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          With more than 800 employees, LESER is the largest manufacturer of safety valves in Europe and a leader in its market worldwide.
          LESER safety valves are used by leading companies in industries such as chemical, petrochemical, industrial gases, oil and gas production, and machine building, as well as the food and pharmaceutical industry.
         LESER offers spring-loaded and pilot-operated safety valves for all industrial applications according to PED and ASME VIII as well as application-based solutions for special requirements.
         LESER safety valves are developed for the international market at our headquarters in Hamburg / Germany and manufactured at our modern factory in Hohenwestedt / Germany. In addition, LESER India produces safety valves for the local market.
         Eight subsidiaries in Europe, America, the Middle East, and Asia, as well as authorized and trained representatives in over 80 countries guarantee competent consulting and quick, reliable delivery.
SERIES 526
Product Features
  • Design fully in accordance with API 526 for easy interchangeability
  • Complete API 526 range: valve sizes 1" through 8", orifice D through T
  • Materials: WCB, WCC, CF8M, WC6, LCB, LCC, and a wide range of special materials to fulfill the requirements of critical applications
  • Special B3 design for high back pressure applications and material requirements far beyond API Standard
  • Fool proof design with fewer parts for built-in safety - Integral cast support brackets for easy handling and safe installation
  • Open or closed bonnet, packed or plain lifting lever or gastight cap
  • Flanged connections according ASME and DIN guarantee a worldwide applicability
  • One design and spring (single trim) for steam, gas and liquidapplications reduces the number of spare parts and 'Product ensureslow cost maintenance management
  • One-piece spindle reduces friction which leads to high operation accuracy
  • Self-draining body design, avoids residues and reduces corrosion
  • Horizontal installation
SERIES 441
Product Features
LESERs High Performance Safety Valves Offer a large variety of types, materials and options to suit any application:
  • 14 valve sizes from DN 20 to DN 400 – 3/4" to 16" provide a high connectivity to the application
  • Inlet pressure ratings PN 16 to PN 400 / class 150 to class 2500 to fit all required design pressures
  • Orifice sizes from E to > 3 x T cover all capacity requirements
  • Large variety of body materials; e.g.
    - 0.6025 / grey iron
    - 0.7043 / ductile iron
    - 1.0619 / WCB
    - 1.4408 / CF8M
    - 1.7357 / WCB
SERIES 442
Product Features
LESERs High Performance Safety Valves Offer a large variety of types, materials and options to suit any application:
  • 14 valve sizes from DN 20 to DN 400 – 3/4" to 16" provide a high connectivity to the application
  • Inlet pressure ratings PN 16 to PN 400 / class 150 to 2500 to fit all required design pressures
  • Orifice sizes from E to > 3 x T cover all capacity requirements
  • Large variety of body materials; e.g.
    - 0.6025 / grey iron
    - 0.7043 / ductile iron
    - 1.0619 / WCB
    - 1.4408 / CF8M
    - 1.7357 / WCB
 
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