Folder API Series 526 NEW 7/13/04 4:37 PM Page 1 AAPPII SSeerrii ee ss Series 526 C ATA L O G The Safety Va l v e Folder API Series 526 NEW 7/13/04 4:37 PM Page 2 Type 526 Type 526 Balanced bellows design Type 526 Type 526 Plain lever H3 Open bonnet Folder API Series 526 NEW 7/13/04 4:37 PM Page 3 Flanged Safety Relief Valves · API Series Contents Contents Applications 5 Accessories and Options Caps and Levers 42 Features and Benefits 5 Balanced Bellows 44 Metal Seat 45 Codes and Standards 5 Soft Seal 46 Materials Heating Jacket 48 • Conventional Design 6 Lift Indicator 49 • Balanced Bellows Design 8 DIN Flanges 50 • Sour Gas Service 9 Spare Parts 52 How to order Approvals 59 • Numbering system 10 • Valve Codes Overview 12 Capacity Tables • Capacities US Units STEAM 60 Specifications 13 • Capacities Metric Units STEAM 61 • Orifice D 14 • Capacities US Units AIR 62 • Orifice E 16 • Capacities Metric Units AIR 63 • Orifice F 18 • Capacities US Units WATER 64 • Orifice G 20 • Capacities Metric Units WATER 65 • Orifice H 22 • Orifice J 24 Specification Sheet 66 • Orifice K 26 • Orifice L 28 • Orifice M 30 • Orifice N 32 • Orifice P 34 • Orifice Q 36 • Orifice R 38 • Orifice T 40 Type 526 Cap H2 Type 526 Packed lever H4 LWN 470.01 3 Folder API Series 526 NEW 7/13/04 4:37 PM Page 4 Type Flanged Safety Relief Valves · API Series 526 LESER´s API series 526 is a LESER´s API series 526 has spring loaded pressure relief valve been optimized in close cooperation series, specially designed and manu- with plant engineers and service spe- factured to API 526 and approved cialists, simplifying design with fewer according to ASME (Sec. VIII, Div. 1) components for less down time, fewer the Canadian CRN, the European PED spare parts and lower maintenance standard, the German AD 2000-Merk- costs. blatt A2 and those of many other Extensive testing at the LESER countries, covering requirements from ASME-certified test lab together with end-users, OEM´s and engineering up to date manufacturing processes companies worldwide, thus allowing ensure the reliability of this state of immediate replacement. the art product. 4 LWN 470.02 Folder API Series 526 NEW 7/13/04 4:37 PM Page 5 Flanged Safety Relief Valves · API Series Applications · Features and Benefits · Codes and Standards Applications Features and Benefits Codes and Standards LESER´s API series 526 presents the LESER´s API series 526covers a large LESER´s API series 526complies with simple safe solution for heavy duty variety of types, materials and options the following codes and standards: applications, such as crude oil extrac- to fit any application: ● ASME Section VIII – National Board tion, transportation and processing in certified capacities (single trim for ● Refineries Scope of Design steam, gas and liquid service): ● Chemical industry ● Seven valve sizes from 1” through 8” UV-stamp ● Petrochemical industry ● 14 orifice sizes from D through T ● ASME Section II - materials ● Oil and Gas - Onshore and Offshore ● Materials: WCB, WC6, CF8M and a ● ASME B16.34 and ASME B16.5- ● Oilfields (“Christmas trees”) wide range of material variations for flanging ● Vessels & piping systems critical applications ● API 526 – fourth edition 1995 ● Blow-down systems ● Open or closed bonnet, packed or ● API 520 and 527 ● Storage tank farms plain lifting lever or gastight cap ● NACE MR 0175 ● Optional balanced bellows con- ● ISO 4126 struction for back pressure compen- ● PED 97/23/EC (CE-marking) sation ● CRN, VdTUEV-SV 100, ● Heating jacket available for high vis- AD 2000-Merkblatt A2 cosity fluids ● Others ● Many other options to adjust to var- ious operating conditions Simplified design for “built-in safety” ● Fool-proof design with few parts for built-in safety ● Single trim for steam, gas and liquid for fewer spare parts and easier maintenance ● One-piece spindle reduces friction ● Two-point-guided nozzle for im- proved alignment ● Self draining body avoids residues and reduces corrosion ● Long springs for large pre s s u re ranges Ease of plant design, installation, operation and maintenance ● Reduced number of components for easier and more cost effective main- tenance ● Replaceable nozzle and disc ● Stellited or hardened metal sealing for longer product life ● Optional soft seat for superior tight- ness ● Integral cast support brackets LWN 470.03 5 Folder API Series 526 NEW 7/13/04 4:37 PM Page 6 Type Flanged Safety Relief Valves · API Series 526 Materials – Conventional Design Materials – Conventional Design Standard Service Type 5262 Item Part Name Trim: standard 1 Body SA 216 WCB 5 Nozzle 316L 6 Adjusting ring 316L Hardened 7 Disc stainless steel 8 Guide 316L 9 Bonnet SA 216 WCB 12 Spindle AISI 420 14 Split ring AISI 420 16/17 Spring plate 12L13 Adjusting screw AISI 430F 18 with bushing PTFE 19 Lock nut Steel 22 Lift stop 316L 40 Cap H2 12L13 High temperature 54 Spring alloy steel 55 Stud B7 56 Nut 2H 60 Gasket Graphite / 316L Hardened 61 Ball stainless steel 69 Needle bearing 316L 73 Lock screw 316L Remark Nozzles for flange classes 600 and higher are sup- plied with stellited sealing surfaces as a stan-dard for improved wear resistance. 6 LWN 470.04 Folder API Series 526 NEW 7/13/04 4:37 PM Page 7 Flanged Safety Relief Valves · API Series Material Options – Conventional Design Material Options – Conventional Design Corrosive Service1Type 5264 Trim: Hastelloy® Trim: Monel® Trim: Duplex® Item Part Name Trim: Standard Grade HA Grade MA Grade DA 1 Body SA 351 CF8M SA 351 CF8M SA 351 CF8M SA 351 CF8M 5 Nozzle 316L Hastelloy®C Monel® Duplex® 6 Adjusting ring 316L 316L 316L 316L 7 Disc 316L stellited Hastelloy®C Monel® Duplex® 8 Guide 316L 316L 316L 316L SA 351 CF8M or SA 351 CF8M or SA 351 CF8M or SA 351 CF8M or 9 Bonnet SA 479 316Ti SA 479 316Ti SA 479 316Ti SA 479 316Ti 12 Spindle AISI 420 AISI 420 AISI 420 AISI 420 14 Split ring 316L 316L 316L 316L 16 / 17 Spring plate 316L 316L 316L 316L Adjusting screw 316L tenifer 316L tenifer 316L tenifer 316L tenifer 18 with bushing PTFE PTFE PTFE PTFE 19 Lock nut 316L 316L 316L 316L 22 Lift stop 316L 316L 316L 316L 40 Cap H2 316L 316L 316L 316L 54 Spring Stainless steel Stainless steel Stainless steel Stainless steel 55 Stud B8M B8M B8M B8M 56 Nut 8M 8M 8M 8M 60 Gasket Graphite / 316 L Graphite / 316L Graphite / 316L Graphite / 316L 61 Ball 316 316 316 316 69 Needle bearing 316L 316L 316L 316L 73 Lock screw 316L 316L 316L 316L Notes: 1Materials in blue: variations from standard bill of material 2316L stellited for flange classes 900 and higher LWN 470.05 7 Folder API Series 526 NEW 7/13/04 4:37 PM Page 8 Type Flanged Safety Relief Valves · API Series 526 Materials – Balanced Bellows Design Materials – Balanced Bellows Design Standard High Te m p e r a t u re Service Service Type 5262 Type 5267 Item Part Name Trim: standard Trim: standard 1 Body SA 216 WCB SA 217 WC6 5 Nozzle 316L 316L stellited 6 Adjusting ring 316L 316L Hardened Hardened 7 Disc stainless steel stainless steel 8 Guide 316L 316L 9 Bonnet SA 216 WCB SA 217 WC6 11 Bonnet spacer1 SA 479 316L SA 479 316L 12 Spindle AISI 420 AISI 420 14 Split ring 316L 316L 15 Bellows 316L 316L 16/17 Spring plate 12L13 12L13 Adjusting screw AISI 430F AISI 430F 18 with bushing PTFE PTFE 19 Lock nut Steel Steel 22 Lift stop 316L 316L 40 Cap H2 12L13 12L13 High temperature High temperature 54 Spring alloy steel alloy steel 55 Stud B8M B16 56 Nut 8M 7M 60 Gasket Graphite / 316L Graphite / 316L Hardened Hardened 61 Ball stainless steel stainless steel 69 Needle bearing 316L 316L 73 Lock screw 8M 8M Note: 1Orifice T without bonnet spacer Remark Nozzles for flange classes 600 and higher are sup- plied with stellited sealing surfaces as a stan-dard for improved wear resistance. 