Start with the news release Ball valves handle low and high pressures from Swagelok, which we summarised at the time by saying "The Swagelok SK's spring-loaded seats and floating ball provide leak-tight integrity in both low and high-pressure systems while reducing wear and extending cycle life. ". Several months prior to that, we featured the news release Ball valve assemblies come with actuators from Swagelok: "ISO5211-compliant actuators are available factory assembled to a broad range of ball valves or in kits for field assembly.".
 
In January 2006, we covered the news from J+J Automation UK - take a look at Pneumatic actuators cover larger valves which says: "Two new ranges of CH-air quarter turn rack and pinion pneumatic actuators cover large-diameter butterfly valves and high-torque ball valves.".
 
Take a look also at the news release from Bray Controls USA, Blow-out proof stem aids valve design, as well as Ball valves handle temperature fluctuations from Swagelok, and Pneumatic actuators overcome electric limitations from Festo.