ranging from 452 to 700°F (269 to 371°C) and up to 12,000 psi (828 BAR). They are available with Dyna-Pak packing, blow-outproof stems, and stem threads above the packing for long service. Severe-service shutoff valves can be equipped with additional features such as locked bonnets, nonrotating stem tips, and high-temperature packing materials. They range in size from 0.0625 to 4 in. (4 to 102 mm) and come in a variety of materials including 303, 316, and 316L stainless steels, Monel, brass, Hastelloy C, titanium, and Carpenter 20. The valves are certified to CRN and PED requirements, and can be built to meet N.A.C.E. MR-07-75 requirements.
Circle Seal Controls Inc.,
2301 Wardlow Circle, Corona, CA 92880,