No. SS2-8113-0300 Azbil Corporation - 10 - Allowable differential pressure Contoured-type metal seat (%CF, LCF, %C, LC) : PTFE packing Valves with type DAP actuator Note) 1) When a backup system for pressure drop at the air source is used, select the allowable differential pressure from whichever is lower-constant supplied air pressure or backup system set pressure (trip pressure). 2) ..:Positioner is necessary. ..: Can be operated either with or without positioner. 3) Take care not to cause the maximum allowable differential pressure to exceed the maximum operating pressure designated by ANSI B 16. 34-1981 or JIS B2201-1984. 4) The upper figures denote the operating allowable differential pressure. The lower denote allowable differential pressure at full closure. Table 11 Air-to-close and Air-to-open Actuator model No. Supply pressure kPa {kgf/cm2} Positioner Differential pressure (by port size (inches)) kPa {kgf/cm2} 1. 2 2. 3 4 5 6 8 DAP560 290 {3.0} .. 3920 {40.0} 3920 {40.0} 3920 {40.0} 3610 {36.8} 2030 {20.7} 1290 {13.2} 780 9810 {8.0} {100.0} 8130 {82.9} 5100 {52.0} 390 {4.0} .. 3920 {40.0} 3920 {40.0} 3920 {40.0} 3920 {40.0} 2730 {27.8} 1740 {17.8} 1060 9810 {10.8} {100.0} 9810 {100.0} 6860 {70.0} 4800 {49.0} 490 {5.0} .. 3920 {40.0} 3920 {40.0} 3920 {40.0} 3920 {40.0} 3420 {34.9} 2200 {22.4} 1330 9810 {13.6} {100.0} 9810 {100.0} 8630 {88.0} 6080 {62.0} DAP1000 290 {3.0} .. 3920 {40.0} 3920 {40.0} 3620 {36.9} 2310 {23.6} 1410 {14.4} 830 9120 {8.5} {93.0} 6370 {65.0} 390 {4.0} .. 3920 {40.0} 3920 {40.0} 3920 {40.0} 3120 {31.8} 1890 {19.3} 1120 9810 {11.4} {100.0} 8630 {88.0} 4800 {49.0} 490 {5.0} .. 3920 {40.0} 3920 {40.0} 3920 {40.0} 3920 {40.0} 2380 {24.3} 1410 9810 {14.4} {100.0} 9810 {100.0} 6080 {62.0} DAP1500 290 {3.0} .. 3920 {40.0} 3480 {35.5} 2120 {21.6} 1270 5210 {13.0} {53.1} 390 {4.0} .. 3920 {40.0} 3920 {40.0} 2840 {29.0} 1720 6970 {17.5} {71.1} 4610 {47.0} 490 {5.0} .. 3920 {40.0} 3920 {40.0} 3570 {36.4} 2160 8790 {22.0} {89.6} 5880 {60.0}