API - Leser

Type 526Orifice KPressure temperature ratingsMetric UnitsKValve size 3 K 4 3 K 4 3 K 4 3 K 4 3 K 6 3 K 6Flange rating class Inlet x Outlet 150 x 150 300L x 150 300 x 150 600 x 150 900 x 150 1500 x 300Actual Orifice diameter d 0 [mm] 43 43 43 43 43 43Actual Orifice area A 0 [mm 2 ] 1452 1452 1452 1452 1452 1452Body material: WCB 1.0619Temperature rangePressure range p [bar] S/G/LMaximum -29 to 38 °C 19,7 51,0 102,1 153,1 153,1set pressure39 to 232 °C 12,8 42,4 85,2 127,2 153,1233 to 427 °C 5,5 28,3 56,9 85,2 142,1Use 3 K 4Outlet pressure limit300 x 15019,7 19,7 19,7 19,7 41,4Conventional designOutlet pressure limitBalanced bellows designBody material: CF8M 1.4408Temperature range10,3 10,3 13,8 13,8 13,8Pressure range p [bar] S/G/LMaximum -268 to -60 °C 19,0 36,2 41,4 41,4 51,7set pressure-59 to -29 °C 19,0 49,7 99,3 149,0 153,1Outlet pressure limitConventional designOutlet pressure limitBalanced bellows designBody material: WC6 1.7357-28 to 38 °C 19,0 49,7 99,3 149,0 153,139 to 232 °C 12,4 34,1 67,2 102,4 171,0233 to 427 °C 5,5 Use 3 K 429,0 58,3 87,2 145,5428 to 538 °C 1,4300 x 15024,1 48,3 72,4 120,7Temperature range19,0 19,0 19,0 19,0 41,410,3 10,3 13,8 13,8 13,8Pressure range p [bar] S/G/LMaximum 233 to 427 °C – – 35,2 70,0 105,2 153,1set pressure428 to 538 °C – – 14,8 29,7 44,8 74,5Outlet pressure limitConventional designOutlet pressure limitBalanced bellows designBody material: LCBTemperature range– – 19,7 19,7 19,7 41,4– – 10,3 13,8 13,8 13,8Pressure range p [bar] S/G/LMaximum -46 to 38 °C 18,4 48,0 96,0 144,1 240,1set pressure39 to 200 °C 13,8 42,5 85,1 127,6 212,7201 to 343 °C 8,4 36,4 72,8 109,2 182,0Use 3 K 4Outlet pressure limit300 x 15019,7 19,7 19,7 19,7 41,4Conventional designOutlet pressure limitBalanced bellows design10,3 10,3 13,8 13,8 13,8Remark: 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 2-1.3Due 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.01/42 LWN 480.01-E