No. SS2-8310-0300 Azbil Corporation - 2 - Cam characteristics: Linear (cam 1, standard) and two other kinds. By selecting the other two cams, valve characteristics can be approximated as follows: (1) For reverse acting valve Cam 2 . Linear characteristic valve plug --> Quick opening characteristic . Equal percentage characteristic valve plug --> Linear characteristic Cam 3 . Linear characteristic valve plug --> Equal percentage characteristic . Quick opening valve plug -->Linear characteristic (2) For direct acting valve The effect of cams 2 and 3 applied to direct action valves is reversed as compared with the case of reverse action Figure 1 Cam characteristics valves. 100 90 80 70 60 50 40 30 10 100 0 20 10 20 30 40 50 60 70 80 90 100 Direct acting positioner 0 10 20 30 40 50 60 70 90 80 Reverse acting positioner Valve stem travel (%) Input pressure span (%) CAM 3 CAM 1 CAM 2 Figure 2 External dimensions 163 55 108 Supply air connection Rc1/4 Output air connection Rc1/4 Output air connection Rc1/4 Input air connection Rc1/4 17 28 58 278 105 147 48 56 20 60 (Unit : mm) Ordering information When ordering, please specify; 1) 2) 3) Model number Input range Supply air pressure 4) 5) 6) Actuator model No. Output characteristic Option