Multi-bag filter housings are used when one bag does not provide enough filtration area or when the required flow and solids load would create excessive change-out frequency. Selection should begin with process data rather than a fixed bag count.
Define the Hydraulic Duty
Provide normal and peak flow, viscosity, inlet pressure, operating temperature, allowable clean and terminal pressure drop, and expected operating cycle. Bag quantity should be checked against the selected media and solids loading.
Check Liquid and Material Compatibility
Housing material, basket, filter bag and gasket must be reviewed against the complete liquid composition and cleaning chemicals. Stainless steel grade, coating or polymer selection cannot be confirmed from the industry name alone.
Confirm Mechanical Configuration
- Bag size, quantity, support basket and sealing interface
- Inlet and outlet size, standard and orientation
- Closure type, vent, drain, gauges and lifting arrangement
- Required opening height and maintenance access
- Design code, documentation and inspection requirements
Avoid Unsupported Performance Assumptions
A larger housing does not automatically guarantee lower operating cost, longer bag life or a specific filtration result. These outcomes depend on the process, bag media, contaminant distribution, operating procedure and approved equipment design.
Next Step
Compare configurations in the FiltEdgeUS liquid filter housing archive. U.S. projects can continue through FiltEdge, while manufacturing and engineering requirements can be reviewed with SFFILTECH.