Dura-LifeTM Filter Bags Yield 5X Filters in Foundry on Green Sand Dura-Life filter bags in a Donaldson Torit HPT dust collector are yielding 5X longer life than conventional polyester and passing the ongoing stack emissions tests. Industry: Foundry / Alloy Casting Problem: Short life (6-8 months) with conventional polyester filter bags, and high ?P over the life of the bags. Solution: Donaldson Torit Dura-Life filter bags now perform 5X as long, at lower ?P . When business increased and this foundry needed to add another shift, the plant manager wondered if the existing Donaldson Torit HPT dust collector could handle the increased dust load. They were using conventional 16-oz polyester needled felt bags and they changed them out at 6” ?P . The problem was that the ?P often reached 5” afte

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