Bray Controls has unveiled the Series 92/93 actuator, which features two independently adjustable travel stop screws and a cam on the output shaft to permit precise bi-directional adjustment of actuator movement in both open and closed positions for quarter turn valves. Available in two versions—double acting and spring return—the rack-and-pinion, opposed-piston actuator are intended for on-off and throttling applications. It offers a maximum pressure of 140 psig and temperature ranges of -40F to +200F. For more information, go to www.bray.com
NASA and Boeing developed a huge, carbon composite cryogenic fuel tank for deep space missions, and started testing it last month. The 18-ft cryotank will enable heavy-lift launch vehicles to send both humans and robots into deep space.
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