Metal Seated Ball Valves withstand abrasive environments.February 20, 2009 -
Offered in 1- and 2-piece designs and ranging from PN 10 to PN 630-4500 lb, trunnion-mounted ball valves feature chromium carbide coated metal seating. Floating seats allow expansion and purge of body inner seat cavity, while integral shoulder in valve body and shoulder machined on stem prevent blow-out. Anti-static design prevents accumulation of electric charges on ball, and separate ball and stem assures proper centering of ball between 2 seats.
(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)
Original Press release
Strahman Valves, Inc.
2801 Baglyos Cir.
Bethlehem, PA, 18020
USA
New Trunnion Mounted, Metal Seated Ball Valves Available from Strahman
Bethlehem, PA- High performance, trunnion-mounted, metal seated ball valves are now available from Strahman 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 630-4500 lb., the special coatings (hardened trim) on the ball and metal seats make them ideal for use in high temperature, high pressure, and abrasive environments.
The valves come in one-piece and two-piece designs for ease of use and maintenance. 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:
o Chromium carbide coated metal seating designed to minimize peak effect on edges and increase the lifetime of the ball and seat surfaces.
o 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.
o Anti-blow out feature, with the valve stem securely mounted in the valve, whereby, even in case of a packing failure, the integral shoulder in the valve body and the shoulder machined on the stem prevents blow-out of the stem.
o Bidirectional upstream sealing, with two independent, spring-loaded seats that prevents line pressure from by-passing the ball. In low pressure situations, the springs maintain seating thrust. As pressure increases, it pushes the up-stream seat against the ball, increasing sealing force. The bottom vent connection allows purging of the inner seat cavity, making the design double block and bleed.
o Anti-static design prevents any accumulation of electric charges on the ball, therefore preventing unexpected electric discharge.
o Separate ball and stem assures proper centering of the ball between the two seats, preventing any bending or flexing of the stem which prolongs the life of the packing.
o Forged body and trim.
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. Further information on the Trunnion Mounted, Metal Seated Ball Valves from Strahman can be obtained by writing to Strahman Valves at 2801 Baglyos Circle, Bethlehem, PA 18020, calling 1-484-893-5080 or on the Internet at strahmanvalves.com.
Headquartered in Bethlehem, Pennsylvania, USA, Strahman Valves is a worldwide leader in the manufacture of high quality Wash Down Equipment and Industrial Valve products. Since its inception in 1921, the Company has earned a reputation for reliable products that provide superior performance, innovative solutions to complex problems and long-term reliability. The company's products have become the standard in numerous industries, including chemical, petrochemical, polymer, biotechnology, pharmaceutical, food processing, beverage, dairy, mining, and pulp and paper.
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