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Type 526Flange drillingsType 526StandardFlange drillings according to DIN EN 1092 (up to PN 100) and DIN 2501 (from PN 160 up)Inlet Outlet Material Inlet OutletOrifice NPS standard NPS WCB/ PN PN PN PN PN PN PN PN PN PN PN PN PN PN[inch] flange class [inch] LCB WC6 CF8M 10/16 25 40 63 100 160 250 320 400 10 16 25 40 631" 300 2" H45 H46 H47 – – – – – – H50 H51 H52 H15 –D1" 600 2" – – – H10 H17 – – – – H50 H51 H52 H15 –1 1 / 2 " 1500 2" – – – – – H11 H12 – – H50 H51 H52 H15 –1 1 / 2 " 2500 3" – – – – – – H12 H13 – H50 H51 H52 H15 H161" 300 2" H45 H46 H47 – – – – – – H50 H51 H52 H15 –E1" 600 2" – – – H10 H17 – – – – H50 H51 H52 H15 –1 1 / 2 " 1500 2" – – – – – H11 H12 – – H50 H51 H52 H15 –1 1 / 2 " 2500 3" – – – – – – H12 H13 – H50 H51 H52 H15 H161 1 / 2 " 300L 2" – H45 – – – – – – – – H50 H51 H52 H15 –F1 1 / 2 " 300 2" – H46 H47 – – – – – – H50 H51 H52 H15 –1 1 / 2 " 1500 3" – – – H10 H17 H11 H12 – – H50 H51 H52 H15 H161 1 / 2 " 2500 3" – – – – – – H12 H13 – H50 H51 H52 H15 H161 1 / 2 " 300L 3" – H45 – – – – – – – – H50 H51 H52 H15 –1 1 / 2 " 300 3" – H46 H47 H10 – – – – – H50 H51 H52 H15 –G1 1 / 2 " 600 3" – – – H10 H17 H11 – – – H50 H51 H52 H15 –1 1 / 2 " 900 3" – – – – H17 H11 – – – H50 H51 H52 H15 H162" 1500 3" – – – – – – H12 H13 – H50 H51 H52 H15 H162" 2500 3" – – – – – – – – H14 H50 H51 H52 H15 H161 1 / 2 " 300L 3" – H45 H46 H47 – – – – – – H50 H51 H52 H15 –2" 300 3" – – H47 H10 – – – – – H50 H51 H52 H15 –H2" 600 3" – – – – H47 H10 – – – – – H50 H51 H52 H15 –2" 600 3" – – – H47 H10 – – – – – H50 H51 H52 H15 H162" 900 3" – – – – H17 H11 – – – H50 H51 H52 H15 H162" 1500 3" – – – – – H11 H12 – – H50 H51 H52 H15 H162" 300L 3" – H45 H46 H47 H10 – – – – – H50 H51 H52 H15 –J3" 600 4" – – H47 H10 – – – – – H50 H51 H52 H15 –3" 900 4" – – – – H17 H11 – – – H50 H51 H52 H15 H163" 1500 4" – – – – – H11 H12 – – H50 H51 H52 H15 H163" 300 4" H45 H46 H47 H10 – – – – – H50 H51 H52 H15 –3" 600 4" – – – H47 H10 – – – – – H50 H51 H52 H15 –K 3" 900 6" – – – – – H10 H17 H11 H12 – – H50 H51 – – –3" 900 6" – – – – H10 H17 H11 H12 – – H50 H51 H52 H15 –3" 1500 6" – – – H10 H17 H11 H12 – – H50 H51 H52 H15 –3" 300L 4" – H45 H46 H47 H10 – – – – – H50 H51 H52 H15 –4" 300 6" H45 H46 H47 H10 – – – – – H50 H51 – – –L 4" 600 6" – – – H10 H17 H11 – – – H50 H51 – – –4" 900 6" – – – – H17 H11 – – – H50 H51 – – –4" 1500 6" – – – – – – – H12 – – H50 H51 – – –4" 300 6" H45 H46 H47 H10 – – – – – H50 H51 – – –M 4" 600 6" – – – H10 H17 H11 – – – H50 H51 – – –4" 900 6" – – – – – H17 H11 H12 – – H50 H51 – – –4" 300 6" H45 H46 H47 H10 – – – – – H50 H51 – – –N 4" 600 6" – – – – H17 H11 – – – H50 H51 – – –4" 900 6" – – – – – – – H12 – – H50 H51 – – –4" 300L 6" – H45 H46 H47 – – – – – – H50 H51 – – –P4" 300 6" – H46 H47 – – – – – – H50 H51 – – –4" 600 6" – – – H10 H17 – – – – H50 H51 – – –4" 900 6" – – – – – – H11 H12 – – H50 H51 – – –Q6" 300 8" H45 H46 H47 – – – – – – H50 H51 H52 – –6" 600 8" – – – H10 H17 H11 – – – H50 H51 H52 – –6" 300L 8" H45 H46 H47 H10 – – – – – H50 H51 H52 – –R 6" 300 10" – – – H47 H10 – – – – – H50 H51 – – –6" 600 10" – – H47 H10 – – – – – H50 H51 – – –T 8" 300 10" – H46 H47 – – – – – – H50 H51 – – –Note: Flange drillings and facings meet always the requirements of mentioned flange standards. Flange thickness and outer diameter may vary from flange standard.For signs and symbols refer to page 00/0501/72 LWN 480.01-E
