etc Filtering media can be any of a number of materials ranging from sintered

metal to charcoal Among the materials removed from water (aka the filtrand) biological impurities

fuels various mineralschemicals and sediments are particularly common

Fuel filters are almost invariably of the cartridgereplaceable element type or of the fully disposable

variety They are used on engines fueling equipment oil burners etc to remove particulates and water

from gasoline and fuel oil

Hydraulic filters are used for filtering hydraulic fluids used in fluid power systems They are often

available as spin-on types similar to the designs used for automotive engines Some common

applications of hydraulic filters include control systems for power plants steel mills pulp and paper

mills in addition to their everyday application to hydraulic construction equipment

Although all of the above filters process fluids fluid filters captures the less common forms of fluid

filtration such as foods wines and spirits natural gas automotive oil etc These can be fairly generic

filters such as spin-on engine oil filters or fairly specialized such as the filters used with plating

chemicals

Electronic EMIRFI and RF and Microwave filters work in the electromagnetic spectrum They are used

in military and industrial settings to remove unwanted signals electronic noise etc Some applications

include data acquisition systems variable frequency drives etc

Optical filters are the chiefly used in photography and imaging though they are found in other

applications in searchlights for instance

Considerations Fluid filter buyers can specify housings with filters or the filters alone to fit existing housings Air filters

are available in many stock and common sizes and finding a fit is usually a length x width x height

proposition For air filters that have elements only specifiers can select the filter type be it cartridge

compressed air inline membrane pad panel screen or vacuum Specifiers looking for filters that

include the housings can select theses same choices by leaving off the part that states ldquoelement onlyrdquo

The same selections of housings or only elements apply to water fuel fluid and hydraulic filters

Dimensional selection is not often as forthright for these filters as it is for air filters because often the

filters are held in circular housings or are threaded on requiring additional attributes to describe the fit

Many such filters are manufacturer specific Oil filter manufacturers tend to cover all models of cars on

the other hand

Water filters designed for larger scale filtering beyond the household realm often rely on sand as the

filtering media and have no elements per se These are designed to be backflushed with clean water to

remove the filtrand so that the sand can be reused Often sand filtering can remove particles and

sediment in the 20-30 micron range Carbon filtering is often used to remove odors and taste Reverse

osmosis filtering uses high pressure to force water through membranes where it can desalinate sea

water etc usually relying on some forms of pre-filtering and carbon polishing in addition to the

membrane treatment Reverse osmosis filtering can range from small household units for drinking water

to large scale industrial units that make water for critical processes such as food and beverage

manufacturing

Fluid filters are used for removing tramp oils and metals from metalworking coolants Other fluid filters

are used to remove oil from degreasing fluids Still other fluid filters remove water from natural gas

Hydraulic filters are usually chosen based on pressure capacity with 100 3000 and 6000 psi being

common upper limits They are commonly supplied with SAE port configurations

Important Attributes

Maximum Flowrate Flowrate is typically measured in cubic feetmin (cfm) for air filters and gallonsminute ( gpm) for liquid

filters

Intended Application Selecting the filter application is a good way to find appropriate filters without having to decide whether

it is a fuel filter fluid filter etc that is needed Picking something like diesel and gas engine filters might

return air filters fuel filters and fluid filters however when what you really want is an automotive oil

filter

Filtrate Filtrate describes the media that passes through the filter Picking oil here will produce hydraulic filters

automobile engine filters and the like

Filtrand Filtrand describes the material that the filter takes out of the filtrate Picking oil here will produce water

filters and the like Similarly checking oil as the filtrand and paint as the filtrate will produce filters which

remove oils from paints as may be useful for spray painting

Filter Type For air and other fluid handling filters selecting any of the element only choices will return replacement

filters for existing housings Filter type for electronic EMIRFI and RF and microwave filters can specify

which signals are allowed through (low pass etc) as well as specific filter types such as Butterworth etc

