API - Leser

Type 526Orifice QPressure temperature ratingsUS 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 [inch] 4,15 4,15 4,15 4,15Actual Orifice area A 0 [inch 2 ] 13,55 13,55 13,55 13,55Body material: WCB 1.0619Temperature range Pressure range p [psig] S/G/LMaximum -20 to 100 °F 165 300 600set pressure101 to 450 °F 165 300 600451 to 800 °F 80Use 6 Q 8300 600Outlet pressure limit300 x 150115 115 115Conventional designOutlet pressure limitBalanced bellows designBody material: CF8M 1.4408Temperature range70 115 115Pressure range p [psig] S/G/LMaximum -450 to -76 °F 165 250 300set pressure-75 to -21 °F 165 300 600-20 to 100 °F 165 300 600101 to 450 °F 165 Use 6 Q 8300 600451 to 800 °F 80 300 x 150300 600801 to 1000 °F 20 300 600Outlet pressure limitConventional design115 115 115Outlet pressure limitBalanced bellows design70 115 115Body material: WC6 1.7357Temperature rangePressure range p [psig] S/G/LMaximum 451 to 800 °F – 165 600set pressure801 to 1000 °F – 165 430Outlet pressure limitUse 6 Q 8–Conventional design300 x 150115 115Outlet pressure limitBalanced bellows design– 115 115Body material: LCBTemperature rangePressure range p [psig] S/G/LMaximum -50 to 100 °F 265 695 1395set pressure101 to 400 °F 200 615 1230401 to 650 °F 125Use 6 Q 8535 1065Outlet pressure limit300 x 150115Conventional design115 115Outlet pressure limitBalanced bellows design70 115 115QRemark: 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.LWN 480.01-E01/63