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

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Type 526Pressure temperature ratingsOrifice MMetric UnitsValve size 4 M 6 4 M 6 4 M 6 4 M 6 4 M 6Flange rating class Inlet x Outlet 150 x 150 300L x 150 300 x 150 600 x 150 900 x 150Actual Orifice diameter d 0 [mm] 60.3 60.3 60.3 60.3 60.3Actual Orifice area A 0 [mm 2 ] 2846 2846 2846 2846 2846Minimum set pressure [bar] S/G/L 0.2 0.2 0.2 0.2 0.2Minimum set pressure [bar] S/G 2.6 2.6 2.6 6.3 10.5Balanced bellows Inconel [bar] L 2.2 2.2 2.2 10.5 10.5Body material: WCB 1.0619Pressure range p [bar] S/G/LMaximum -29 to 38 °C 19.7 51.0 75.9 75.9set pressure39 to 232 °C 12.8 42.4 75.9 75.9233 to 427 °C 5.5Use 4 M 628.3 56.9 75.9Outlet pressure limit300 x 150Conventional design19.7 19.7 19.7 19.7Outlet pressure limitBalanced bellows design5.5 11.0 11.0 11.0Body material: CF8M 1.4408Pressure range p [bar] S/G/LMaximum -268 to -60 °C 19.0 36.2 41.4 –set pressure-59 to -29 °C 19.0 49.7 69.0 –-28 to 38 °C 19.0 49.7 69.0 –39 to 232 °C 12.4Use 4 M 634.1 67.2 –233 to 427 °C 5.5 300 x 15029.0 58.3 –428 to 538 °C 1.4 24.1 48.3 –Outlet pressure limitConventional design19.0 19.0 19.0 –Outlet pressure limitBalanced bellows design5.5 11.0 11.0 –MBody material: WC6 1.7357Pressure range p [bar] S/G/LMaximum 233 to 427 °C – 35.2 69.0 75.9set pressure428 to 538 °C – 14.8 29.7 44.8Outlet pressure limitUse 4 M 6Conventional design– 300 x 15019.7 19.7 19.7Outlet pressure limitBalanced bellows design– 11.0 11.0 11.0Body material: LCBPressure range p [bar] S/G/LMaximum -46 to 38 °C 18.4 48.0 75.9 75.9set pressure39 to 200 °C 13.8 42.5 75.9 75.9201 to 343 °C 8.4Use 4 M 636.4 72.8 75.9Outlet pressure limit300 x 150Conventional design18.4 18.4 18.4 18.4Outlet pressure limitBalanced bellows design5.5 11.0 11.0 11.0Remark: 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.01/50
Type 526Pressure temperature ratingsOrifice MUS UnitsValve size 4 M 6 4 M 6 4 M 6 4 M 6 4 M 6Flange rating class Inlet x Outlet 150 x 150 300L x 150 300 x 150 600 x 150 900 x 150Actual Orifice diameter d 0 [inch] 2.37 2.37 2.37 2.37 2.37Actual Orifice area A 0 [inch 2 ] 4.43 4.43 4.43 4.43 4.43Minimum set pressure [psig] S/G/L 3.0 3.0 3.0 3.0 3.0Minimum set pressure [psig] S/G 37.7 37.7 37.7 91.4 152.3Balanced bellows Inconel [psig] L 31.9 31.9 31.9 152.3 152.3Body material: WCB 1.0619Pressure range p [psig] S/G/LMaximum -20 to 100 °F 285 740 1100 1100set pressure101 to 450 °F 185 615 1100 1100451 to 800 °F 80Use 4 M 6410 825 1100Outlet pressure limit300 x 150Conventional design285 285 285 285Outlet pressure limitBalanced bellows design80 160 160 160Body material: CF8M 1.4408Pressure range p [psig] S/G/LMaximum -450 to -76 °F 275 525 600 –set pressure-75 to -21 °F 275 720 1000 –-20 to 100 °F 275 720 1000 –101 to 450 °F 180Use 4 M 6495 975 –451 to 800 °F 80 300 x 150420 845 –801 to 1000 °F 20 350 700 –Outlet pressure limitConventional design275 275 275 –Outlet pressure limitBalanced bellows design80 160 160 –Body material: WC6 1.7357Pressure range p [psig] S/G/LMaximum 451 to 800 °F – 510 1000 1100set pressure801 to 1000 °F – 215 430 650Outlet pressure limitUse 4 M 6Conventional design– 300 x 150285 285 285MOutlet pressure limitBalanced bellows design– 160 160 160Body material: LCBPressure range p [psig] S/G/LMaximum -50 to 100 °F 265 695 1100 1100set pressure101 to 400 °F 200 615 1100 1100401 to 650 °F 125Use 4 M 6535 1065 1100Outlet pressure limit300 x 150Conventional design265 265 265 265Outlet pressure limitBalanced bellows design80 160 160 160Remark: 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.01/51