Some similar types can be selected here for optical filters

Filter Media Filter media refers to the filtering agent that the filter uses and not the raw material itself That is if you

are searching for an activated carbon filter cartridge you would find it here whereas if you were looking

to buy activated carbon in bulk form you would search under the media itself ie carbon sand perlite

diatomaceous earth etc

Related Product Categories

DustFumeMist Collectors are mechanical devices that filter dust and contaminants from air

before releasing the cleaned air into the environment

Dust Control Booths are semi-enclosed structures that aid in collecting or filtering dusts or other

contaminants from the air that result from factory or shop operations

Pressure Regulators are mechanical devices that control the pressure of fluid in systems

Regulators are often combined with other components such as filters

Screening Separators are systems consisting of mechanical screens where mixtures of ore coal

etc are separated according to size

Afterfilters are devices that consist of filter elements which are used for filtering air prior to

releasing it into the environment

Coalescers

Electronic Amplifiers are devices consisting of electronic components with specific circuitry and

controls designed to boost or increase electronic signals while retaining the shape of the

original waveforms

Lenses are optical devices that change the direction of light as it passes through them

Respirators and Facemasks are personal protective devices worn on the face to guard against

airborne contaminants

Strainers are used to remove solids from fluids Strainers are a subgroup of filters that are used

to remove large (visible) particles-- generally 50 microns or larger

Cyclones

Perlite

Earth Diatomaceous earth can be found here

Presses Filter presses can be found here

Media Water purification media can be found here

Sand Filter sand can be found here

General Guide to Electrical Filters

httpwwwticomlitansnoa224asnoa224apdf

Guide to Sediment Filtration

httpcatalogkeystonefiltercomAssetSediment_Filtrationpdf

Manufacturers and Suppliers Air Filters

httpproductsfabtexfilterscomcategoryall-categories

httpbeckerassociatesthomasnetcom

Water Filters Water Filters are devices or systems that remove contaminants from

water and may include complete systems or the replacement

elements alone Key specifications include the intended application

flow rate particulate size and the physical dimensions Water filters

are used primarily in any system that requires the water to be filtered

or cleaned to remove debris and particulates Many applications use

water filters including water parks refrigerators aquariums

wastewater facilities etc The filters are available in various sizes and

types depending on the application

Applications and Industries Filters that process fluids such as air fuel water hydraulic oil etc generally rely on paper foam or

other similar materials whose pore sizes can be controlled to pass only materials below certain sizes

Designs are many and varied including baffled pleated spiral wound finned etc Filters are often

replaceable and are sold as complete assemblies of housings and filtering elements or are available as

elements only Filters tend to be application specific Household water filters are a common

representation of the housingcartridge design Other filtering systems are designed to be cleaned such

as sand filters used for water filtering which are often backflushed to restore capacity

Flow rate and pressure drop are important considerations when selecting fluid filters because any

filtering element in a flow stream will diminish the pressure of an incoming stream In general the more

restrictive the filter is the more it will diminish flow rate and pressure

Air filters are used by HVAC systems spray booths compressors engines electronics enclosures

cleanrooms etc wherever incoming air needs to be cleaned of particulates dust odors microbes and

so on They are used on the discharge side of many industrial processes where process air must be

cleaned before being returned to the environment Air filters are used in compressed air systems often

as parts of assemblies called Filter-Regulator-Lubricators (FRLs) where they filter air used in powering

compressed air devices Respirators and facemasks often use replaceable filter cartridges as personal

protective devices

Water filters are used by waterworks swimming pools households campers etc to remove impurities

prior to drinking bathing and so on They are used in many industrial processes as well to clean cooling

water boiler feed water etc Filtering media can be any of a number of materials ranging from sintered

metal to charcoal Among the materials removed from water (aka the filtrand) biological impurities

fuels various mineralschemicals and sediments are particularly common

Fuel filters are almost invariably of the cartridgereplaceable element type or of the fully disposable

variety They are used on engines fueling equipment oil burners etc to remove particulates and water

from gasoline and fuel oil

Hydraulic filters are used for filtering hydraulic fluids used in fluid power systems They are often

available as spin-on types similar to the designs used for automotive engines Some common

applications of hydraulic filters include control systems for power plants steel mills pulp and paper

mills in addition to their everyday application to hydraulic construction equipment

