Flow-tek offers cryogenic ball valves to be used in the production, transportation and storage of liquefied gasses. These specially designed valves have extended stems and bonnets installed to position the stem packing above the cryogenic fluid and provide a column of warmer vapor that insulates the stem seal from the effects of low temperatures. The cryogenic valves are based on the reliable stainless steel Triad 3-piece valve available with various end connections including threaded, socket weld and butt weld. Valves are available in sizes ½“ to 4“. Some of the key features include high-density TFM-1 600 seats and seals throughout the valve that enable the valve to be rated down to -218 °C service. Each valve is permanently marked with a flow direction arrow to prevent incorrect installation. Live loaded stem packing is utilised providing self-adjustment to compensate for wear and also thermal expansion and contraction. All valves are provided with blow-out proof stems.
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