Designed for petrochemical, chemical and cryogenic applications, Circle Seal's shutoff valves meet the requirements of gas and liquid applications that range from -452 to 700oF (-269 to 371 oC and up to 12,000 psi. Severe-service shutoff valves are offered with additional safety and performance features such as locked bonnets, non-rotating stem tips and high temperature packing materials. Sizes range from 0.625 to 4" and come in many materials, including 303, 316 and 316L stainless steels, Monel, brass, Hastelloy C, titanium and Carpenter 20.