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NH 3HCLProduct RangeLESER Safety Va
Page 4 and 5:
GeneralGeneral InformationLESER - A
Page 6 and 7:
GeneralValve finderHow to find the
Page 8 and 9:
GeneralHow to useGeneral signs and
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GeneralHow to useSample Capacity sh
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GeneralLEOS/GThis table is based on
Page 14 and 15: GeneralSour gas service (H 2 S)Norm
Page 16 and 17: Type 526Conventional designType 526
Page 18 and 19: Type 526Balanced bellows designType
Page 21 and 22: Type 5264 5 6Options Documentation
Page 23 and 24: Type 526Article numbers - OverviewA
Page 25 and 26: d 0 = Actual orifice diameterA 0 =
Page 27 and 28: d 0 = Actual orifice diameterA 0 =
Page 29 and 30: Type 526WeightsUS UnitsBonnetLiftin
Page 31 and 32: Type 526Orifice DArticle numbers, d
Page 33 and 34: Type 526Pressure temperature rating
Page 35 and 36: Type 526Orifice EArticle numbers, d
Page 39 and 40: Type 526Orifice FArticle numbers, d
Page 43 and 44: Type 526Orifice GArticle numbers, d
Page 47 and 48: Type 526Orifice HArticle numbers, d
Page 51 and 52: Type 526Orifice JArticle numbers, d
Page 55 and 56: Type 526Orifice KArticle numbers, d
Page 59 and 60: Type 526Orifice LArticle numbers, d
Page 63: Type 526Orifice MArticle numbers, d
Page 67 and 68: Type 526Orifice NArticle numbers, d
Page 71 and 72: Type 526Orifice PArticle numbers, d
Page 75 and 76: Type 526Orifice QArticle numbers, d
Page 79 and 80: Type 526Orifice RArticle numbers, d
Page 83 and 84: Type 526Orifice TArticle numbers, d
Page 87 and 88: Type 526Flange drillingsFlange dril
Page 89 and 90: Orifice900 x 300 1500 x 300 2500 x
Page 91 and 92: Type 526Spare parts - ComponentsIte
Page 93 and 94: Type 526Spare parts - Disc (Item 7)
Page 95 and 96: Type 526Spare parts - Nozzle (Item
Page 97 and 98: Type 526Spare parts - Balanced bell
Page 99 and 100: Type 526Spare parts - Gasket Body /
Page 101 and 102: Type 526ApprovalsApprovalsOrifice D
Page 103 and 104: Type 526Capacities - SteamCapacitie
Page 105 and 106: Type 526Capacities - AirCapacities
Page 107 and 108: Type 526Capacities - WaterCapacitie
Page 109 and 110: Accessoriesand OptionsContentsChapt
Page 111 and 112: Accessories and OptionsCaps and lev
Page 113 and 114: Accessories and OptionsCaps and lev
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Accessories and OptionsMetal seat -
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Accessories and OptionsSoft seal di
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Accessories and OptionsSoft seal se
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Accessories and OptionsBalanced bel
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Accessories and OptionsHigh tempera
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Accessories and OptionsLift indicat
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Accessories and OptionsHeating jack
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Safety valves according to API standard type 526 - Leser.ru

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