Industrial Filtration - Balston | Parker
Industrial filtration protects equipment, products and people by removing contaminants from liquids, gases and air. Clean process fluids extend pump and valve life, improve product quality and help plants meet envi...
Categories from Balston (5)
FRL's
FRLs (filter, regulator and lubricator units) condition compressed air at the point of use. They remove contaminants, set the correct pressure and add lubrication for pneumatic tools and components.
FRL Options
- Combination FRL units – three functions in one assembly
- Filter/regulators – space-saving two-in-one
- Modular units – build custom air prep assemblies
- Accessories – gauges, brackets, shutoff valves and drains
- Metal and polycarbonate bowls – match pressure and environment
Choosing an FRL
Size the unit for peak air flow and select filter micron and regulator range. Skip the lubricator if components are pre-lubricated or air must be oil-free. Metal bowls are required in some environments.
Centro carries FRL units and parts for compressed air systems.
Related categories: Compressed Air | Filter Vessel Assemblies | Dryers | Drains
Filter Elements
Compressed air filter elements are the replaceable parts that do the filtering inside compressed air housings. Regular replacement keeps air quality high and pressure drop low.
Element Types
- Particulate elements – remove solids
- Coalescing elements – remove oil and water aerosols
- Activated carbon elements – remove oil vapor
- OEM interchangeable elements – fit major brands
Replacement Tips
Replace elements annually or when pressure drop rises. Have the housing brand and model ready to find the right element.
Centro supplies compressed air filter elements.
Related categories: Compressed Air | Compressor Parts | Parts and Accessories
Parts and Accessories
Compressed air parts and accessories keep air systems running efficiently. Replacement elements, gauges, fittings and service kits maintain filters, dryers and drains.
Parts & Accessories
- Filter elements – replacement cartridges for housings
- Service kits – seals, valves and drains
- Gauges and indicators – pressure and differential pressure
- Fittings and couplers – connections and quick disconnects
- Hose and reels – point-of-use distribution
Maintenance Tips
Replace filter elements at least annually and check drains regularly. Fixing leaks in fittings and hoses cuts compressor energy costs.
Centro supplies compressed air parts and accessories.
Related categories: Compressed Air | Filter Elements | Drains
Dryers
Compressed air dryers remove water vapor to prevent condensation, corrosion and freezing in air lines. Dry air protects tools, instruments and products, especially in painting, food and outdoor applications.
Dryer Types
- Refrigerated dryers – economical dew points around 35-39°F
- Desiccant air dryers – dew points to -40°F or lower
- Membrane dryers – point-of-use drying without power
- Heatless and heated regeneration – desiccant efficiency options
Choosing a Dryer
Select based on required pressure dew point, flow, inlet temperature and ambient conditions. Pre-filters protect desiccant dryers from oil. Size for summer conditions to avoid wet air.
Centro supplies compressed air dryers and replacement desiccant.
Shop by type: Desiccant Air Dryers
Related categories: Compressed Air | Drains | FRL's
Drains
Compressed air drains remove the condensate that collects in filters, dryers, receivers and drip legs. Removing water automatically protects equipment and keeps air quality up.
Drain Types
- Timer drains – simple, programmable discharge
- Zero air-loss drains – discharge water only, saving energy
- Float drains – mechanical, no power needed
- Internal filter bowl drains – automatic draining at filters
Choosing a Drain
Consider the condensate volume, pressure, power availability and oil content. Zero-loss drains pay back quickly by stopping wasted air. Route condensate to an oil-water separator before disposal.
Centro carries compressed air drains for filters, receivers and dryers.
