Dura-LifeTM Filter Bags Maintain Low Pressure Drop Without Downtime Cleaning When he learned that Donaldson® Torit® Dura-LifeTM filter bags are designed to maintain low pressure drop (DP), the maintenance manager at this arc furnace company decided to try them in a Whiting dust collector that filters burn fumes and metal alloys from the furnace. The standard polyester bags he had been using would last for 300 heats, 5 hours per heat, or about 1500 hours, and the crew had to perform extra pulse-cleaning cycles regularly during downtime to get DP below 6 “wg. Because of the hazardous materials generated, filter changeouts were costly. The Dura-Life filter bags surprised him! The crew ran 600 heats, about 3000 hours, and found that the DP continued at a stable 4 “wg without downtime cleaning.

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