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LESER GmbH & Co. KG
High_Performance_Catalog_1_EN

High_Performance_Catalog_1_EN

Product catalog summary

Overview: The document is a catalog for LESER's High Performance Safety Valves, detailing various series and types of valves designed for industrial applications. It includes specifications, materials, ordering information, and approvals.

Main Sections:

Specifications: The catalog covers different series of safety valves, including Series 441, XXL, 444, and 458. Each series is designed for specific applications, with details on valve sizes, set pressures, and flange standards.
Materials: The valves are made from various materials such as grey iron, ductile iron, carbon steel, and stainless steel, selected based on application requirements.
Ordering Information: Includes a numbering system and article numbers for easy ordering. It also provides information on available options and spare parts.
Pressure and Temperature Ratings: Detailed ratings are provided in both metric and US units, covering a wide range of operating conditions.
Approvals: The valves are approved by major international organizations, ensuring compliance with global standards such as CE-marking, ASME, and VdTÜV.
Applications: The valves are suitable for various industrial applications, including chemical processes, steam generation, and desalination plants.
Design Features: Highlights include high capacity, adaptability, and a favorable price/performance ratio. The valves are designed for rapid opening and high accuracy, with options for customization.

Key Features:

High capacity and adaptability for diverse industrial applications.
Compliance with international standards for global applicability.
Customizable options to meet specific application needs.
Wide range of materials and sizes to suit different pressures and temperatures.

Specifications: The document provides detailed specifications for Type 444 DIN safety relief valves, including materials, dimensions, and pressure ratings. The valves are made from 1.4404 (316L) stainless steel and are available in various sizes with specific orifice diameters and areas. The set pressure ranges from 0.1 to 16 barg (1.5 to 232 psig), and the temperature range is from -45°C to +200°C (-49°F to +392°F).

Procedures: Ordering procedures are outlined with a numbering system that includes valve type, material code, and valve code. The document also provides instructions for selecting spare parts and available options, such as lifting aids and lift indicators.

Standards and Approvals: The valves comply with various international standards, including DIN EN ISO 4126-1, AD 2000-Merkblatt A2, and ASME Section VIII. Approvals are listed for Europe, Germany, the United States, Canada, China, Russia, Kazakhstan, and Belarus.

Recommendations: Recommendations include not exceeding the pressure range defined in the spring charts and selecting appropriate documentation for inspections and tests. The document also advises on flange drillings and facings according to DIN EN 1092 and ASME B16.5 standards.

Capacities: Capacities for steam and air are provided based on set pressure plus 10% overpressure. Capacities are detailed in both metric and US units, with specific values for different orifice sizes and pressures.

Diagrams and Tables: The document includes diagrams for evaluating the ratio of lift to flow diameter and the coefficient of discharge. Tables provide detailed information on dimensions, weights, and pressure-temperature ratings for both metric and US units.

Specifications: The document outlines the hardness standards according to DIN EN ISO 6506-1 and 6508-1, specifying that Rockwell hardness values below 20 HRC are not permissible.

Materials and Components: Various series of components such as Series 441, XXL, and 458 are detailed with materials like stainless steel (1.4404, 316L) and stellited options for enhanced durability. Soft seal solutions are available with materials like Neoprene, Buna-N, Viton, and Kalrez, each with specific temperature and application ranges.

Design and Options: The document provides options for metal and soft seal discs, balanced bellows, and high-temperature equipment. Balanced bellows are used to compensate for back pressure and seal the bonnet from the outlet chamber, with materials like Hastelloy and Inconel available.

Soft Seal Selection: A comprehensive table lists various soft seal materials, their temperature limits, and suitable applications, such as Neoprene for water-based solvents and Viton for high-temperature services.

Pressure and Temperature Ratings: The document includes pressure and temperature ratings for different series and materials, ensuring compatibility with specific operational conditions.

Accessories and Options: Additional options include elastomer bellows for cost-effective sealing, heating jackets for high-temperature applications, and bull race discs to prevent damage during maintenance.

Installation and Maintenance: Conversion kits are available for upgrading to balanced bellows designs, and detailed installation instructions are provided for various components.

