API - Leser

Type 526Orifice KPressure temperature ratingsUS UnitsValve 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 [inch] 1,69 1,69 1,69 1,69 1,69 1,69Actual Orifice area A 0 [inch 2 ] 2,25 2,25 2,25 2,25 2,25 2,25Body material: WCB 1.0619Temperature rangePressure range p [psig] S/G/LMaximum -20 to 100 °F 285 740 1480 2220 2200set pressure101 to 450 °F 185 615 1235 1845 2200451 to 800 °F 80 410 825 1235 2060Use 3 K 4Outlet pressure limit300 x 150285 285 285 285 600Conventional designOutlet pressure limitBalanced bellows designBody material: CF8M 1.4408Temperature range150 150 200 200 200Pressure range p [psig] S/G/LMaximum -450 to -76 °F 275 525 600 600 750set pressure-75 to -21 °F 275 720 1440 2160 2220-20 to 100 °F 275 720 1440 2160 2220101 to 450 °F 180 495 975 1485 2480451 to 800 °F 80 Use 3 K 4420 845 1265 2110801 to 1000 °F 20300 x 150350 700 1050 1750Outlet pressure limitConventional design275 275 275 275 600Outlet pressure limitBalanced bellows design150 150 200 200 200Body material: WC6 1.7357Temperature rangePressure range p [psig] S/G/LMaximum 451 to 800 °F – – 510 1015 1525 2220set pressure801 to 1000 °F – – 215 430 650 1080Outlet pressure limitConventional design– – 285 285 285 600Outlet pressure limitBalanced bellows design– – 150 200 200 200Body material: LCBTemperature rangePressure range p [psig] S/G/LMaximum -50 to 100 °F 265 695 1395 2090 3480set pressure101 to 400 °F 200 615 1230 1845 3075401 to 650 °F 125 535 1065 1600 2665Use 3 K 4Outlet pressure limit300 x 150285 285 285 285 600Conventional designOutlet pressure limitBalanced bellows design150 150 200 200 200KRemark: 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-E01/43