A-T Controls M-Series Metal Seat Ball Valves for High Temperatures and Abrasive Surfaces
New M-series metal seat ball valves from A-T Controls are engineered with specially coated matched balls and seats to stand up to high temperatures, pressures and abrasive materials encountered in the oil/gas, chemical, power generation, pulp and paper, food processing and mining industries.
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Valves in the M-Series have a temperature range of -20°F to 661°F, and a pressure rating up to ANSI class 600. M-series ball and seat materials include stainless steel, stellite welded, and hard chrome-plated steel, allowing the valves to perform well in applications involving abrasive fluids and steam. Two optional coatings are also available - a tungsten carbide (TC) coating for heavy slurry environments, and a chrome carbide (CC) coating for higher temperature applications. An oversized stem prevents deformation at higher pressures and temperatures. Larger ball design provides a tight seal, preventing leakage, and an Inconel seat spring maintains positive contact between the ball and seat during operation.www.a-tcontrols.com
Cobalt-based Stellite 6 has been the workhorse for providing improved wear resistance and service life in valve components installed in power generating facilities for over 75 years.
All of these valves need to be built to precise fits and finishes and to stringent performance requirements because “On a spacecraft, everything has got to work. If it breaks, you’re done,” he said.
For decades, valve manufacturers have provided the maximum recommended working pressures and temperatures for their products, based on the materials used in the pressure-containing parts.