Case Histories

Case History One

  • Special Application: Valves Designed for Zebra Mussel Control
  • Customer: Electric Utility
  • Plant/Facility Type: Fossil Fuel Generating Stations
  • Pratt designed and manufactured a variety of large diameter circular and rectangular butterfly valves for use in re-circulating hot water systems for zebra mussel control via thermal treatment.

Case History Two

  • Special Application: Earthquake Proof Valves
  • Customer: Municipal Water Works
  • Plant/Facility Type: Large Water Storage Tank
  • Pratt designed and manufactured hydraulically actuated valves for a water storage application so that the valves would automatically operate in the event of an earthquake. This lead to the development of a valve that will withstand forces of up to 6G's.

Case History Three

  • Special Application: Customized Actuation/ Isolation Valves
  • Customer: Confidential client
  • Plant/Facility Type: Decommissioning Facility
  • Pratt designed and manufactured valves that would isolate a working chamber in the event of a nuclear emergency during the decommissioning of armed nuclear warheads. The valves are able to close in a millisecond using specially designed Pratt electro-pneumatic cylinder actuators.

Case History Four

  • Special Application: Valves Designed for Harsh Environments
  • Customer: Jet Engine Manufacturing Company
  • Plant/Facility Type: Test Facility
  • Pratt designed and manufactured a 144" diameter butterfly valve for the emergency cooling system at a jet engine test facility. The valve was designed to provide quick isolation to counteract the tremendous heat generated by the engines during testing.

Other unique applications:

  • In the fire protection systems guarding the hangar for the President's jet Air Force One (UL groundhogs and posts)
  • At the White House (blast valves for explosion isolation)
  • Guarding B1B bomber hangars (PIVAs)
  • Catastrophe Canyon at MGM/Disney World (rectangular valves)
  • Nuclear Power Plants around the world
  • At the world's largest water treatment plant (Chicago at Navy Pier)
  • At international airports across the US
  • Disney's Wild Animal Park in Florida