Industrial Filtration - Solberg Manufacturing
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...
Filter housings hold bag and cartridge filter elements under pressure, sealing them so nothing bypasses the media. A well-built housing makes element changes quick and safe, and helps filters reach their rated efficiency.
Housing Types
- Bag filter housings – single and multi-bag vessels
- Cartridge filter housings – single and multi-round designs
- Plastic housings – polypropylene and PVDF for chemicals and water
- Stainless steel housings – high pressure, temperature and sanitary use
- Duplex housings – switch filters without stopping flow
Choosing a Housing
Size the housing to your flow rate and target change-out interval. Larger or multi-element housings last longer between changes. Confirm pressure rating, materials, seals and connections. Swing-bolt and quick-open closures reduce maintenance time.
Centro supplies filter housings and matching elements for liquid filtration.
Related categories: Industrial Filtration | Liquid Filtration | Filter Press | Automatic Cleaning | Specialty Filters
Dust filtration cartridges are pleated filter elements used in cartridge-style dust collectors. Their large media area captures fine dust efficiently in a compact footprint.
Cartridge Options
- Cellulose blend media – economical general-purpose filtration
- Spunbond polyester – moisture resistance and easy pulse cleaning
- Nanofiber media – high efficiency for fine dust
- PTFE membrane cartridges – sticky or very fine particulate
- Flame-retardant media – welding and hot sparks
Choosing Replacement Cartridges
Match cartridge dimensions, end cap style and gasket to your collector. Choose media based on dust type, moisture and efficiency requirements. Replace all cartridges at the same time for balanced airflow.
Centro supplies replacement dust collector cartridges for many collector brands.
Related categories: Dust Filtration | Bags and Cages | Collectors | Vents | Ducting
We carry a wide range of mechanical cleansing products to suit industrial or commercial needs. Mechanical cleaning uses physical force to remove dirt, debris, and other contaminants from surfaces. This can be done using various methods, including backwash cleaning and mechanical self-cleaning. Backwash cleaning is a type of mechanical cleansing that uses high-pressure water to remove contaminants from surfaces. This method is often used to clean industrial equipment and machinery. Mechanical self-cleaning refers to using physical tools and devices to remove contaminants from surfaces. This includes brushes, scrapers, and high-pressure air jets. Our selection of mechanical cleansing products is available online, making it easy to find the right product for your needs.
Shop by type: Valves | Self-Cleaning | Backwash | Sand Filter | Multi-Media | Carbon
Related categories: Industrial Filtration | Gas Filtration and Separation | Liquid Filtration | Dust Filtration | Filter Housings
Every time a pneumatic valve or cylinder exhausts, it releases a sharp blast of air that can easily exceed safe noise limits on a busy plant floor. Mufflers and silencers slow and diffuse that exhaust, bringing noise down to a comfortable level while keeping oil mist and debris out of the workspace.
Common Options
- Sintered bronze mufflers – compact, durable and the go-to choice for valve exhaust ports
- Plastic and polyethylene silencers – lightweight and economical with high noise reduction
- Stainless steel silencers – for washdown, food processing and corrosive areas
- Reclassifier and filter silencers – capture oil mist on lubricated air systems
- High-flow exhaust silencers – for large valves, blow-off and dryer purge exhaust
Sizing Tips
Match the muffler's thread to the exhaust port and check its flow rating against your valve's Cv. An undersized silencer creates back pressure that slows cylinder speed. In dirty or oily environments, choose a design that can be cleaned or replaced easily, since a clogged muffler is a common cause of sluggish actuators.
Centro can help you match mufflers to your valves and exhaust flow so you get quieter operation without giving up cycle time.
Related categories: Gas Filtration and Separation | Oil/Mist Coalescing | Compressed Air | Gas Filtering
Compressed air often carries more oil and water than it looks. Oil mist coalescing filters capture fine aerosols that standard particulate filters let through. Tiny droplets collide inside the filter media, merge into larger drops and drain away, leaving clean, dry air for instruments, paint lines, packaging and pneumatic controls.
