Strahman has launched its high performance, trunnion-mounted, metal-seated ball valves that have been specifically designed for severe service applications such as those found in oil and gas, petrochemical, refining, polymer, steam, catalyst, DCU (delayed coking unit) and coal gasification industries. Ranging from PN 10 to PN 630-4500lb, the special coatings (hardened trim) on the ball and metal seats make them suitable for use in high temperature, high pressure, and abrasive environments. The valves come in one-piece and two-piece designs. The one-piece design includes bottom entry for simplifying maintenance. This is done by dropping the valve internals without having to first remove the valve from the line. Other features, besides trunnion mounting, of the metal-seated ball valve include: chromium carbide coated metal seating designed to minimize peak effect on edges and increase the lifetime of the ball and seat surfaces; and floating seats that allow expansion in temperature and the purge of the body inner seat cavity. Independent seats provide bi-direction lightness in the valve. The valves come with numerous options, ranging from bore size, to body and trim materials, and welded jackets around the body and flanges, as well as others.
