Lined Valve Co. has created what is said to be one of the world's largest valves.

Lined Valve Co. has created what is said to be one of the world's largest valves. Fitted to a 96-inch pipe for a Chicago storm and wastewater treatment plant, the knife gate valve is 34 feet tall, 11 feet wide and weighs 52,000 pounds. It sold for a reported $1.5 million.

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