Although all of the above filters process fluids fluid filters captures the less common forms of fluid

filtration such as foods wines and spirits natural gas automotive oil etc These can be fairly generic

filters such as spin-on engine oil filters or fairly specialized such as the filters used with plating

chemicals

Electronic EMIRFI and RF and Microwave filters work in the electromagnetic spectrum They are used

in military and industrial settings to remove unwanted signals electronic noise etc Some applications

include data acquisition systems variable frequency drives etc

Optical filters are the chiefly used in photography and imaging though they are found in other

applications in searchlights for instance

Considerations Fluid filter buyers can specify housings with filters or the filters alone to fit existing housings Air filters

are available in many stock and common sizes and finding a fit is usually a length x width x height

proposition For air filters that have elements only specifiers can select the filter type be it cartridge

compressed air inline membrane pad panel screen or vacuum Specifiers looking for filters that

include the housings can select theses same choices by leaving off the part that states ldquoelement onlyrdquo

The same selections of housings or only elements apply to water fuel fluid and hydraulic filters

Dimensional selection is not often as forthright for these filters as it is for air filters because often the

filters are held in circular housings or are threaded on requiring additional attributes to describe the fit

Many such filters are manufacturer specific Oil filter manufacturers tend to cover all models of cars on

the other hand

Water filters designed for larger scale filtering beyond the household realm often rely on sand as the

filtering media and have no elements per se These are designed to be backflushed with clean water to

remove the filtrand so that the sand can be reused Often sand filtering can remove particles and

sediment in the 20-30 micron range Carbon filtering is often used to remove odors and taste Reverse

osmosis filtering uses high pressure to force water through membranes where it can desalinate sea

water etc usually relying on some forms of pre-filtering and carbon polishing in addition to the

membrane treatment Reverse osmosis filtering can range from small household units for drinking water

to large scale industrial units that make water for critical processes such as food and beverage

manufacturing

Fluid filters are used for removing tramp oils and metals from metalworking coolants Other fluid filters

are used to remove oil from degreasing fluids Still other fluid filters remove water from natural gas

Hydraulic filters are usually chosen based on pressure capacity with 100 3000 and 6000 psi being

common upper limits They are commonly supplied with SAE port configurations

Important Attributes

Maximum Flowrate Flowrate is typically measured in cubic feetmin (cfm) for air filters and gallonsminute ( gpm) for liquid

filters

Intended Application Selecting the filter application is a good way to find appropriate filters without having to decide whether

it is a fuel filter fluid filter etc that is needed Picking something like diesel and gas engine filters might

return air filters fuel filters and fluid filters however when what you really want is an automotive oil

filter

Filtrate Filtrate describes the media that passes through the filter Picking oil here will produce hydraulic filters

automobile engine filters and the like

Filtrand Filtrand describes the material that the filter takes out of the filtrate Picking oil here will produce water

filters and the like Similarly checking oil as the filtrand and paint as the filtrate will produce filters which

remove oils from paints as may be useful for spray painting

Filter Type For air and other fluid handling filters selecting any of the element only choices will return replacement

filters for existing housings Filter type for electronic EMIRFI and RF and microwave filters can specify

which signals are allowed through (low pass etc) as well as specific filter types such as Butterworth etc

Some similar types can be selected here for optical filters

Filter Media Filter media refers to the filtering agent that the filter uses and not the raw material itself That is if you

are searching for an activated carbon filter cartridge you would find it here whereas if you were looking

to buy activated carbon in bulk form you would search under the media itself ie carbon sand perlite

diatomaceous earth etc

Related Product Categories

DustFumeMist Collectors are mechanical devices that filter dust and contaminants from air

before releasing the cleaned air into the environment

Dust Control Booths are semi-enclosed structures that aid in collecting or filtering dusts or other

contaminants from the air that result from factory or shop operations

Pressure Regulators are mechanical devices that control the pressure of fluid in systems

Regulators are often combined with other components such as filters

Screening Separators are systems consisting of mechanical screens where mixtures of ore coal

etc are separated according to size

Afterfilters are devices that consist of filter elements which are used for filtering air prior to

releasing it into the environment

Coalescers

Electronic Amplifiers are devices consisting of electronic components with specific circuitry and

controls designed to boost or increase electronic signals while retaining the shape of the

original waveforms

Lenses are optical devices that change the direction of light as it passes through them

