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

Type 526Pressure temperature ratingsOrifice QMetric UnitsValve size 6 Q 8 6 Q 8 6 Q 8 6 Q 8Flange rating class Inlet x Outlet 150 x 150 300L x 150 300 x 150 600 x 150Actual Orifice diameter d 0 [mm] 105.5 105.5 105.5 105.5Actual Orifice area A 0 [mm 2 ] 8742 8742 8742 8742Minimum set pressure [bar] S/G/L 0.2 0.2 0.2 0.2Minimum set pressure [bar] S/G 1.3 1.3 1.3 1.3Balanced bellows Inconel [bar] L 2.3 2.3 2.3 2.3Body material: WCB 1.0619Pressure range p [bar] S/G/LMaximum -29 to 38 °C 11.4 20.7 41.4set pressure39 to 232 °C 11.4 20.7 41.4233 to 427 °C 5.5Use 6 Q 820.7 41.4Outlet pressure limit300 x 150Conventional design7.9 7.9 7.9Outlet pressure limitBalanced bellows design4.8 7.9 7.9Body material: CF8M 1.4408Pressure range p [bar] S/G/LMaximum -268 to -60 °C 11.4 17.2 20.7set pressure-59 to -29 °C 11.4 20.7 41.4-28 to 38 °C 11.4 20.7 41.439 to 232 °C 11.4Use 6 Q 820.7 41.4233 to 427 °C 5.5 300 x 15020.7 41.4428 to 538 °C 1.4 20.7 41.4Outlet pressure limitConventional design7.9 7.9 7.9Outlet pressure limitBalanced bellows design4.8 7.9 7.9Body material: WC6 1.7357Pressure range p [bar] S/G/LMaximum 233 to 427 °C – 11.4 41.4set pressure428 to 538 °C – 11.4 29.7Outlet pressure limitUse 6 Q 8Conventional design– 300 x 1507.9 7.9Outlet pressure limitBalanced bellows design– 7.9 7.9QBody material: LCBPressure range p [bar] S/G/LMaximum -46 to 38 °C 11.4 20.7 41.4set pressure39 to 200 °C 11.4 20.7 41.4201 to 343 °C 8.4 20.7 41.4Use 6 Q 8Outlet pressure limit300 x 150Conventional design7.9 7.9 7.9Outlet pressure limitBalanced bellows design4.8 7.9 7.9Remark: 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.01/62