INTRODUCTION:

HIGH PERFORMANCE

TYPE 441, 442 DIN

Safety valves from the High Performance product group offer especially high capacity for their size.  With a large quantity of nominal diameters (DN), pressure ranges and product options, they have proven themselves as a universal safety valve for many applications.

INDUSTRIES

• Chemical Industry
• Petrochemical Industry
• Power
• Technical Gases
• Food and Beverage Industry
• Pharmaceutical Industry

LESERs High Performance Safety Valves 

• Are designed to meet all industrial applications. 

• Open rapidly with an overpressure of 5 % to the full design lift. 

• Are used particularly for vapours and gases where the maximum mass flow has to be discharged rapidly. 

• Have a maximum blowdown of minus 10 % for steam/ gas service and minus 20 % for liquid service. 

• Are one of the best selling spring loaded safety valve worldwide. 

• Are developed in a close cooperation with plant engineers and service specialists. 

• Serve for protection of processes and equipment. 

• Are approved by all important approval organisations worldwide which ensures the worldwide applicability e.g.: 

  • European Community: CE-marking acc. to Pressure Equipment Directive (PED) 97/23/EC resp. 2014/68/EU and EN ISO 4126-1 

  • USA: UV-stamp acc. to ASME Section VIII Division 1, National Board certified capacities  

  • Germany: VdTÜV approval acc. to PED, EN ISO 4126-1, TÜV SV 100 and AD 2000-Merkblatt A2 

  • Canada: Canadian Registration Number acc. to the requirements of particular provinces 

  • China: AQSIQ based on the approval acc. to ASME Section VIII Division 1 and AD 2000-Merkblatt A2 

  • Eurasian Custom Union: Approval acc. to Eurasian Custom Union (EAC - Eurasian Conformity) 

Furthermore, all LESER High Performance safety valves are designed, marked, produced and approved acc. to the requirements of the following regulations (directives, codes, rules and standards). 

EN ISO 4126-7, EN 12266-1/-2, EN 1092 Teil I and II flanging, ASME PTC 25, ASME-Code Sec. II, ASME B16.34 and ASME B16.5-flanging, API Std. 527, API RP 576, AD 2000-Merkblatt A4, AD 2000-Merkblatt HP0.

Sample types:

4412.4532, 4412.4542, 4422.4545, 4422.4525, 4412.4524, 4412.4554, 4412.4534, 4412.4544, 4412.4564