8 LWN 470.06 Folder API Series 526 NEW 7/13/04 4:37 PM Page 9 Flanged Safety Relief Valves · API Series Material Options – Balanced Bellows Design · Sour Gas Service (H S) 2 Material Options – Balanced Bellows Design Corrosive Service1Type 5264 Trim: Hastelloy® Trim: Monel® Trim: Duplex® Item Part Name Trim: Standard Grade HB Grade MB Grade DB 1 Body SA 351 CF8M SA 351 CF8M SA 351 CF8M SA 351 CF8M 5 Nozzle 316L2 Hastelloy®C Monel® Duplex® 6 Adjusting ring 316L 316L 316L 316L 7 Disc 316L stellited Hastelloy®C Monel® Duplex® 8 Guide 316L 316L 316L 316L SA 351 CF8M or SA 351 CF8M or SA 351 CF8M or SA 351 CF8M or 9 Bonnet SA 479 316Ti SA 479 316Ti SA 479 316Ti SA 479 316Ti 11 Bonnet spacer SA 479 316L SA 479 316L SA 479 316L SA 479 316L 12 Spindle AISI 420 AISI 420 AISI 420 AISI 420 14 Split ring 316L 316L 316L 316L 15 Bellows 316L Hastelloy® Monel® Duplex® 16 / 17 Spring plate 316L 316L 316L 316L Adjusting screw 316L tenifer 316L tenifer 316L tenifer 316L tenifer 18 with bushing PTFE PTFE PTFE PTFE 19 Lock nut 316L 316L 316L 316L 22 Lift stop 316L 316L 316L 316L 40 Cap H2 316L 316L 316L 316L 54 Spring Stainless steel Stainless steel Stainless steel Stainless steel 55 Stud B8M B8M B8M B8M 56 Nut 8M 8M 8M 8M 60 Gasket Graphite / 316L Graphite / 316L Graphite / 316L Graphite / 316L 61 Ball 3 1 6 3 1 6 3 1 6 3 1 6 69 Needle bearing 316L 316L 316L 316L 73 Lock screw 316L 316L 316L 316L Notes: 1Materials in blue: variations from standard bill of material 2316L stellited for flange classes 900 and higher Sour Gas Service (H S) 2 NACE MR 0175 NACE MR 0175 defines two levels for the L E S E R’s API series 526 fulfills the sour gas service of safety relief valves: requirements with the standard bill of materials. Only very few modifications Level 1: for compliance of wetted parts according to the table below are rec- in closed position ommended. Material test reports and hardness test certificates for pro-duct Level 2: for compliance of wetted parts wetted parts are available on request. in open position. Modification Level 1 Level 2 Type Body Material Material Information OptionCode Material Information Option Code Disc material: Disc material: 5262 SA 216 WCB J25 J25 316L stellited 316L stellited1 Use standard bill Use standard bill 5264 SA 351 CF8M – – of materials of materials1 Note: 1Spindle material 316L or stainless steel bellows are available on request. LWN 470.07 9 Folder API Series 526 NEW 7/13/04 4:38 PM Page 10 Type Flanged Safety Relief Valves · API Series 526 How to Order – Numbering System How to Order Numbering System 1 2 3 Article No. Set Pressure Connections Please state unit (in gauge)! 1 2 3 4 Flanges acc. to Option Code 526 2 . 001 2 Please do not exceed pressure range mentioned in the spring ANSI B16.5 not required charts. 1. Valve Type Please refer to DIN EN 1092-1 / 526 DIN 2501 table on page 50–51. 2. Material Code please state Other 2 – body+bonnet material WCB in writing 4 – body+bonnet material CF8M 7 – body+bonnet material WC6 3. Valve Code Identifies valve size, body material, orifice and flange class. Refer to table “Va l v e Codes Overview” page 12. 4. Code for Lifting Device 2 –screwed cap H2 3 – plain lever H3 4 – packed lever H4 5 –plain lever H3 with open bonnet 5262.0012 100 psig Article No. Set Pressure Connections 10 LWN 470.08