Application guidance for dust filtration, liquid filtration, and HVAC filter selection.
What payment terms does SFFILTECH accept?
Available payment methods, deposit and balance requirements, currency, bank details, and required transaction documents are confirmed in the formal quotation or pro forma invoice for each order.
Buyers should verify the beneficiary information against the approved commercial documents before payment. No payment term should be assumed from a previous order unless it is reconfirmed in writing.
The choice between 304 and 316 stainless steel should be based on the process fluid, chloride level, chemical concentration, operating temperature, cleaning chemicals, contamination limits, and required corrosion resistance. Grade 316 generally offers better resistance to chloride-related pitting and crevice corrosion, but it is not suitable for every chemical or temperature. Review all wetted components—not only the bag filter housing shell—including the basket, fittings, welds, and seal materials. Final material compatibility should be confirmed for the actual operating and cleaning conditions.
The cost of an industrial bag filter housing depends on the housing material, size and number of filter bags, design flow, operating pressure and temperature, connection and closure types, surface finish, basket and seal materials, testing, documentation, quantity, and shipping scope. Optional instruments, valves, coatings, or code-related requirements can also change the quotation. Compare available industrial bag filter housings using the same operating conditions, material scope, accessories, and inspection requirements; housing size alone is not enough for an accurate price comparison. Provide the information needed for a filtration quotation for a project-specific review.
An industrial air filter should be evaluated for replacement when its measured differential pressure at normal operating airflow reaches the documented final-pressure-drop limit for the filter or system. Earlier replacement may be necessary if airflow becomes inadequate, the filter is damaged, wet, or contaminated, or process and hygiene requirements are no longer met. A universal pressure-drop threshold is not reliable because filter design, efficiency, fan capacity, and operating conditions vary. Trend readings over time and inspect pre-filters and instruments before deciding.
Air-filter resistance is the pressure difference measured across a filter while air is flowing through it. For a meaningful comparison of industrial air filters, review pressure-drop data at the same airflow or face velocity, filter dimensions, efficiency class, media condition, and test method. Distinguish the initial pressure drop of a clean filter from the specified final pressure drop used for maintenance planning. A lower value alone does not show equivalent performance when filtration efficiency, airflow, or test conditions differ.