What's Available
- General purpose coalescers – remove oil and water aerosols down to about 1 micron
- High-efficiency coalescers – sub-micron removal for instrument air and sensitive processes
- Oil vapor and carbon filters – strip odor and vapor after coalescing
- Replacement elements – drop-in cartridges for popular housing brands
- Housings with auto drains – discharge collected liquid without operator attention
Getting the Best Results
Install a particulate pre-filter upstream so the coalescer isn't loaded with dirt, and size the filter for your actual flow, not the pipe size. A differential pressure gauge shows when it's time to change the element. Most elements should be replaced at least once a year, even if pressure drop looks acceptable.
Centro carries coalescing filters and elements for compressed air and process gas, and our team can help you choose the right filter grades for your air quality class.
Related categories: Gas Filtration and Separation | Compressed Air | Mufflers & Silencers | Gas Filtering
Not every filtration job fits neatly into a standard catalog. Specialty filters cover applications with unusual temperatures, chemistries, sizes or regulatory requirements. Examples include high-temperature gas streams, aggressive solvents, and replacement elements for older or uncommon housings.
Typical Specialty Applications
- High-temperature filtration using metal, ceramic or glass fiber media
- Chemical-resistant filters with PTFE, PVDF or polypropylene construction
- Custom-size elements built to match existing housings and dimensions
- Sanitary and pharmaceutical filters with validated, FDA-compliant materials
- Application-specific media for oil removal, adsorption or fine polishing
What to Have Ready
Quoting a specialty filter goes faster when you know the fluid, flow rate, operating temperature and pressure, target micron rating, and the dimensions or part number of the current element. Photos of the old filter and its housing are often the quickest way to identify a match.
Centro carries specialty filters from a wide network of manufacturers, many of which make elements to order for unusual sizes and conditions. Send us your details and our team can help you choose a filter that fits.
Related categories: Industrial Filtration | Filter Press | Filter Housings | Liquid Filtration | Automatic Cleaning
$14.55
Subject to factory lead times
$41.11
Subject to factory lead times
$42.40
Subject to factory lead times
$71.51
Subject to factory lead times
$75.00
Subject to factory lead times
$66.51
Subject to factory lead times
$140.00
Subject to factory lead times
$149.00
Subject to factory lead times
$19.80
Subject to factory lead times
$72.50
Subject to factory lead times
$131.00
Subject to factory lead times
$28.50
Subject to factory lead times
$44.90
Subject to factory lead times
$56.00
Subject to factory lead times
$75.50
Subject to factory lead times
$20.90
Subject to factory lead times
$27.30
Subject to factory lead times
$43.80
Subject to factory lead times
$34.30
Subject to factory lead times
$52.50
Subject to factory lead times
$75.00
Subject to factory lead times
$106.00
Subject to factory lead times
$112.00
Subject to factory lead times
$110.00
Subject to factory lead times
$14.55
Subject to factory lead times
$41.11
Subject to factory lead times
$42.40
Subject to factory lead times
$71.51
Subject to factory lead times
$75.00
Subject to factory lead times
$66.51
Subject to factory lead times
$140.00
Subject to factory lead times
$149.00
Subject to factory lead times
$19.80
Subject to factory lead times
$72.50
Subject to factory lead times
$131.00
Subject to factory lead times
$28.50
Subject to factory lead times
$44.90
Subject to factory lead times
$56.00
Subject to factory lead times
$75.50
Subject to factory lead times
$20.90
Subject to factory lead times
$27.30
Subject to factory lead times
$43.80
Subject to factory lead times
$34.30
Subject to factory lead times
$52.50
Subject to factory lead times
$75.00
Subject to factory lead times
$106.00
Subject to factory lead times
$112.00
Subject to factory lead times
$110.00
Subject to factory lead times
- 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.