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Type 526Axial needle bearing (Item 69)Type 526Axial needle bearing (Item 69) Material 316 1.4401Orifice Body materialMaterial-No.Flange rating class150 x 150 300L x 150 300 x 150 600 x 150 900 x 300 1500 x 300 2500 x 300D250.0749.0000 250.0749.0000 250.0749.0000 250.0749.0000 250.0749.0000 250.0749.0000 250.0749.0000E 250.0749.0000 250.0749.0000 250.0749.0000 250.0749.0000 250.0749.0000 250.0749.0000 250.0749.0000allF 250.0749.0000 250.0749.0000 250.0749.0000 250.0749.0000 250.0749.0000 250.0749.0000 250.0749.0000G 250.0749.0000 250.0749.0000 250.0749.0000 250.0749.0000 250.0749.0000 250.0849.0000 250.0849.0000Orifice Body materialFlange rating class150 x 150 300L x 150 300 x 150 600 x 150 900 x 150 1500 x 300H250.0749.0000 250.0749.0000 250.0849.0000 250.0849.0000 250.0849.0000 250.0849.0000J all 250.0849.0000 250.0849.0000 250.0949.0000 250.0949.0000 250.0949.0000 250.0949.0000K 250.0949.0000 250.0949.0000 250.0949.0000 250.0949.0000 250.0949.0000 250.0949.0000Orifice Body materialFlange rating class150 x 150 300L x 150 300 x 150 600 x 150 900 x 150 1500 x 150L 250.0949.0000 250.0949.0000 250.0949.0000 250.0949.0000 250.0949.0000 250.0949.0000M 250.0949.0000 250.0949.0000 250.0949.0000 250.0949.0000 250.0949.0000N 250.0949.0000 250.0949.0000 250.0949.0000 250.0949.0000 250.0949.0000P all 250.0949.0000 250.0949.0000 250.1049.0000 250.1049.0000 250.1049.0000Q 250.1049.0000 250.1049.0000 250.1049.0000 250.1049.0000R 250.1049.0000 250.1049.0000 250.1049.0000 250.1049.0000T 250.1049.0000 250.1049.0000 250.1049.000001/82 LWN 480.01-E
Type 526Spare parts recommendationsThe following recommendations for spare parts should be taken as a guideline.The actual needs for the replacement of parts depend on various conditions like• operating temperature• set pressure and operating pressure• fluid• environment• material selectionType 526These operating conditions have a significant influence on the product life of safety relief valves.Item Component Commision / start-up Two year operating Fife year operating60 Gasket 1 per valve 1 per valve 2 per valve7 Disc 1 per 5 valves 2 per 5 valves 1 per valve61 Ball 1 per 5 valves 2 per 5 valves 1 per valve57 Ball 1 set per 5 valves 1) 2 sets per 5 valves 1) 1 set per valve 1)5 Nozzle 0 0 1 per 5 valves15 Stainless steel bellows 1 per 5 valves 2 per 5 valves 1 per valve12 Spindle 0 0 1 per 5 valves1 per valve: per each supplied safety valve one piece shall be provided1 per 5 valves: one spare part per 5 supplied equal safety valves1)1 set = 15 piecesRework of seat and discMinor damages on the seating surfaces of nozzle and disc can be repairedby lapping or by machining and successive lapping. For this purpose LESERoffers lapping stamps as well as lapping paste.Lapping stampsOrifice Designation and size Material-No.D + E Lapping stamp no. 3, d 0 18 / orifice D + E 445.1359.0000F + G Lapping stamp no. 4, d 0 23 / orifice F + G 445.1459.0000H Lapping stamp no. 5, d 0 29 / orifice H 445.1559.0000J Lapping stamp no. 6, d 0 37 / orifice J 445.1659.0000K Lapping stamp no. 7, d 0 46 / orifice K 445.1759.0000L + M Lapping stamp no. 8, d 0 60 / orifice L + M 445.1859.0000N Lapping stamp no. 9, d 0 74 / orifice N 445.1959.0000P Lapping stamp no. 10, d 0 92 / orifice P 445.2059.0000Q + R Lapping stamp no. 12, d 0 125 / orifice Q + R 445.2259.0000T Lapping stamp no. 13, d 0 165 / orifice T 445.2359.0000Lapping pasteLapping paste Supplying-lot Designation ApplicationTetraboron paste“WL” F 800Tetraboron paste“WL” F 1200Tubes to 100 g net F grinding-paste 800 Primary lappingTubes to 100 g net F grinding-paste 1200 FinishingLWN 480.01-E01/83
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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
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Type 526Orifice EArticle numbers, d
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Type 526Orifice EPressure temperatu
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Type 526Orifice FArticle numbers, d
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Type 526Orifice FPressure temperatu
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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 and 86: Type 526Orifice TPressure temperatu
Page 87 and 88: Type 526Flange facingsIndication St
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: Type 526Spare parts - Gasket Body /
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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