High_Performance_Catalog_1_EN
148Pages

André Ramseyer AG Flamatt, Switzerland info@ramseyer.ch LESER UK Bristol, Great Britain sales@leser.co.uk High Performance 1 LESER worldwide Hong Kong LESER Shenzen, China sales@leserchina.com High Performance Flanged Safety Relief Valves Series 441 Series XXL Series 444 LESER Polska Poznan, Poland leser@leser.pl LESER S.A.R.L. Toulouse, France contact@leser.fr LESER LLC Charlotte (NC), USA salesus@leser.com LESER LTDA. Rio de Janeiro, Brazil leser.vendas@leser.com.br LESER representatives LESER LLP Singapore sales@leser.com.sg LESER Office Middle East Bahrain gopal.n@leser.com FAINGER LESER Valves Mumbai, India info@fainger.com 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: sales@leser.com www.leser.com The-Safety-Valve.com E

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

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...

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...

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...

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...

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...

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 ≤...

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...

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...