Related categories: Compressed Air | Dryers | Parts and Accessories
Filter
Filter
1,448 items
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The Parker Balston 050-03-CQ is a Particulate Filter Element (050 Series). Microfibre particulate cartridge rated at 10µm for removing fine solid particles from compressed air and gas lines. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$210.99
Available for Purchase
Subject to factory lead times
The Parker Balston 050-05-AAQ is a Absolute Filter Element (050 Series). Microfibre particulate cartridge rated at 0.3µm with 99.99999+% efficiency at 0.01 micron. The highest-efficiency grade for critical analytical and pharmaceutical applications. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$491.99
Available for Purchase
Subject to factory lead times
The Parker Balston 050-05-AH is a High-Temperature Filter Element (050 Series). Quartz-construction filter element rated at 0.9µm for high-temperature applications up to 1000°F (538°C). Used in oxygen service and critical high-purity gas filtration. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$294.99
Available for Purchase
Subject to factory lead times
The Parker Balston 050-05-AQ is a Ultra-High-Efficiency Particulate Filter Element (050 Series). Microfibre particulate cartridge rated at 0.9µm with 99.9999% efficiency at 0.01 micron for analytical instrument protection and sterile air applications. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$294.99
Available for Purchase
Subject to factory lead times
The Parker Balston 050-05-AS is a Filter Element (050 Series). Replacement microfibre filter element for Balston 050 series filter housings. Maintains system efficiency when replaced at recommended intervals. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$294.99
Available for Purchase
Subject to factory lead times
The Parker Balston 050-05-BH is a High-Temperature Filter Element (050 Series). Quartz-construction filter element rated at 2µm with temperature resistance to 1000°F (538°C) for critical high-temperature and oxygen service applications. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$210.99
Available for Purchase
Subject to factory lead times
The Parker Balston 050-05-BQ is a High-Efficiency Particulate Filter Element (050 Series). Microfibre particulate cartridge rated at 2µm with 99.99% efficiency at 0.01 micron for critical air purity applications. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$210.99
Available for Purchase
Subject to factory lead times
The Parker Balston 050-05-BX is a High-Efficiency Coalescing Filter Element (050 Series). Microfibre coalescing cartridge rated at 2µm with 99.99% efficiency at 0.01 micron. Removes oil, water, and fine particulate from compressed air for instrument-quality air supply. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$307.99
Available for Purchase
Subject to factory lead times
The Parker Balston 050-05-CH is a High-Temperature Filter Element (050 Series). Quartz-construction filter element rated at 10µm with temperature resistance to 1000°F (538°C) for oxygen-compatible and high-temperature service. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$210.99
Available for Purchase
Subject to factory lead times
The Parker Balston 050-05-CQ is a Particulate Filter Element (050 Series). Microfibre particulate cartridge rated at 10µm for removing fine solid particles from compressed air and gas lines. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$210.99
Available for Purchase
Subject to factory lead times
The Parker Balston 050-05-CX is a Coalescing Filter Element (050 Series). Microfibre coalescing cartridge rated at 10µm. Removes oil mist, water droplets, and particles from compressed air and gas lines. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$307.99
Available for Purchase
Subject to factory lead times
The Parker Balston 050-05-DH is a High-Temperature Filter Element (050 Series). Quartz-construction filter element rated at 25µm with temperature resistance to 1000°F (538°C). Recommended for oxygen service and high-temperature gas applications. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$210.99
Available for Purchase
Subject to factory lead times
The Parker Balston 050-05-DQ is a Particulate Filter Element (050 Series). Microfibre particulate cartridge rated at 25µm for removing dry solid particles from compressed air and gas. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$210.99
Available for Purchase
Subject to factory lead times
The Parker Balston 050-05-DX is a Coalescing Filter Element (050 Series). Microfibre coalescing cartridge rated at 25µm that removes suspended liquids and solid particles from compressed air and gas. Used as first-stage filtration to protect downstream equipment and finer filters. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$307.99
Available for Purchase
Subject to factory lead times
The Parker Balston 050-07-BH is a High-Temperature Filter Element (050 Series). Quartz-construction filter element rated at 2µm with temperature resistance to 1000°F (538°C) for critical high-temperature and oxygen service applications. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$210.99
Available for Purchase
Subject to factory lead times
The Parker Balston 050-07-BQ is a High-Efficiency Particulate Filter Element (050 Series). Microfibre particulate cartridge rated at 2µm with 99.99% efficiency at 0.01 micron for critical air purity applications. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$208.99
Available for Purchase
Subject to factory lead times
