Stephen E. Pirnat

Quest Integrity Group LLC provides asset integrity and reliability management services. The firm provides inspection and engineering assessment services and products to the refining and chemical, pipeline, syngas, petrochemical, ammonia, and power industries. It specializes in in-line inspection for unpiggable pipelines, furnace tube inspection, asset integrity management, steam reformer tube inspection, and fitness-for-service assessment. The company was founded in 1971 and is headquartered in Kent, WA.

John Zink Co. LLC provides industrial products and environmental solutions. Its products include process, duct and boiler burners, flaring systems and accessories, flare gas recovery systems, vapor recovery and combustion systems, and thermal oxidation systems. The company was founded in 1929 and is headquartered in Tulsa, OK.

Pangborn LLC manufactures surface preparation systems, equipment and services. The firm's brands include Berger, Vogel & Schemmann and Pangborn. Its customers include the automotive, foundry, steel, national defense, aerospace and aircraft industries. The company was founded by Thomas W. Pangborn in 1904 and is headquartered in Fairburn, GA.

Part of Flowserve Corp., Ingersoll-Dresser Pumps Srl is an Italian company that makes pumps used in industrial and commercial applications. The private company is based in Desio, Italy. Ingersoll-Dresser Pumps was acquired by Trane Technologies Plc from Halliburton Co. on December 30, 1999 for $370 million.

Part of Flowserve Corp., Flowserve Canada Corp. is a Canadian company that manufactures and sells metal valves. The private company is based in Brantford, Canada.