UT12 ,UT16 ,UT17 ,UT21, UT26 ,UT31,UT36 ,UT41 ,UT46 ,UT51 ,UT56 ,UT61, UT66 ,UT71 ,UT76 Pneumatic Actuators,Compact design utilizes the same body for double acting and spring return units. Utilizing NAMUR VDI/VDE 3845 and ISO 5211 dimensions Standard 90° rotation, with optional 120°, 135°, 150°, and 180° Female pinion drive standard, with optional drives to meet specific application requirements Ideal for high cycle applications Rugged tooth design allowing for manual override High visibility position indication High cycle life wear pads serves as both guide and wear bearings Epoxy coated spring cartridges are pre-loaded for safety