API - Leser

Type 526Orifice LPressure temperature ratingsUS UnitsValve size 3 L 4 3 L 4 4 L 6 4 L 6 4 L 6 4 L 6Flange rating class Inlet x Outlet 150 x 150 300L x 150 300 x 150 600 x 150 900 x 150 1500 x 150Actual Orifice diameter d 0 [inch] 2,11 2,11 2,11 2,11 2,11 2,11Actual Orifice area A 0 [inch 2 ] 3,48 3,48 3,48 3,48 3,48 3,48Body material: WCB 1.0619Temperature rangePressure range p [psig] S/G/LMaximum -20 to 100 °F 285 285 740 1000 1500 –set pressure101 to 450 °F 185 285 615 1000 1500 –Outlet pressure limitConventional designOutlet pressure limitBalanced bellows designBody material: CF8M 1.4408451 to 800 °F 80 285 410 825 1235 1500Temperature range285 285 285 285 285 285100 100 170 170 170 170Pressure range p [psig] S/G/LMaximum -450 to -76 °F 275 275 535 535 700 –set pressure-75 to -21 °F 275 275 720 1000 1500 –-20 to 100 °F 275 275 720 1000 1500 –101 to 450 °F 180 180 495 975 1485 –451 to 800 °F 80 80 420 845 1265 –801 to 1000 °F 20 20 350 700 1050 –Outlet pressure limitConventional design275 275 275 275 275 –Outlet pressure limitBalanced bellows design100 100 170 170 170 –Body material: WC6 1.7357Temperature rangePressure range p [psig] S/G/LMaximum 451 to 800 °F – – 510 1000 1500 1500set pressure801 to 1000 °F – – 215 430 650 1080Outlet pressure limitConventional design– – 285 285 285 285Outlet pressure limitBalanced bellows design– – 170 170 170 170Body material: LCBTemperature rangePressure range p [psig] S/G/LMaximum -50 to 100 °F 265 265 695 1395 2090 3480set pressure101 to 400 °F 200 200 615 1230 1845 3075401 to 650 °F 125 125 535 1065 1600 2665Outlet pressure limitConventional design285 285 285 285 285 285Outlet pressure limitBalanced bellows design100 100 170 170 170 170LRemark: 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-E01/47