Most Investment Casting Foundries have ventilation systems that cause significant variations in the foundry’s ambient pressure. When exhaust fans are turned on or large roll-up doors are open and closed the building pressure can swing positive or negative. These changes will dramatically effect performance of furnaces operating in the foundry, which are designed to operate at neutral or slightly negative pressures. To address this problem, Pacific Kiln has developed the Automatic Pressure Control System for FlashFire, Burnout and Preheat Furnaces. This System, which is available as an option on all of Pacific Kiln’s new furnaces and as a Retrofit Package, offers numerous benefits including:

  • Prevents smoke leaks
  • Improves heat distribution throughout furnace
  • Reduces cold face temperatures
  • Increases retention time and Afterburner performance
  • Improves furnace efficiency

The Automatic Pressure Control system is available in three sizes to fit square stacks with 24 in., 30 in. and 36 in. outside dimensions. The damper section is designed to bolt-up directly to existing Pacific Kiln stacks and can easily be adapted to fit other stacks The system comes complete with an automatically controlled damper, a pressure sensor/indicator and all required electrical components. The Retrofit Package includes an enclosure for the pressure sensor/indictor and electrical components.