Respirators and Facemasks are personal protective devices worn on the face to guard against

airborne contaminants

Strainers are used to remove solids from fluids Strainers are a subgroup of filters that are used

to remove large (visible) particles-- generally 50 microns or larger

Cyclones

Perlite

Earth Diatomaceous earth can be found here

Presses Filter presses can be found here

Media Water purification media can be found here

Sand Filter sand can be found here

General Guide to Electrical Filters

httpwwwticomlitansnoa224asnoa224apdf

Guide to Sediment Filtration

httpcatalogkeystonefiltercomAssetSediment_Filtrationpdf

Manufacturers and Suppliers Air Filters

httpproductsfabtexfilterscomcategoryall-categories

httpbeckerassociatesthomasnetcom

Fuel filters are almost invariably of the cartridgereplaceable element type or of the fully disposable

variety They are used on engines fueling equipment oil burners etc to remove particulates and water

from gasoline and fuel oil

Hydraulic filters are used for filtering hydraulic fluids used in fluid power systems They are often

available as spin-on types similar to the designs used for automotive engines Some common

applications of hydraulic filters include control systems for power plants steel mills pulp and paper

mills in addition to their everyday application to hydraulic construction equipment

Although all of the above filters process fluids fluid filters captures the less common forms of fluid

filtration such as foods wines and spirits natural gas automotive oil etc These can be fairly generic

filters such as spin-on engine oil filters or fairly specialized such as the filters used with plating

chemicals

Electronic EMIRFI and RF and Microwave filters work in the electromagnetic spectrum They are used

in military and industrial settings to remove unwanted signals electronic noise etc Some applications

include data acquisition systems variable frequency drives etc

Optical filters are the chiefly used in photography and imaging though they are found in other

applications in searchlights for instance

Considerations Fluid filter buyers can specify housings with filters or the filters alone to fit existing housings Air filters

are available in many stock and common sizes and finding a fit is usually a length x width x height

proposition For air filters that have elements only specifiers can select the filter type be it cartridge

compressed air inline membrane pad panel screen or vacuum Specifiers looking for filters that

include the housings can select theses same choices by leaving off the part that states ldquoelement onlyrdquo

The same selections of housings or only elements apply to water fuel fluid and hydraulic filters

Dimensional selection is not often as forthright for these filters as it is for air filters because often the

filters are held in circular housings or are threaded on requiring additional attributes to describe the fit

Many such filters are manufacturer specific Oil filter manufacturers tend to cover all models of cars on

the other hand

Water filters designed for larger scale filtering beyond the household realm often rely on sand as the

filtering media and have no elements per se These are designed to be backflushed with clean water to

remove the filtrand so that the sand can be reused Often sand filtering can remove particles and

sediment in the 20-30 micron range Carbon filtering is often used to remove odors and taste Reverse

osmosis filtering uses high pressure to force water through membranes where it can desalinate sea

water etc usually relying on some forms of pre-filtering and carbon polishing in addition to the

membrane treatment Reverse osmosis filtering can range from small household units for drinking water

to large scale industrial units that make water for critical processes such as food and beverage

manufacturing

Fluid filters are used for removing tramp oils and metals from metalworking coolants Other fluid filters

are used to remove oil from degreasing fluids Still other fluid filters remove water from natural gas

Hydraulic filters are usually chosen based on pressure capacity with 100 3000 and 6000 psi being

common upper limits They are commonly supplied with SAE port configurations

Important Attributes

Maximum Flowrate Flowrate is typically measured in cubic feetmin (cfm) for air filters and gallonsminute ( gpm) for liquid

filters

Intended Application Selecting the filter application is a good way to find appropriate filters without having to decide whether

it is a fuel filter fluid filter etc that is needed Picking something like diesel and gas engine filters might

return air filters fuel filters and fluid filters however when what you really want is an automotive oil

filter

Filtrate Filtrate describes the media that passes through the filter Picking oil here will produce hydraulic filters

automobile engine filters and the like

Filtrand Filtrand describes the material that the filter takes out of the filtrate Picking oil here will produce water

filters and the like Similarly checking oil as the filtrand and paint as the filtrate will produce filters which

remove oils from paints as may be useful for spray painting

Filter Type For air and other fluid handling filters selecting any of the element only choices will return replacement

filters for existing housings Filter type for electronic EMIRFI and RF and microwave filters can specify

which signals are allowed through (low pass etc) as well as specific filter types such as Butterworth etc

