Start with the water source
Identify mains, well, storage-tank, treated or recirculated water and any existing treatment. Review suspended particles, hardness and potential contamination before choosing the filter arrangement. The illustrated stainless bag filter housing uses a replaceable filter bag, not a pleated cartridge. Match bag dimensions, retaining ring, filter media and retention rating to the selected housing and water duty.
Specify removal performance, not just microns
Ask for the particle size, removal efficiency and test conditions behind the rating. Nominal and absolute labels alone do not provide a like-for-like comparison. Match the element to the pump and nozzle requirements and the actual water analysis.
- Particle size and stated removal efficiency
- Rated flow and clean-element pressure loss
- Permitted differential pressure and replacement criteria
- Element, seal and housing compatibility
Protect the pump without starving its inlet
Check the available inlet pressure at the required flow with clean and loaded filters. A restricted inlet filter can impair pump supply. Follow the selected pump manufacturer's inlet requirements and provide pressure monitoring and maintenance access.
Shared filtration or separate branches
Size a shared filter for the maximum permitted simultaneous demand, and consider what happens during cleaning or element replacement. Separate branches may simplify isolation but need their own flow and pressure-loss checks. Do not fit a low-pressure filter housing into a high-pressure discharge line.
Plan water treatment and service
Particle filtration alone does not remove dissolved hardness or establish microbiological safety. Review any treatment separately. Record filter pressure difference, element changes and flushing; set maintenance intervals from operating conditions and the equipment instructions.
- Water source and available analysis
- Nozzle model, system flow and filter location
- Housing pressure and temperature limits
- Safe isolation, depressurization and spare-element access