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Accessories and OptionsHigh temperature equipmentFor fluid temperatures higher than 400 °C / 752 °F high temperature equipment is necessary to protect the inner parts andthe spring against inadmissible influence of temperature. The maximum inlet temperature is 550 °C / 1022 °F. The equipmentshown is only fitted in Type 5267. For all other Types an open bonnet and a stainless steel bellows is necessary for fluid temperaturesexceeding 400 °C / 752 °F up to max. 450 °C / 842 °F.SpecificationType 5267Design54955561115715Option codeJ88Operating conditionsTemperature limits [°C] > 400 fluid temperature[°F]max. [°C]max. [°F]> 752 fluid temperature550 inlet temperature1022 inlet temperatureMaterialsHigh temperature equipmentItemComponentOptions1 Body5 Nozzle7 Disc9 Bonnet open11 Cooling spool15 Bellows54 Spring55 Studs56 Nuts1.7357WC61.4404316L1.4404 stellited316L stellited1.0619WCB1.4404316L1.4571316L1.7102, 1.8159High temperature alloy steel1.7709B161.72587M99/14 LWN 480.01-E
Accessories and OptionsLift indicatorThe lift indicator is a useful device that can be used in process control to monitorthe operating status of a safety valve.94To detect lifting, LESER provides a special lifting device H4 incorporating a proximityswitch (see drawing right).The lift indicator will detect a safety valve lift equal to or more than 1 mm / 0.04 in,which may be the result of overpressure or of operation of the lifting device.LESER provides inductive DC proximity switches, type DIN EN 60947-5-6 (NAMUR)using two-wire technology. These intrinsically safe proximity switches can be used inexplosion hazard area zone 0 ( II 1 D Ex iaD 20 T6). Other types of proximity switchmay be used. If a technical specification is supplied along with the type of connectionthread LESER can verify compatibility.For technical details of proximity switch refer to manufacturers homepage:www.pepperl-fuchs.com.Packed lever H4 or bolted H6For assembly and adjustment refer to LESER works standard LWN 323.03-E.AvailabilityItem Component Option code9 Bonnet with adaptor for lift indicator J3840 Lifting device H4 with adaptor for proximity switch M18 x 1 [mm] J3994Lift indicatorM18 x 1, used type = PEPPERL+FUCHS NJ5-18GK-NJ93Operating chartA, closed position B, open positionThe lift indicator is positioned in front of the couplingor control sleeve when the safety valve is closed.When the safety valve opens or is lifted(in both cases at least 1 mm / 0,04 inch),the lift indicator changes its signal. The signal alsochanges if the lift indicator accidentally becomesloosened or unscrewed (fail safe).Valve lift min.1 mm / 0,04 inchSignalHighClosed positionOpen positionLowValve openstimeOptionsLWN 480.01-E99/15
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APIFlanged Safety Relief ValvesSeri
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ContentsChapter/PageGeneral 00/01Ap
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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
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Type 526Orifice GPressure temperatu
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Type 526Orifice HArticle numbers, d
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Type 526Orifice HPressure temperatu
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Type 526Orifice JArticle numbers, d
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Type 526Orifice JPressure temperatu
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Type 526Orifice KArticle numbers, d
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Type 526Orifice KPressure temperatu
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Type 526Orifice LArticle numbers, d
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Type 526Orifice LPressure temperatu
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Type 526Orifice MArticle numbers, d
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Type 526Orifice MPressure temperatu
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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 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: Accessories and OptionsBalanced bel
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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