What are the Differences Between Cartridge and Bag Filter Housing?

In industrial and commercial sectors, filter housing selection plays a vital role in water and air purification. And cartridge filter housings and bag filter housing are the two most common types. Here’s a closer look at the differences between the two filter housings to help you make an informed decision when choosing.

1. Work Principle

Cartridge Filter Housing: Filter cartridges are used as filter elements, which you could choose different filtration rating to follow the requirements. When water flows through the filter cartridges, impurities are trapped on the surface of the cartridges, thereby achieving purification. The advantage of cartridge filter housings is that they have high filtration precision and can effectively remove particles as small as 0.1 micron.

Bag Filter Housing: Bag filter housings use replaceable filter bags as filter element. Water flows into the filter bag, impurities are intercepted inside the bag, and clean water flows out through the bag. The advantages of bag filters are simple structure, easy to replace and clean.

2. Applications

Cartridge Filter Housings: suitable for occasions with high water quality requirements, such as pure water production, high precision manufacturing, medical treatment and laboratories, etc. In addition, due to the high precision of filter element, the filter housing is also suitable for removing tiny suspended solids and dissolved substances in water.

Bag Filter Housings: Bag filter housings are widely used in sewage pretreatment, circulating water treatment, air purification and other fields. Its advantage is that it can easily handle large flow of impurities, and it is convenient and quick to replace the filter bag.

3. Maintenance and Replacement

Cartridge Filter Housing: The filter cartridges need to be replaced regularly, and it is generally recommended to replace it every 3~6 months. When replacing, the filter cartridges need to be removed and cleaned, or directly replaced with a new filter cartridge. Due to the high precision of the filter cartridges, the frequency of cleaning or replacement is relatively high.

Bag Filter Housing: Bag filter housing cleaning cycles typically take months or even years, depending on the amount of impurities and frequency of use. When cleaning, just take out the filter bag and clean it, the operation is simple and convenient. However, in some cases it may be necessary to replace the entire filter bag or filter component.

4. Operating Cost

In terms of initial investment, cartridge filter housings generally cost more than bag filter housing. This is mainly because the filter cartridge material and manufacturing process requirements are higher, resulting in increased costs. The cost of bag filter housing is relatively low and is suitable for situations with low water quality requirements, but it may not be suitable for areas with high water quality requirements. In the long run, overall operating costs are likely to be lower than bag filter housings because cartridge filter housing provide better filtration and require less cleaning and maintenance.

To sum up, cartridge filter housings and bag filter housings each have their own advantages and application field. When choosing, you need to weigh it based on actual needs and usage conditions. For applications with higher water quality requirements and high precision filtration, the cartridge filter housing is a better choice; For applications with large flow impurity treatment and low precision filtration, bag filter housings have more advantages. Understanding the differences between these two types of filter housings can help you choose the right filtration equipment to ensure clean and safe water quality in industrial and commercial processes.