Type 526Flange facingsIndication Standard Inlet Outlet RemarkGeneralFlange undrilled – H38 H39Linde-V-Nut, Form V48 Linde Standard 420-08J07 J08 Groove: Rz 16Linde-V-Nut, Form V48A LWN 313.36J05 J06 Groove: Rz 4, e.g. with hydrogenType 526Lens seal form L(without sealing lens)Acc. to DIN ENDIN 2696LWN 313.35J11Flange facing Inlet Outlet RemarkJ12Raised faceDIN EN 1092 (new) DIN 2526(see also LWN 313.40)(old)Type B1PN 10 –PN 40Type CType D –PN 63 –PN 400PN 10 –PN 401)According to DIN EN 1092 groove depths and tongue heights increased compared to the formerly valid DIN (refer to LWN 313.40).LESER manufactures the groove at flanged valves by milling. If a customer demands a turned surface in the soil of the groove according to DIN 2512 and/orDIN EN 1092-1 an additional option code is necessary: “S01: bottom of the groove drilled”. Groove and tongue for PN160 flanges refer to DIN 2512/LWN 313.32.2)Smooth finish is not defined in the effective standards. For LESER‘s definition for smooth finish see page 00/05.For signs and symbols refer to page 00/05Note: Flange drillings and facings meet always the requirements of mentioned flange standards. Flange thickness and outer diameter may vary from flange standard.*–**L38PN 63–*Rz-data according toDIN EN 1092 in µmFacing: Rz = 12,5 – 50Type B2 Type E – L38 Facing: Rz = 3,2 – 12,5Tongue face C 1) Tongue face F L56 H92Groove face D 1) Groove face N L55 H91Male face E Male face V13 I90 H98Female face F Female face R13 I91 H99O-ring male face G Male face V14 I93 J02O-ring female face H Female face R14 I92 J04Acc. to ASME B16.5Smooth finish 2) Serrated finish RTJ-grooveBodymaterialInlet Outlet Inlet Outlet Inlet Outlet Inlet OutletOption code Option code CL300 CL600 CL900 CL1500 CL2500 CL150 CL300all all all L52 L53* *L58 H63Stud-bolts length for flange connection inlet and outletAll LESER safety valves Type 526 need at the inlet side longer stud-bolts for the flange connections as stated in ASME B16.5, due to the full nozzle design.Furthermore, due to the actual castings the stud bolts at the outlet can differ from ASME B16.5 as well.LESER state the stud-bolt length in LWN 001.29-E. For calculation of stud-bolts length the measure “s” stated on page 01/10-01/13 can be used.Connection acc. to <strong>API</strong> Standard 526 - 1984Valve sizeFlange rating classOrificeOption codeInlet Outlet InletE 1 1 / 2 " 3" drilled 2 1 / 2 " 2500 S01F 1 1 / 2 " 3" drilled 2 1 / 2 " 900 S01G 1 1 / 2 " 3" drilled 2 1 / 2 " 150 – 900 S01K 2 1 / 2 " 6" 900 – 1500 S01LWN 480.01-E01/73
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APIFlanged Safety Relief ValvesSeri
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ContentsChapter/PageGeneral 00/01Ap
Page 5 and 6:
General InformationGeneralApplicati
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Valve finderHow to find the right A
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How to useSelection chartsGeneralTh
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How to useGeneral8Base of calculati
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LEOLGeneralThis table is based on t
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TypeType 526Type 526Packed lever H4
