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GeneralHow to useSample Capacity sheet –How to select capacities for steam: Type 526, Valve size 1 F 2Type 526Capacities – SteamCapacities for saturated steam according to AD 2000-Merkblatt A2,based on set pressure plus 10 % overpressure.8Capacities at 1 bar (14,5 psig) and below are based on 0,1 bar(1,45 psig) overpressure.Capacities for saturated steam according to ASME Section VIII (UV),based on set pressure plus 10% overpressure.Capacities at 2,07 bar (30 psig) and below are based on 0,207 bar(3 psig) overpressure.Metric Units1AD 2000-Merkblatt A2 [kg/h]Orifice D E F 2 G HAct. Orifice dia. d0 [mm] 14 14 3 18 22,5 28,3Act. Orifice area A 0 [mm 2 ] 154 154 254 4 398 629LEOS/G* ) [inch 2 ] 0,111 0,196 5 0,324 0,506 0,801Set pressure [bar]Capacities [kg/h]0,2619 54 89 139 2210,5 42 90 149 232 3671 71 134 2217345 5462 120 217 359 561 8883 166 296 489 764 1209US Units ASME Section VIII [lb/h]Orifice D E F G HAct. Orifice dia. d0 [inch] 0,551 0,551 0,709 0,886 1,11Act. Orifice area A 0 [inch 2 ] 0,239 0,239 0,394 0,616 0,975LEOS/G* ) [inch 2 ] 0,111 0,196 0,324 0,506 0,801Set pressure [psig]Capacities [lb/h]15 183 321 531 830 131320 211 371 613 957 151530 266 469 775 1212 191740 328 577 954 1491 235950 389 686 1133 1771 2802* ) LEO S/G = LESER Effective Orifice steam/gas please refer to page 00/09Explanation Type 526, Valve size 1 F 2No. Description Metric Units US Units Example1Code AD 2000-Merkblatt A22OrificeF3Actual orifice diameter d 0 [mm] [inch] 184Actual orifice area A 0 [mm 2 ] [inch 2 ] 2545LESER Effective Orifice LEO S/G [inch 2 ] [inch 2 ] 0,3246Set pressure [bar g ] [psig] 17Capacity [kg/h] [lb/h] 2218Base of calculation see table page 00/0800/07 LWN 480.01-E