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Liquid Filter Bags
Since 1994, mmp Filter has been manufacturing high-performance liquid filter bags for efficient solid-liquid separation. As a leading filter bag manufacturer, we provide standard and custom industrial bag filter systems designed for demanding applications across industries
What is a Bag Filter and How Does it Work?
A bag filter is an industrial filtration device designed to remove solid particles from liquids by passing an adulterated substance through an absorptive filter medium. A filter bag works on depth or surface filtration principles, capturing contaminants while allowing clean liquid to flow out of the housing. These liquid filter bags are installed inside a filter vessel supported by a perforated basket to maintain structure during operation. In systems that require a high flow of fluid and a uniform hold on particles, filter bags are extremely effective. In bag filtering applications for liquids such as water, chemicals, oils, and coolants, they ensure that the equipment is protected while maintaining a stable operating condition.
- A filter bag will either filter out contaminants from the product being processed on the outside surface of the bag (as in a mesh filter-type application) or within the body of the felt material, depending on the required filtration level and micron rating used for the bag.
- The majority of filtration systems function off an inside-out flow pattern, which allows for contaminants to be trapped inside the filter bag while the clean filtrate leaves the bag.
- These types of filtration systems can also handle high viscosity liquids, highly aggressive chemical solutions, or high levels of contamination without clogging up very quickly.
- Available as micron filter bags, they range from coarse to fine filtration levels for various industrial applications.
- They protect pumps, membranes, spray nozzles, heat exchangers, and other downstream equipment from particulate damage.
- Compared to cartridge systems, bag filtration is more economical for high-volume liquid processing.
Liquid Filter Bag Manufacturer
mmp Filter has been a leader in filter bag manufacturing since its inception in 1994. We have over 30 years of experience producing filters that meet the strictest requirements for industrial processes across many different industries.
All of our dust collector filter bags are made using only the finest materials, including polypropylene, polyester, nylon, PTFE, and various other specialty media to create both chemically compatible and structurally sound filters.
All of our filter bag dust collectors are designed to operate under varying amounts of pressure, temperature, and heavy loads of contaminants. We can also offer both standard and custom-designed bag filter systems for clients based on their specific needs.
Contact UsWe manufacture:
Polypropylene filter bags
Polyester filter bags
Nylon filter bags
PTFE filter bags
Carbon filter bags
Precision-engineered micron filter bags
Custom-designed industrial filter bags
Key Features of the mmp Filter Bag
Filter bags are specifically designed to deliver consistent filtration performance under industrial conditions without compromising structural integrity. The high-performance media and advanced production methods ensure these bags will continue to function effectively for long periods and reliably capture any contaminants present in the filtered fluid. All bags are tested before use to ensure that they will retain particles down to the specified micron size and that there is no leakage or bypass when sealed properly. The bags can be used with a variety of fluids, including water, oil, chemicals, and process fluids. They are built to withstand the rigors of demanding applications.
High Dirt-Holding Capacity
The high dirt-holding capacity of the liquid filter bags allows for a large volume of contaminants to be captured by the bag before needing to be replaced, resulting in fewer operational interruptions.
Low Pressure Drop
The low-pressure drop design of the bags allows for increased fluid flow through the bag, which will increase the overall energy efficiency of the system and performance.
Dust Collector Bags
The bags feature a durable seam construction that can be either stitched or fully welded, greatly reducing the chances of leakage or bypassing.
Safe for Sensitive Processes
For sensitive pharmaceutical and food-grade applications, silicone-free construction is available.
High performance
Sealing ring configurations are also available for all bag styles to ensure compatibility with all types of housing systems and to prevent leaks or bypassing.
Bag Filters for Liquid Filtration
The use of liquid filter bags is simple to install and replace, thus reducing the time and labor costs associated with maintenance.
Types of Bag Filters Offered by mmp
Industrial applications require different filter characteristics based on the type of fluid, type and amount of contamination present in the fluid, the temperature of the fluid, and/or exposure to chemicals. mmp manufactures an extensive selection of industrial filter bags that can accommodate these different conditions. Each of our bag filtration products is engineered to provide optimum quality and durability as well as meet regulatory requirements
Contact Us01
01 Standard Filter Bags
Standard liquid filter bag technology has a number of different applications in general solid-liquid separation and is therefore used widely throughout many industries. The bags work with most standard filter housings and come in either felt or mesh.
- The felt used to manufacture these filter bags is made of high-quality polypropylene or polyester felt, resulting in a durable filter bag that provides consistent performance for the user.
- These filter bags have been engineered to efficiently remove contaminants from liquid bag filters that are used for water, chemical, or industrial fluids.
- Filter bags are available in many different micron ratings, so they may be used for both fine and coarse filtration.
- Standard Liquid Filter Bags are compatible with common industrial bag filter housing and can be easily replaced.
- This product represents a low-cost option for routine industrial filtration applications.
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02 Fully Welded Filter Bag
Ultrasonic welding technology is used to create fully welded filter bags without stitch holes or leaks, which results in seamless construction that prevents bypassing, increasing the accuracy of micron filter bags.
- These bags can be used in the pharmaceutical industry, as well as in food and fine chemical manufacturing processes, due to improved structural integrity that allows them to be utilized in higher-pressure applications.
- As a result, these filter bags will produce consistent and leak-free operations in systems that are considered demanding.
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03 High-Capacity Bag Filters
High-capacity industrial bag filter systems are designed to increase filtration area and extend operational life.
- Increased surface area improves flow rate and reduces pressure build-up.