The Parker Balston 050-07-BX is a High-Efficiency Coalescing Filter Element (050 Series). Microfibre coalescing cartridge rated at 2µm with 99.99% efficiency at 0.01 micron. Removes oil, water, and fine particulate from compressed air for instrument-quality air supply. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$368.99
Available for Purchase
Subject to factory lead times
The Parker Balston 050-07-DH is a High-Temperature Filter Element (050 Series). Quartz-construction filter element rated at 25µm with temperature resistance to 1000°F (538°C). Recommended for oxygen service and high-temperature gas applications. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$210.99
Available for Purchase
Subject to factory lead times
The Parker Balston 050-07-DQ is a Particulate Filter Element (050 Series). Microfibre particulate cartridge rated at 25µm for removing dry solid particles from compressed air and gas. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$208.99
Available for Purchase
Subject to factory lead times
The Parker Balston 050-11-00M is a Sintered Stainless Steel Filter Element (050 Series). 316 stainless steel sintered metal element rated at 100µm nominal. Designed for heavy solids loading and use as a prefilter to fine microfibre final filters. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$98.20
Available for Purchase
Subject to factory lead times
The Parker Balston 050-11-05M is a Sintered Stainless Steel Filter Element (050 Series). 316 stainless steel sintered metal element rated at 5µm nominal. Designed for heavy solids loading and use as a prefilter to fine microfibre final filters. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$98.20
Available for Purchase
Subject to factory lead times
The Parker Balston 050-11-10M is a Sintered Stainless Steel Filter Element (050 Series). 316 stainless steel sintered metal element rated at 10µm nominal. Designed for heavy solids loading and use as a prefilter to fine microfibre final filters. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$98.20
Available for Purchase
Subject to factory lead times
The Parker Balston 050-11-20M is a Sintered Stainless Steel Filter Element (050 Series). 316 stainless steel sintered metal element rated at 20µm nominal. Designed for heavy solids loading and use as a prefilter to fine microfibre final filters. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$98.20
Available for Purchase
Subject to factory lead times
The Parker Balston 050-11-40M is a Sintered Stainless Steel Filter Element (050 Series). 316 stainless steel sintered metal element rated at 40µm nominal. Designed for heavy solids loading and use as a prefilter to fine microfibre final filters. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$98.20
Available for Purchase
Subject to factory lead times
The Parker Balston 050-03-CQ is a Particulate Filter Element (050 Series). Microfibre particulate cartridge rated at 10µm for removing fine solid particles from compressed air and gas lines. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$210.99
Available for Purchase
Subject to factory lead times
The Parker Balston 050-05-AAQ is a Absolute Filter Element (050 Series). Microfibre particulate cartridge rated at 0.3µm with 99.99999+% efficiency at 0.01 micron. The highest-efficiency grade for critical analytical and pharmaceutical applications. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$491.99
Available for Purchase
Subject to factory lead times
The Parker Balston 050-05-AH is a High-Temperature Filter Element (050 Series). Quartz-construction filter element rated at 0.9µm for high-temperature applications up to 1000°F (538°C). Used in oxygen service and critical high-purity gas filtration. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$294.99
Available for Purchase
Subject to factory lead times
The Parker Balston 050-05-AQ is a Ultra-High-Efficiency Particulate Filter Element (050 Series). Microfibre particulate cartridge rated at 0.9µm with 99.9999% efficiency at 0.01 micron for analytical instrument protection and sterile air applications. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$294.99
Available for Purchase
Subject to factory lead times
The Parker Balston 050-05-AS is a Filter Element (050 Series). Replacement microfibre filter element for Balston 050 series filter housings. Maintains system efficiency when replaced at recommended intervals. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$294.99
Available for Purchase
Subject to factory lead times
The Parker Balston 050-05-BH is a High-Temperature Filter Element (050 Series). Quartz-construction filter element rated at 2µm with temperature resistance to 1000°F (538°C) for critical high-temperature and oxygen service applications. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$210.99
Available for Purchase
Subject to factory lead times
The Parker Balston 050-05-BQ is a High-Efficiency Particulate Filter Element (050 Series). Microfibre particulate cartridge rated at 2µm with 99.99% efficiency at 0.01 micron for critical air purity applications. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$210.99
Available for Purchase
Subject to factory lead times
The Parker Balston 050-05-BX is a High-Efficiency Coalescing Filter Element (050 Series). Microfibre coalescing cartridge rated at 2µm with 99.99% efficiency at 0.01 micron. Removes oil, water, and fine particulate from compressed air for instrument-quality air supply. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$307.99
Available for Purchase
Subject to factory lead times