Some similar types can be selected here for optical filters

Filter Media Filter media refers to the filtering agent that the filter uses and not the raw material itself That is if you

are searching for an activated carbon filter cartridge you would find it here whereas if you were looking

to buy activated carbon in bulk form you would search under the media itself ie carbon sand perlite

diatomaceous earth etc

Related Product Categories

DustFumeMist Collectors are mechanical devices that filter dust and contaminants from air

before releasing the cleaned air into the environment

Dust Control Booths are semi-enclosed structures that aid in collecting or filtering dusts or other

contaminants from the air that result from factory or shop operations

Pressure Regulators are mechanical devices that control the pressure of fluid in systems

Regulators are often combined with other components such as filters

Screening Separators are systems consisting of mechanical screens where mixtures of ore coal

etc are separated according to size

Afterfilters are devices that consist of filter elements which are used for filtering air prior to

releasing it into the environment

Coalescers

Electronic Amplifiers are devices consisting of electronic components with specific circuitry and

controls designed to boost or increase electronic signals while retaining the shape of the

original waveforms

Lenses are optical devices that change the direction of light as it passes through them

Respirators and Facemasks are personal protective devices worn on the face to guard against

airborne contaminants

Strainers are used to remove solids from fluids Strainers are a subgroup of filters that are used

to remove large (visible) particles-- generally 50 microns or larger

Cyclones

Perlite

Earth Diatomaceous earth can be found here

Presses Filter presses can be found here

Media Water purification media can be found here

Sand Filter sand can be found here

General Guide to Electrical Filters

httpwwwticomlitansnoa224asnoa224apdf

Guide to Sediment Filtration

httpcatalogkeystonefiltercomAssetSediment_Filtrationpdf

Manufacturers and Suppliers Air Filters

httpproductsfabtexfilterscomcategoryall-categories

httpbeckerassociatesthomasnetcom

Fluid filters are used for removing tramp oils and metals from metalworking coolants Other fluid filters

are used to remove oil from degreasing fluids Still other fluid filters remove water from natural gas

Hydraulic filters are usually chosen based on pressure capacity with 100 3000 and 6000 psi being

common upper limits They are commonly supplied with SAE port configurations

Important Attributes

Maximum Flowrate Flowrate is typically measured in cubic feetmin (cfm) for air filters and gallonsminute ( gpm) for liquid

filters

Intended Application Selecting the filter application is a good way to find appropriate filters without having to decide whether

it is a fuel filter fluid filter etc that is needed Picking something like diesel and gas engine filters might

return air filters fuel filters and fluid filters however when what you really want is an automotive oil

filter

Filtrate Filtrate describes the media that passes through the filter Picking oil here will produce hydraulic filters

automobile engine filters and the like

Filtrand Filtrand describes the material that the filter takes out of the filtrate Picking oil here will produce water

filters and the like Similarly checking oil as the filtrand and paint as the filtrate will produce filters which

remove oils from paints as may be useful for spray painting

Filter Type For air and other fluid handling filters selecting any of the element only choices will return replacement

filters for existing housings Filter type for electronic EMIRFI and RF and microwave filters can specify

which signals are allowed through (low pass etc) as well as specific filter types such as Butterworth etc

Some similar types can be selected here for optical filters

Filter Media Filter media refers to the filtering agent that the filter uses and not the raw material itself That is if you

are searching for an activated carbon filter cartridge you would find it here whereas if you were looking

to buy activated carbon in bulk form you would search under the media itself ie carbon sand perlite

diatomaceous earth etc

Related Product Categories

DustFumeMist Collectors are mechanical devices that filter dust and contaminants from air

before releasing the cleaned air into the environment

Dust Control Booths are semi-enclosed structures that aid in collecting or filtering dusts or other

contaminants from the air that result from factory or shop operations

Pressure Regulators are mechanical devices that control the pressure of fluid in systems