Application and Design: The document discusses the use of heating jackets for safety valves in systems handling viscous, sticky, or crystallizing media. The heating jacket, constructed with a welded design, allows heating media like steam or heat transfer oil to pass through, preventing sticking of the spindle and moving parts. For valves with balanced bellows, an additional heating jacket is fitted, connected by tubing.

Specifications of the Heating Jacket: Operating data is provided on a separate nameplate. Slip-on flanges are used for better alignment. The document lists dimensions and operating conditions for various series and sizes, both in metric and US units.

O-ring Damper: The O-ring damper is designed to suppress oscillations in safety valves, preventing issues like chatter and flutter. It stabilizes valve function and is compatible with various designs, including conventional and balanced bellows. The damper is available in Cap H2 and Packed lever H4 designs, with materials specified for each component.

Lift Indicator: A lift indicator is used to monitor the operating status of a safety valve, detecting lifts of 1 mm or more. It uses inductive DC proximity switches and is suitable for explosion hazard areas. Technical details and assembly instructions are provided.

Lift Restriction: Lift restrictions may be necessary to adjust the discharge capacity of a safety valve. The document outlines methods for determining restricted lift and the requirements according to various codes and standards. Options for lift restriction include bush and gag designs.

Availability and Contact Information: The document provides availability details for various series and contact information for LESER offices worldwide.

Catalog excerpts

André Ramseyer AG Flamatt, Switzerland [email protected] LESER UK Bristol, Great Britain [email protected] High Performance 1 LESER worldwide Hong Kong LESER Shenzen, China [email protected] High Performance Flanged Safety Relief Valves Series 441 Series XXL Series 444 LESER Polska Poznan, Poland [email protected] LESER S.A.R.L. Toulouse, France [email protected] LESER LLC Charlotte (NC), USA [email protected] LESER LTDA. Rio de Janeiro, Brazil [email protected] LESER representatives LESER LLP Singapore [email protected] LESER Office Middle East Bahrain [email protected] FAINGER LESER Valves Mumbai, India [email protected] LESER stock and local assembly CATALOG 1 High Performance Catalog 1 Edition May 2012 / 2.000 0777.5465 The-Safety-Valve.com LESER GmbH & Co. KG 20537 Hamburg, Wendenstr. 133-135 20506 Hamburg, P.O. Box 26 16 51 Fon +49 (40) 251 65-100 Fax +49 (40) 251 65-500 E-Mail: [email protected] www.leser.com The-Safety-Valve.com E

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Product Range LESER Safety Valves for every industrial application High Performance Compact Performance Series 441 Type 441, 442 DIN Type 441, 442 ANSI API Series XXL Type 441, 442 XXL High Efficiency Clean Service H 2 SO 4 HNO 3 NH 3 HCL Critical Service Series 444 Type 444 DIN Type 444 ANSI Series 441 Full nozzle Type 441, 442 Full nozzle DIN Modulate Action Type 441, 442 Full nozzle ANSI Series 458 Best Availability Type 455, 456 Type 457, 458 to refer lease ormance P Perf High atalog 2 C

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General Type 441, 442 DIN DN 20, 40, 50 Set pressure 0.1 – 40 bar, 1.5 – 580 psig Flanges according to DIN EN 1092 Frontview 441 ANSI H4 4c Type 441, 442 ANSI Valve size 1" – 4" Set pressure 0.1 – 51 bar, 1.5 – 740 psig Flanges according to ASME B16.5 FV 441 FN H2 4c Type 441, 442 XXL DN 200 – 400, 8" – 16" Set pressure 0.2 – 25 bar, 3 – 360 psig Flanges according to DIN EN 1092 and ASME B16.5 Frontview 441 XXL H4 4c Type 444 DIN DN 25 – 80 Set pressure 0.1 – 16 bar, 1.5 – 232 psig Flanges according to DIN EN 1092 Type 444 ANSI Valve size 1" – 3" Set pressure 0.1 – 16 bar, 1.5 – 232 psig Flanges...

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Contents Overview Chapter/Page General 00/05 How to use: Signs and symbols, Flange drillings and facings 00/07 How to use: Determination of coefficient of discharge Kdr / w Pressure temperature ratings • Metric Units • US Units Flange drillings and facings Order information – Spare parts Available options Approvals Capacities • Steam [Metric Units + US Units] • Air [Metric Units + US Units] • Water [Metric Units + US Units] 00/09 LESER Effective Orifice LEOS/G 00/11 LESER Effective Orifice LEOL 00/12 Sour gas service 02/10 02/11 00/08 How to use: Capacity sheets 02/06 02/08 Dimensions and weights...

