No. SS2-8110-3110 Azbil Corporation - 3 - Note) The data in [ ] are values for PTFE inserted plain metals.. Figure 1 Flow characteristics Table 4 Allowable differential pressure Table 4-1 Model VBM Actuator model. No. Spring type Springless type GOM103S GOM124S GOM64LMS GOM84LM Nominal size (mm) Angle of vane opening Maximum differential pressure kPa {kgf/cm2} 100 0 ° (Fully closed) 981 {10.0} 60 ° (Fully opened) Air-to-close 310 {3.2} Air-to-open 340 {3.5} 125 0 ° (Fully closed) 981 {10.0} 60 ° (Fully opened) Air-to-close 150 {1.5} Air-to-open 280 {2.9} 150 0 ° (Fully closed) 981 {10.0} [810 {8.3}] 60 ° (Fully opened) Air-to-close 98 {1.0} Air-to-open 200 {2.0} 200 0 ° (Fully closed) 981 {10.0} [460 {4.7}] 981 {10.0} [460 {4.7}] 60 ° (Fully opened) Air-to-close 60 {0.6} Air-to-open 80 {0.8} 80 {0.8} 250 0 ° (Fully closed) 540 {5.5} [330 {3.4}] 620 {6.3} [330 {3.4}] 60 ° (Fully opened) Air-to-close 30 {0.3} 50 {0.5} Air-to-open 50 {0.5} 300 0 ° (Fully closed) 290 {3.0} [240 {2.4}] 350 {3.6} [240 {2.4}] 60 ° (Fully opened) Air-to-close 20 {0.2} Air-to-open 30 {0.3} 30 {0.3} 350 0 ° (Fully closed) 200 {2.0} 320 {3.3} [270 {2.8}] 60 ° (Fully opened) Air-to-close 10 {0.1} 50 {0.5} Air-to-open 30 {0.3} 400 0 ° (Fully closed) 140 {1.4} 240 {2.5} [200 {2.1}] 60 ° (Fully opened) Air-to-close 7 {0.07} Air-to-open 20 {0.2} 30 {0.3} 450 0 ° (Fully closed) 98 {1.0} 180 {1.8} 60 ° (Fully opened) Air-to-close 5 {0.05} 20 {0.2} Air-to-open 15 {0.15} 500 0 ° (Fully closed) 70 {0.7} 130 {1.3} 60 ° (Fully opened) Air-to-close 4 {0.04} Air-to-open 10 {0.1} 15 {0.15} 550 0 ° (Fully closed) 50 {0.5} 98 {1.0} 60 ° (Fully opened) Air-to-close 3 {0.03} 11 {0.11} Air-to-open 9 {0.09} Nominal size Travel (%) Cv value (%) (The above graph indicaties idealistic flow characteristics.) 4 4