Regulators are often combined with other components such as filters

Screening Separators are systems consisting of mechanical screens where mixtures of ore coal

etc are separated according to size

Afterfilters are devices that consist of filter elements which are used for filtering air prior to

releasing it into the environment

Coalescers

Electronic Amplifiers are devices consisting of electronic components with specific circuitry and

controls designed to boost or increase electronic signals while retaining the shape of the

original waveforms

Lenses are optical devices that change the direction of light as it passes through them

Respirators and Facemasks are personal protective devices worn on the face to guard against

airborne contaminants

Strainers are used to remove solids from fluids Strainers are a subgroup of filters that are used

to remove large (visible) particles-- generally 50 microns or larger

Cyclones

Perlite

Earth Diatomaceous earth can be found here

Presses Filter presses can be found here

Media Water purification media can be found here

Sand Filter sand can be found here

General Guide to Electrical Filters

httpwwwticomlitansnoa224asnoa224apdf

Guide to Sediment Filtration

httpcatalogkeystonefiltercomAssetSediment_Filtrationpdf

Manufacturers and Suppliers Air Filters

httpproductsfabtexfilterscomcategoryall-categories

httpbeckerassociatesthomasnetcom

Related Product Categories

DustFumeMist Collectors are mechanical devices that filter dust and contaminants from air

before releasing the cleaned air into the environment

Dust Control Booths are semi-enclosed structures that aid in collecting or filtering dusts or other

contaminants from the air that result from factory or shop operations

Pressure Regulators are mechanical devices that control the pressure of fluid in systems

Regulators are often combined with other components such as filters

Screening Separators are systems consisting of mechanical screens where mixtures of ore coal

etc are separated according to size

Afterfilters are devices that consist of filter elements which are used for filtering air prior to

releasing it into the environment

Coalescers

Electronic Amplifiers are devices consisting of electronic components with specific circuitry and

controls designed to boost or increase electronic signals while retaining the shape of the

original waveforms

Lenses are optical devices that change the direction of light as it passes through them

Respirators and Facemasks are personal protective devices worn on the face to guard against

airborne contaminants

Strainers are used to remove solids from fluids Strainers are a subgroup of filters that are used

to remove large (visible) particles-- generally 50 microns or larger

Cyclones

Perlite

Earth Diatomaceous earth can be found here

Presses Filter presses can be found here

Media Water purification media can be found here

Sand Filter sand can be found here

General Guide to Electrical Filters

httpwwwticomlitansnoa224asnoa224apdf

Guide to Sediment Filtration

httpcatalogkeystonefiltercomAssetSediment_Filtrationpdf

Manufacturers and Suppliers Air Filters

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httpportablecleanroomscleanroomdepotcomcategoryceiling-and-hepa-components

httpapcfiltersthomasnet-navigatorcomitemcapabilitiescustom-oem-air-filtersitem-1001

httpfumeextractionfumexinccomcompareall-categoriesindustrial-air-filtration-systems

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httphepaairflotekcom

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httpcatalogdynacomonlinecomcategoryaftermarket-filters-bags-cartridges-parts

httpfiltersdynamicfiltrationca

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Water Filters

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replacement-parts

httpwatermakersreverse-osmosisnet

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httpcatalogreskemcom

httppeppep-plasticcomcategoryineered-products-online-store-strainers-filtrati-2

Fuel Filters

httpcatalogrcitechnologiescomcategorybio-mag

httpproductsfiltrationcorpcom

httpcatalogindustrialspeccomviewitemsfilters-plastic-non-serviceablefs

httpbeckerassociatesthomasnetcomcategoryaviation-division

Electronic Filters

httpcatalogrkecomcategorytransient-voltage-filters-suppressors-

EMIRFI Filters

httpcatalogpowertechcontrolscomcategoryes-manufacturers-schaffner-emc-pcb-emc-emi-

filtersampbc=1007C1929

httpemifilterscaptorcorpcom

RF and Microwave Filters

httpwwwttecomproductsfiltersaspx

httpwwwklmicrowavecomindexphp

Optical Filters

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httpopticssterlingprecisioncom

httpsearchlightspeakbeamcomcategorysearchlight-filters

httpflatglassproductshowardglasscomviewitemsflat-glass-products-fabricationhoya-filter-glass

httpcatalogoxleygroupcomviewitemsoptical-filtersoptical-filterampbc=100|3001213