Employing low-friction technology, Aero2 rack-and-pinion actuator is constructed for universal operation of quarter-turn valves. Core components are stainless steel, baked epoxy, and hard-anodized aluminum, preventing corrosion for exterior applications or where chloride solutions, oxidizing acid, and alkaline media are present. Direct-mount actuator includes high-density bearings, bidirectional stroke adjustment, NAMUR manifold, and Versa view continuous indicator.