... adjusting screws can make the actuator more accurate .5.Position indicator consistent with VID/VIE3845,NAMUR standards.6.The ... new international standards ISO5211 and DIN3337(F03-F25). Pneumatic three-piece ball valveModel : ZTQ61(6,8,2)F (N ... -acting (spring reposition)Control: Switch , Adjust .Selection of Accessories: solenoid valve, locator, limit switch, F.R..L. Combination unit. Manua Device ...