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.
M-Series valves are available with four connection options – 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 (NPS) range is 0.5 to 8.0 inches. A uni-directional shutoff is standard, with a bi-directional 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 anti-static device, a blowout-proof stem and fire-safe design that conforms to API 607 4th edition.
Details and specifications for the entire line of AT-Controls' metal seat ball valves and accessories are available in two new product brochures, "M Series Floating Metal Seat Ball Valve" and "M Series 3-piece High Performance Metal Seat Ball Valve."
www.a-tcontrols.com
Smart electric actuatorsFlow control and services provider Flowserve Corporation has launched the Flowserve ValveSight™ for the Limitorque MX/QX family of smart electric actuators. ValveSight for Limitorque is designed to provide enhanced diagnostic and graphical user interface features for facilities using the Foundation Fieldbus protocol for their digital communication networks.
The Limitorque MX and QX use ValveSight to monitor the status, alarms and health of the valve actuator. Embedded predictive diagnostics provide advanced warning of pending problems, helping reduce operational costs associated with unscheduled plant shutdowns and loss of productivity. Additional value is realised by a reduction in commissioning time and a greater visibility into overall valve performance.
With ValveSight for the Limitorque MX/QX, plant operators can fine tune their process control through the use of a Proportional-Integral-Derivative function block. Plant maintenance personnel also benefit from a graphical diagnostic tool set that offers a proactive service approach to Partial Stroke Testing, Travel Histogram, Data/Operational Logging, and LimiGard TM circuit protection.
www.flowserve.com
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