The Parker Balston 050-05-CH is a High-Temperature Filter Element (050 Series). Quartz-construction filter element rated at 10µm with temperature resistance to 1000°F (538°C) for oxygen-compatible and high-temperature service. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$210.99
Available for Purchase
Subject to factory lead times
The Parker Balston 050-05-CQ is a Particulate Filter Element (050 Series). Microfibre particulate cartridge rated at 10µm for removing fine solid particles from compressed air and gas lines. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$210.99
Available for Purchase
Subject to factory lead times
The Parker Balston 050-05-CX is a Coalescing Filter Element (050 Series). Microfibre coalescing cartridge rated at 10µm. Removes oil mist, water droplets, and particles from compressed air and gas lines. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$307.99
Available for Purchase
Subject to factory lead times
The Parker Balston 050-05-DH is a High-Temperature Filter Element (050 Series). Quartz-construction filter element rated at 25µm with temperature resistance to 1000°F (538°C). Recommended for oxygen service and high-temperature gas applications. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$210.99
Available for Purchase
Subject to factory lead times
The Parker Balston 050-05-DQ is a Particulate Filter Element (050 Series). Microfibre particulate cartridge rated at 25µm for removing dry solid particles from compressed air and gas. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$210.99
Available for Purchase
Subject to factory lead times
The Parker Balston 050-05-DX is a Coalescing Filter Element (050 Series). Microfibre coalescing cartridge rated at 25µm that removes suspended liquids and solid particles from compressed air and gas. Used as first-stage filtration to protect downstream equipment and finer filters. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$307.99
Available for Purchase
Subject to factory lead times
The Parker Balston 050-07-BH is a High-Temperature Filter Element (050 Series). Quartz-construction filter element rated at 2µm with temperature resistance to 1000°F (538°C) for critical high-temperature and oxygen service applications. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$210.99
Available for Purchase
Subject to factory lead times
The Parker Balston 050-07-BQ is a High-Efficiency Particulate Filter Element (050 Series). Microfibre particulate cartridge rated at 2µm with 99.99% efficiency at 0.01 micron for critical air purity applications. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$208.99
Available for Purchase
Subject to factory lead times
The Parker Balston 050-07-BX is a High-Efficiency Coalescing Filter Element (050 Series). Microfibre coalescing cartridge rated at 2µm with 99.99% efficiency at 0.01 micron. Removes oil, water, and fine particulate from compressed air for instrument-quality air supply. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$368.99
Available for Purchase
Subject to factory lead times
The Parker Balston 050-07-DH is a High-Temperature Filter Element (050 Series). Quartz-construction filter element rated at 25µm with temperature resistance to 1000°F (538°C). Recommended for oxygen service and high-temperature gas applications. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$210.99
Available for Purchase
Subject to factory lead times
The Parker Balston 050-07-DQ is a Particulate Filter Element (050 Series). Microfibre particulate cartridge rated at 25µm for removing dry solid particles from compressed air and gas. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$208.99
Available for Purchase
Subject to factory lead times
The Parker Balston 050-11-00M is a Sintered Stainless Steel Filter Element (050 Series). 316 stainless steel sintered metal element rated at 100µm nominal. Designed for heavy solids loading and use as a prefilter to fine microfibre final filters. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$98.20
Available for Purchase
Subject to factory lead times
The Parker Balston 050-11-05M is a Sintered Stainless Steel Filter Element (050 Series). 316 stainless steel sintered metal element rated at 5µm nominal. Designed for heavy solids loading and use as a prefilter to fine microfibre final filters. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$98.20
Available for Purchase
Subject to factory lead times
The Parker Balston 050-11-10M is a Sintered Stainless Steel Filter Element (050 Series). 316 stainless steel sintered metal element rated at 10µm nominal. Designed for heavy solids loading and use as a prefilter to fine microfibre final filters. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$98.20
Available for Purchase
Subject to factory lead times
The Parker Balston 050-11-20M is a Sintered Stainless Steel Filter Element (050 Series). 316 stainless steel sintered metal element rated at 20µm nominal. Designed for heavy solids loading and use as a prefilter to fine microfibre final filters. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$98.20
Available for Purchase
Subject to factory lead times
The Parker Balston 050-11-40M is a Sintered Stainless Steel Filter Element (050 Series). 316 stainless steel sintered metal element rated at 40µm nominal. Designed for heavy solids loading and use as a prefilter to fine microfibre final filters. Parker Balston is the recognized leader in compressed air and gas filtration technology, with products used across laboratory, pharmaceutical, semiconductor, and industrial manufacturing applications.