- An extended dirt-holding capacity reduces the frequency of bag replacement.
- Optimized design minimizes downtime and maintenance interventions.
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04 Food and Pharmaceutical Liquid Filter Bags
These liquid filter bags were developed especially for use in hygienic processes where compliance and traceability are required.
- Made from FDA-compliant materials used in food and beverage manufacturing.
- Individually packaged to keep the bags sanitary and avoid contamination.
- Made out of calendared felt to reduce fiber loss.
- Compatible with sanitary stainless steel housings.
- Use in dairy, biotechnology, and pharmaceutical industries, as well as in beverages.
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05 Extended Life Filter Bags
Extended-life industrial filter bags are perfect for applications where constant replacement is difficult or costly.
- Progressive-density media captures particles efficiently while preventing rapid clogging.
- Offers up to five times longer service life compared to conventional felt bags.
- Designed for heavy contaminant processes and continuous operation.
- Fully welded options ensure structural strength and leak prevention.
- Reduces overall filtration cost by minimizing change-out frequency.
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06 Custom Filter Bags
mmp designs custom-engineered liquid filter bags for specialized industrial needs.
- Custom micron ratings for specific particle retention requirements.
- High-temperature resistant materials for challenging environments.
- Chemical-resistant options for aggressive liquid filtration.
- Tailored dimensions and sealing systems for unique housings.
- Engineered solutions for pharmaceutical, nuclear, automotive, and specialty industries.
Liquid Filter Bags by Micron Rating
One of the considerations for engineers & purchasing teams in selecting Liquid Filter Bags is micron rating. A micron is a millionth of a meter and is the size of particle that a Filter bag can trap. The selected rating will depend on what the liquid type is, how much contamination is present, and how much clarity will be needed.
While a lower micron rating results in finer filtration, the filter will operate at different levels of performance based on the media’s construction and the flow conditions present. Understanding these parameters will allow you to generate dependable filter bag systems throughout their life cycle.
Nominal vs. Absolute Rating
Nominal-rated filters will trap a percentage of the given size particles; however, absolute-rated filters will provide a more accurate representation of the retention of given size particles.
Contact UsMicron Rating :
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1-5 micron filters
Used in applications where small particle extraction is required, such as polishing stages, equipment that requires protection from large particulates, etc.
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10-25 micron filters
The filters are good for medium-level filtration of process liquids, where visible particles need to be controlled without restricting flow.
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50-100 micron filters
The filters are typically associated with the removal of sediment and pre-filtration on bag-filtered water, coolants, and general liquid processing systems.
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150-200 micron filters
The filters are ideal for impacting separating out larger debris from the liquid source.
Liquid Filter Bags by Size (Standard Industry Sizing)
Equivalent to micron selection, the size of the filter bag is critical for achieving proper sealing, flow rate stability, and effective operation. The industry standard for pleated filter bags is based on sizes ranging from Size 1 through Size 6; each of which is made to correspond to a different housing dimension. If the incorrect size is used, the bag may not properly seal against the housing, may bypass, leak, and/or operate inefficiently, which is why it is so necessary to ensure the industrial bag filter systems are matched with the correct bag sizes.
- Custom Sizes: mmp can manufacture any length or diameter of industrial filter bag if the application requires a specific dimension.
- Application-Based Selection: If there is uncertainty about the sizing, reviewing the technical specifications will provide the best chance of obtaining the right fit and the best performance from the bag.
Size 1
This is usually a moderate flow size and is made with shorter bag lengths to meet minimum throughput requirements.
Size 2
This is a larger, longer style bag to support higher flow rates and longer service intervals.
Sizes 3 and 4
These sizes are for specialty purposes and are generally used in specific industries that have unusual housing configurations.
Benefits of Bag Filters
Bag filter systems are used extensively in industry because they are easy to use and effective. They’re easy to use on many different liquids and are generally less expensive than using cartridges if you are filtering large quantities of a liquid.
Compared to cartridge filters, liquid filter bags usually will hold more dirt before they have to be changed out, making them easier to maintain over time. If the liquid filters are chosen correctly, they will keep processes running and protect costly machinery and equipment.
- Customizable configurations: Bag filter systems can be fabricated to fit a specific process by choosing the right micron rating, type of filtration media, and size of filter bag needed.
- High dirt holding capacity: A well-designed bag filter will hold enough contaminants before requiring replacement, which helps to improve the amount of time during which the filter system is in operation.
- Operational Efficiency: The low pressure differential across the bag itself will help to keep system performance consistent.
- Versatility: There are a variety of different types of materials that are available. The bag filters may be made from polypropylene, polyester, nylon, or PTFE material.
- Cost Control: In most cases, bag filter systems will be less expensive to operate than cartridge-based filter systems when processing large quantities of liquids.
Applications of Filter Bags
Air filter bags can be utilized wherever liquid clarity, protection of equipment, and consistency of processes matter. Because of their versatility in media and micron ratings, industrial filter bags can be used in many different industries. Liquid Filter Bags help to ensure that your operation remains consistent and efficient – from clean room applications to heavy industrial processing environments.
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Industrial Filter Bags for Liquid Filtration – Coolant, Oil & Dust Collector Bags
mmp manufactures liquid filter bags as well as filtration products for specialized industries. These include products specifically for coolant filtration, oil processing, and various applications where cleanliness of fluids is critical to the operation and longevity of equipment. Dust collector bags and dust collector filter bags are typically used by various industrial facilities for controlling air and particulate within the manufacturing facility.
