Valve Type 441-458

Valve Type 441-458

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Manufacturer: Leser

DN 20-DN 400


  • High capacity related to the safety valve size
  • High adaptability
  • Available with bellow
  • Approved by all important approval organisations worldwide

High Performance Safety Valves are the ultimate solution for all industrial applications for steam, gas and liquid.

Typical applications:

  • Protection of chemical processes and equipment (e.g. distillation columns)
  • Heat exchangers
  • Low and medium pressure steam
  • Blowers and turbo compressors
  • Low pressure steam at big power stations
  • Capacities beyond the limits of API and Series 441

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