$98.20
Available for Purchase
Subject to factory lead times
FAQS
- Manufacturing plants use a variety of filtration systems depending on the media being filtered and the contaminants being removed. Liquid filtration systems — including bag filters, cartridge filters, and automatic self-cleaning strainers — remove particulates from process water, chemicals, coatings, and other fluids to protect equipment and maintain product quality. Gas filtration and separation systems remove particulates, oil aerosols, water vapor, and other contaminants from compressed air and process gas streams to protect pneumatic equipment, instrumentation, and downstream products. Strainers (Y-strainers and basket strainers) are installed in pipelines to catch large debris that could damage pumps, valves, and control equipment. Dust filtration systems — including dust collectors with cartridge or bag media — capture airborne particulates generated by grinding, sanding, cutting, conveying, and material handling operations to protect workers and meet OSHA air quality standards. Filter housings hold the filter elements and provide the pressure containment needed for the application's flow rate and operating conditions.
- Bag filters and cartridge filters are both used for liquid filtration, but they differ in design, capacity, and application fit. A bag filter is a flexible fabric or felt pouch that sits inside a filter housing — liquid flows from outside the bag through the media to the inside, trapping particles on the outer surface and within the media. Bag filters handle high flow rates, are cost-effective per unit of filtration area, and are easy to change. They are the standard choice for applications with moderate to heavy particle loads where micron ratings of 1 to 200 microns are sufficient — such as water treatment, chemical processing, paints, and food and beverage production. A cartridge filter is a rigid or semi-rigid cylindrical element (pleated, wound, or melt-blown media) that typically provides finer filtration and higher efficiency than bag filters, with ratings available down to sub-micron levels. Cartridges offer more surface area in a smaller footprint, making them ideal for applications requiring tight particle control, lower volume flows, or polishing filtration after a coarser first-stage filter.
- Filter media material selection depends on the fluid chemistry, temperature, particle characteristics, and regulatory requirements. Polypropylene is the most widely used industrial filter media — it offers broad chemical compatibility (resistant to most acids, bases, and solvents), is FDA compliant for food and beverage applications, and is cost-effective. It is available in melt-blown, spun-bonded, and pleated configurations. Polyester provides higher temperature resistance than polypropylene (up to approximately 300°F) and excellent mechanical strength, making it well suited for higher-temperature liquid applications. Nylon (polyamide) offers good chemical resistance and is commonly used in monofilament woven mesh bag filters for applications requiring precise pore-size surface filtration and bag reusability. Stainless steel mesh and sintered metal media are specified for high-temperature, high-pressure, and aggressive chemical applications where polymer media would degrade. Nomex is used in high-temperature applications such as hot oil filtration and dust collection at elevated temperatures. PTFE media provides universal chemical resistance for the most aggressive acids and solvents. Always verify the media material's compatibility with your specific fluid and operating temperature.
- A filter housing is the pressure vessel that contains the filter element (bag or cartridge) and provides the connections for inlet and outlet piping. The housing seals the process fluid inside, directs flow through the filter media, and allows operators to access the element for replacement. Choosing the right housing involves several factors: the number and size of filter elements it holds (which determines flow capacity), the pressure rating (must exceed the maximum system pressure plus a safety margin), the material of construction (carbon steel for general industrial service, stainless steel 304 or 316 for corrosive fluids, food-grade, or pharmaceutical applications), the connection type and size (NPT threaded, flanged, or sanitary tri-clamp), and the element type it accepts (standard bag sizes #1 through #4, or specific cartridge lengths of 10, 20, 30, or 40 inches). Single-bag housings are the most common for moderate flow rates, while multi-bag housings handle higher flows. Multi-cartridge housings hold several cartridges in parallel for high-volume, fine-filtration applications. Always size the housing to handle peak flow without exceeding the recommended differential pressure.
- An automatic self-cleaning filter continuously removes captured contaminants from its filter element without shutting down the flow or requiring manual intervention. When the differential pressure across the element reaches a setpoint (indicating the element is loaded with contaminants), the system automatically initiates a backwash, scraper, or suction-scanning cycle that cleans the element and discharges the collected debris to drain. The filtered process flow continues uninterrupted during cleaning. Automatic self-cleaning filters are the right choice when the contaminant load is heavy and continuous — meaning manual filter bag or cartridge changes would be required so frequently that labor cost, downtime, and waste disposal become impractical. Common applications include cooling water systems, river or well water intake protection, wastewater reuse, industrial process water loops, and any high-volume, continuous-flow application where filter element changes multiple times per day would be operationally burdensome. The higher upfront cost of an automatic filter is offset by dramatically reduced labor, filter media consumption, and downtime compared to manually changed bag or cartridge systems in heavy-duty service.