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Flow-Tek offers cryogenic ball valves with extended stems and bonnets installed to position the stem packing above cryogenic fluid and provide a column of warmer vapor that insulates the stem seal from the effects of low temperatures. The valves are based on the company’s stainless steel Triad three-piece valves available with threaded socket weld and butt weld connections. They are also available in a flanged valve design, and in sizes from 1⁄2 in. to 4 in.
Flow-Tek; 832-912-2300; www.flow-tek.com