A-T Controls engineered its M-Series metal seat ball valve with specially coated matched balls and seats to stand up to high temperatures, pressures and abrasive materials encountered in the oil and gas, chemical, power generation, pulp and paper, food processing, and mining industries. Valves in the M-series have a temperature range of -20 degrees Fahrenheit to 661 degrees Fahrenheit 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 in applications involving abrasive fluids and steam. Two optional coatings are also available -- a tungsten carbide coating for heavy slurry environments and a chrome carbide for higher-temperature applications. An oversized stem prevents deformation at higher pressures and temperatures. A larger ball design provides a tight seal to prevent leakage, and an Inconel seat spring maintains positive contact between the ball and seat during operation.
M-Series valves are available with four connection options, including flanged, threaded, socket weld and butt weld, and body material options include WCB, CF8 and CF8M. Special material is available based on application. Nominal pipe size range is 0.5 to 8.0 inches. A unidirectional shutoff is standard, with a bidirectional shutoff available for back-flow applications.
Precision CNC machining ensures the ball and spring live-loaded seats seal tightly for superior shutoff and tight sealing, even at low temperature and pressure. Safety features include an antistatic device, a blowout-proof stem and fire-safe design that conforms to API 607 4th edition.