Safety valves according to API standard type 526 - Leser.ru

LEOLGeneralThis table is based on the rated coefficient of discharge for steams and gases of LESER safety valves certified by ASME.The appropriated K-values are shown in the column “K-value” of the table.LEO L [inch 2 ] = A 0 [inch 2 ] . ( K ) 0,650LEO L LESER Effective Orifice (for liquid)Orifice acc.API 526Flangerating classValve size d 0 [inch] d 0 [mm] K-valueLEOL[inch 2 ]% of nexthigher orifice% of nextlower orificeD 0.110 100.0% 100.0%150 – 600 1 D 2 0.551 14.0 0.343 0.126 64.2% 114.5%900 – 1500 1 1 / 2 D 2 0.551 14.0 0.343 0.126 64.2% 114.5%2500 1 1 / 2 D 3 0.551 14.0 0.343 0.126 64.2% 114.5%E 0.196 100.0% 100.0%150 – 600 1 E 2 0.551 14.0 0.579 0.213 69.2% 108.4%900 – 1500 1 1 / 2 E 2 0.551 14.0 0.579 0.213 69.2% 108.4%2500 1 1 / 2 E 3 0.551 14.0 0.579 0.213 69.2% 108.4%F 0.307 100.0% 100.0%150 – 600 1 1 / 2 F 2 0.709 18.0 0.579 0.351 69.8% 114.4%900 – 2500 1 1 / 2 F 3 0.709 18.0 0.579 0.351 69.8% 114.4%G 0.503 100.0% 100.0%150 – 900 1 1 / 2 G 3 0.886 22.5 0.579 0.549 69.9% 109.1%1500 – 2500 2 G 3 0.886 22.5 0.579 0.549 69.9% 109.1%H 0.785 100.0% 100.0%150 – 300L 1 1/ 2 H 3 1.114 28.3 0.579 0.868 67.5% 110.6%300 – 1500 2 H 3 1.114 28.3 0.579 0.868 67.5% 110.6%J 1.287 100.0% 100.0%150 – 300L 2 J 3 1.417 36.0 0.579 1.405 76.5% 109.2%300 – 1500 3 J 4 1.417 36.0 0.579 1.405 76.5% 109.2%K 1.838 100.0% 100.0%150 – 600 3 K 4 1.693 43.0 0.579 2.005 70.3% 109.1%900 – 1500 3 K 6 1.693 43.0 0.579 2.005 70.3% 109.1%L 2.853 100.0% 100.0%150 – 300L 3 L 4 2.106 53.5 0.579 3.104 86.2% 108.8%300 – 1500 4 L 6 2.106 53.5 0.579 3.104 86.2% 108.8%M 3.600 100.0% 100.0%150 – 900 4 M 6 2.374 60.3 0.579 3.943 90.9% 109.5%N 4.340 100.0% 100.0%150 – 900 4 N 6 2.598 66.0 0.579 4.724 74.0% 108.8%P 6.380 100.0% 100.0%150 – 900 4 P 6 3.150 80.0 0.579 6.940 62.8% 108.8%Q 11.050 100.0% 100.0%150 – 600 6 Q 8 4.154 105.5 0.579 12.070 75.4% 109.2%R 16.000 100.0% 100.0%150 6 R 8 4.961 126.0 0.579 17.353 66.7% 108.5%300 – 600 6 R 10 4.961 126.0 0.579 17.353 66.7% 108.5%T 26.000 100.0% 100.0%150 – 300 8 T 10 6.358 161.5 0.579 28.283 108.8%00/10