... adjusting screws can make the actuator more accurate .5.Position indicator consistent with VID/VIE3845,NAMUR standards.6.The gas source interface ... -piece ball valveModel : ZTQ61(6,8,2)F (N, P, H, Y )Bore: DN10-100mmPressure: 1.6, 2.5, 4.0 ... , PPL, N, H, YMode of action: double-acting, single-acting (spring reposition)Control: Switch , Adjust .Selection of Accessories: solenoid valve, locator, limit ...