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Triad offers the series ST high performance butterfly valves for use in steam and various process systems. The double offset design of the ST provides prolonged service life of the seal. The high performance valve is available in both carbon steel and stainless steel with other metals offered as special production. ANSI class 150 and 300 are available both in lug and wafer designs and come standard with a direct mount actuator design. The standard seat design is a reinforced PTFE material. Triad does offer a metal seat option that can perform at temperatures to 900°F. The valve is manufactured to multiple standards including API 609, ANSI B16.34 and API 598 all under an audited ISO 9001:2008 quality control program.