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Type 526Conventional designItemMate
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Type 526Balanced bellows designMate
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Type 5264 5 6Options Documentation
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Type 526Article numbers - OverviewA
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d 0 = Actual orifice diameterA 0 =
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d 0 = Actual orifice diameterA 0 =
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Type 526WeightsUS UnitsBonnetallLif
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Type 526Orifice DArticle numbers, d
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Type 526Orifice DPressure temperatu
Page 35 and 36: Type 526Orifice EArticle numbers, d
Page 37 and 38: Type 526Orifice EPressure temperatu
Page 39 and 40: Type 526Orifice FArticle numbers, d
Page 41 and 42: Type 526Orifice FPressure temperatu
Page 43 and 44: Type 526Orifice GArticle numbers, d
Page 45 and 46: Type 526Orifice GPressure temperatu
Page 47 and 48: Type 526Orifice HArticle numbers, d
Page 49 and 50: Type 526Orifice HPressure temperatu
Page 51 and 52: Type 526Orifice JArticle numbers, d
Page 53 and 54: Type 526Orifice JPressure temperatu
Page 55 and 56: Type 526Orifice KArticle numbers, d
Page 57 and 58: Type 526Orifice KPressure temperatu
Page 59 and 60: Type 526Orifice LArticle numbers, d
Page 61 and 62: Type 526Orifice LPressure temperatu
Page 63 and 64: Type 526Orifice MArticle numbers, d
Page 65 and 66: Type 526Orifice MPressure temperatu
Page 67 and 68: Type 526Orifice NArticle numbers, d
Page 69 and 70: Type 526Orifice NPressure temperatu
Page 71 and 72: Type 526Orifice PArticle numbers, d
Page 73 and 74: Type 526Orifice PPressure temperatu
Page 75 and 76: Type 526Orifice QArticle numbers, d
Page 77 and 78: Type 526Orifice QPressure temperatu
Page 79 and 80: Type 526Orifice RArticle numbers, d
Page 81 and 82: Type 526Orifice RPressure temperatu
Page 83 and 84: Type 526Orifice TArticle numbers, d
Page 85: Type 526Orifice TPressure temperatu
Page 89 and 90: Orifice900 x 300 1500 x 300 2500 x
Page 91 and 92: Type 526Spare parts - Disc (Item 7)
Page 93 and 94: Type 526Spare parts - Stainless ste
Page 95 and 96: Type 526Spare parts - Gasket Body /
Page 97 and 98: Type 526Spare parts recommendations
Page 99 and 100: Type 526ApprovalsApprovalsOrifice D
Page 101 and 102: Type 526Capacities - SteamCapacitie
Page 103 and 104: Type 526Capacities - AirCapacities
Page 105 and 106: Type 526Capacities - WaterCapacitie
Page 107 and 108: Accessoriesand OptionsContentsChapt
Page 109 and 110: Accessories and OptionsCaps and lev
Page 111 and 112: Accessories and OptionsCaps and lev
Page 113 and 114: Accessories and OptionsMetal seat -
Page 115 and 116: Accessories and OptionsSoft seal di
Page 117 and 118: Accessories and OptionsSoft sealSof
Page 119 and 120: Accessories and OptionsBalanced bel
Page 121 and 122: Accessories and OptionsLift indicat
Page 123 and 124: Accessories and OptionsHeating jack
Page 125 and 126: Accessories and OptionsO-ring dampe
Page 127 and 128: Fax OrderPlease send your request t
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