Reverse-Air Woven Fiberglass Filter Bag

Reverse-Air Woven Fiberglass Filter Bag

SFFILTECH supplies finished woven fiberglass filter bags for selected reverse-air dust collectors. The bag is reviewed as part of the existing collector system, so its construction is confirmed before quotation rather than assumed from the product name alone.

Construction Review for Existing Collectors

Reverse-air systems commonly filter from the inside of the bag toward the outside and use reversed airflow for cleaning. The final airflow and cleaning arrangement are confirmed from the collector design.

Tubular form, an open bottom, J-bolt or other top suspension, and external support rings are possible reverse-air configurations. These features are not universal: the top and bottom construction, tube-sheet connection, ring material, number and spacing are confirmed from the equipment drawing, collector dimensions or a sample bag.

Dimensions and Replacement Information

Diameter and length are produced to the required collector fit and are confirmed from drawings, equipment measurements or an existing sample. For replacement work, photographs and measurements of the old bag can support identification, while a sample bag can be reviewed for material, construction and treatment.

Temperature, Treatment and Operating Conditions

For this woven fiberglass product, the accepted selection boundary is generally below 260°C for continuous operation and not above 300°C for peak temperature. Final suitability still depends on the complete bag construction and the actual operating conditions.

Available treatment options may include silicone-oil, graphite, Teflon B, PTFE membrane or lamination, and acid-repellent treatment. Treatment selection is confirmed against the process gas, dust, moisture or chemical exposure; no treatment is presented as universally suitable.

Information Required Before Quotation

Please provide the following information so the finished bag can be reviewed against the existing reverse-air collector:

• Collector type and cleaning direction
• Equipment drawing or sample bag
• Tube-sheet connection and bottom construction
• Top suspension arrangement
• Support-ring material, number and spacing if specified
• Bag diameter, length and quantity
• Operating temperature, dust and process-gas conditions

SFFILTECH will use these inputs to confirm the construction, dimensions and treatment before quotation for the selected reverse-air dust-filtration application.