Types of Bag Filters
There is a very good chance that you don’t that you may not know much about all the different shapes and sizes of filters, even though you are using filters.
Bag filters are one such type that many applications use. Many times, you find that liquid bag filters are used and are a less expensive way to remove bulk solids from certain applications. These filters are for wet applications , not at all like the carbon filters you may be familiar with. Some applications that they are very likely used in are ink filtration, as a liquid pre-filter, paint straining, and especially coolant filtration.
Of course, there are many options to consider with bag filters. These filters have lots of shapes but you may find that predominately they are welded and sewn. The type of filter bag you will use, always depends on the application. Other facts about the environment will dictate which type you use, such as temperature and particle sizes you want to filter. Coolant filtration filters are a prime example of this. Many filter bags are made from a material called polypropylene, and that is a good place to start. Likely , if high temperature is a concern, people will go with this material.
Another type of material that has a high rating for more difficult applications is nylon mesh. Usually a bag filter will do exactly what it is designed for, so if yours is breaking too some , you should adjust the material you buy. For example, bags that filter fairly clean water will last much longer than those used for mud.
Finally , filter bags may look fine to the naked eye, but when you look with a 10X scope you may find that the filter is damaged more than you think. A good thing to keep in mind when thinking about filter change intervals. You can monitor when filters are clogged by watching the pressure go up. As the pressure increases, the filter is getting clogged.