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Contents Type 444 DIN 04/01 04/02 04/04 04/06 Dimensions and weights • Metric Units + US Units 04/07 Pressure temperature ratings • Metric Units + US Units 04/08 Flange drillings and facings Order information – Spare parts Available options Approvals Capacities • Steam [Metric Units + US Units] • Air [Metric Units + US Units] • Water [Metric Units + US Units] 04/09 04/10 04/11 04/12 04/13 04/14 04/15 Determination of coefficient of discharge Kdr / w Type 444 ANSI 04/16 05/01 Materials • Conventional design 05/02 How to order • Numbering system • Article numbers 05/04 05/06 Dimensions and weights...

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General General Information LESER – High Performance Safety Valves The High Performance product group represents 3 High capacity related to the safety valve size 3 High adaptability 3 Excellent price / performance ratio LESERs High Performance Safety Valves Are designed to meet all industrial applications. Open rapidly with an overpressure of 5 % to the full design lift. • re used particularly for vapours and gases where A the maximum mass flow has to be discharged rapidly. • ave a maximum blowdown of minus 10 % for steam/ H gas service and minus 20 % for liquid service. • re one of the best...

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General General Information Applications General Design Features LESER – High Performance Safety Valves LESERs High Performance Safety Valves Are the ultimate solution for all industrial applications for steam, gas and liquid. Offer a large variety of types, materials and options to suit any application: Typical applications for LESER High Performance Safety Valves are: valve sizes from DN 20 to DN 400 – 3/4" to 16" provide a high connectivity to the application • nlet pressure ratings PN 16 to PN 400 / class 150 to I class 2500 to fit all required design pressures • Orifice sizes from E to >...

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How to find the right Product Group Yes High Efficiency Yes Clean Service Yes Critical Service Medium controlled High operating to set pressure ratio, high backpressure or low total height? No Clean Service application? No Critical Service / highly corrosive application? Yes API No Steam, gas and liquid application with low capacity in relation to the valve size? Yes Modulate Action Spring loaded API specified application? Safety Valves No No Orifice ≥ F High Performance Required Orifice letter? Additional components beyond safety valves 00/03 Yes Best Availability Bursting disc Orifice ≤ F...

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General Valve finder How to find the right Safety Valve DIN EN 1092 ASME B16.5 Flange standard? No Full nozzle-design required? Type 441 DIN Type 442 DIN Type 441 ANSI Type 442 ANSI DIN EN 1092 ASME B16.5 Yes Type 441 Full nozzle DIN Type 442 Full nozzle DIN Type 441 Full nozzle ANSI Type 442 Full nozzle ANSI ≤ PN40 / CL300 ≥ PN63 / ≥ CL600 Flange rating? Semi nozzle up to 100 bar / 1450 psig Full nozzle up to 400 bar / 5800 psig ≤ DN 150 / 6" ≥ DN 200 / 8" Valve size, inlet? Serie 458 Type 455 Type 456 Type 457 Type 458 Type 441 XXL Type 442 XXL General industry Stainless steel OEM-application?...

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General Valve selection Temperature range Type acc. to DIN EN 441, 442 DIN 441, 442 ANSI 441, 442 XXL 444 DIN 444 ANSI 441, 442 441, 442 Full nozzle Full nozzle DIN ANSI 455, 456 457, 458 -270 -270 -270 -196 -45 -45 -270 -270 -85 450 450 550 200 200 450 450 550 550 min. [°F] -454 -454 -321 -49 -49 -454 -454 -121 -454 max. [°F] acc. to ASME min. [°C] max. [°C] 842 842 1022 392 392 842 842 1022 1022 -268 min. [°C] -268 -268 -184 -45 -45 -268 -268 -129 max. [°C] 538 538 427 200 200 538 538 538 538 min. [°F] -450 -450 -300 -49 -49 -450 -450 -20 -450 max. [°F] 1000 1000 800 392 392 1000 1000 1000...

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High_Performance_Catalog_1_EN

High_Performance_Catalog_1_EN

Catalog excerpts

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