What is a bag filter

Bag Filter December 26, 2025 Multi Bag Filter Housing

Introduction
A bag filter is a pressure-type filtration system. The complete system consists of a filter housing, a supporting basket, and a filter bag.

Features

Large flow capacity
High filtration efficiency
Long service life of filter bags
Uniform flow distribution ensures even contaminant loading on the filter media
High mechanical strength
Simple, convenient operation; safe and economical

Working Principle

The liquid to be filtered is introduced into the top of the filter bag, which is supported by the restraining basket. This design allows the liquid to be evenly distributed across the entire filtration surface, ensuring uniform flow through the media without adverse turbulent effects.

The liquid flows from the inside of the filter bag to the outside, while retained particles are trapped inside the bag. When the filter bag is replaced, the pipeline liquid is not contaminated. The handle designed on the filter bag enables quick and convenient replacement.