Leslie Controls, a CIRCOR International brand, and a worldwide manufacturer of valves for the power generation, industrial, marine and oil and gas markets for over a century, features its K-Max Eccentric Plug Rotary Control Valve, one of the most versatile and robust valves of its type, and an improvement on the performance and durability of traditional rotary control valves. The K-Max incorporates the cam-action, low-friction plug operation that provides tight shutoff over a long service life in a variety of flow control applications, including high and low-pressure steam systems; clean, dirty, and corrosive liquids and gasses; and erosive and abrasive slurries.
Featuring bi-directional flow capability, the K-Max is versatile and can handle mediums that are normally flowed to open and flowed to close. The inherent versatility of this design offers the advantage of using one valve style for many applications, allowing for plant standardization and minimal stocking requirements. In addition, the efficient straight-through flow design allows for a much lower volume cost than conventional globe-style control valves.
The K-Max’s eccentric rotary plug action allows the plug to break free of the seat ring upon initial rotation of the shaft, resulting in a longer seat ring service life and improved shutoff integrity. The valve features a rangeability of 100:1, allowing precise throttling over a wide range of flows, and also has a self-aligning orbital seat, which allows orbital movement of the seat ring to provide self-alignment with the plug at assembly. The seat ring and plug rigidly mate with every closure of the valve, enabling the valve to maintain excellent shutoff capability.