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

Type 526Pressure temperature ratingsOrifice GMetric UnitsGValve size 1 1 / 2 G 3 1 1 / 2 G 3 1 1 / 2 G 3 1 1 / 2 G 3 1 1 / 2 G 3 2 G 3 2 G 3Flange rating class Inlet x Outlet 150 x 150 300L x 150 300 x 150 600 x 150 900 x 300 1500 x 300 2500 x 300Actual Orifice diameter d 0 [mm] 22.5 22.5 22,.5 22.5 22.5 22.5 22.5Actual Orifice area A 0 [mm 2 ] 398 398 398 398 398 398 398Minimum set pressure [bar] S/G/L 0.2 0.2 0.2 0.2 0.2 5.0 5.0Minimum set pressure [bar] S/G 3.4 3.4 3.4 9.2 9.2 9.2 9.2Balanced bellows Inconel [bar] L 3.2 3.2 3.2 18.5 18.5 18.5 18.5Body material: WCB 1.0619Pressure range p [bar] S/G/LMaximum -29 to 38 °C 19.7 19.7 51.0 102.1 153.1 255.5 255.5set pressure39 to 232 °C 12.8 19.7 42.4 85.2 127.2 212.4 255.5Outlet pressure limitConventional designOutlet pressure limitBalanced bellows design233 to 427 °C 5.5 19.7 28.3 56.9 85.2 142.1 236.619.7 19.7 19.7 19.7 51.0 51.0 51.015.9 15.9 15.9 15.9 32.4 32.4 32.4Body material: CF8M 1.4408Pressure range p [bar] S/G/LMaximum -268 to -60 °C 19.0 19.0 49.7 99.3 149.0 169.0 179.3set pressure-59 to -29 °C 19.0 19.0 49.7 99.3 149.0 248.3 248.3-28 to 38 °C 19.0 19.0 49.7 99.3 149.0 248.3 248.339 to 232 °C 12.4 12.4 34.1 67.2 102.4 171.0 248.3233 to 427 °C 5.5 5.5 29.0 58.3 87.2 145.5 242.8428 to 538 °C 1.4 1.4 24.1 48.3 72.4 120.7 201.0Outlet pressure limitConventional design19.0 19.0 19.0 19.0 41.4 41.4 49.7Outlet pressure limitBalanced bellows design15.9 15.9 15.9 15.9 32.4 32.4 32.4Body material: WC6 1.7357Pressure range p [bar] S/G/LMaximum 233 to 427 °C – – 35.2 70.0 105.2 175.2 255.5set pressure428 to 538 °C – – 14.8 29.7 44.8 74.5 124.1Outlet pressure limitConventional design– – 19.7 19.7 51.0 51.0 51.0Outlet pressure limitBalanced bellows design– – 15.9 15.9 32.4 32.4 32.4Body material: LCBPressure range p [bar] S/G/LMaximum -46 to 38 °C 18.4 18.4 48.0 96.0 144.1 240.1 255.5set pressure39 to 200 °C 13.8 13.8 42.5 85.1 127.6 212.7 255.5201 to 343 °C 8.4 8.4 36.4 72.8 109.2 182.0 255.5Outlet pressure limitConventional design18.4 18.4 18.4 18.4 48.0 48.0 48.0Outlet pressure limitBalanced bellows design15.9 15.9 15.9 15.9 32.4 32.4 32.4Remark: SA 352 Gr. LCB is not listed in the API 526. Pressure-Temperature Rating acc. to ASME B16.34 Table 2-1.3The stated Pressure-Temperature Rating are taken from ASME B16.34 Table 2-1.3 if the maximum pressure is not limited by API 526.Due to the extended material test certificate the LESER LCB can be applied as LCC, WCB, WCC and 1.0619with the respective pressure-temperature range as well.01/30