LESER is a medium-sized, family-owned company, backed up by almost 200 years of tradition. LESER is a headquartered in Hamburg/Germany and maintains a state-of-the-artfactory. The core business is the safety of pressurized facilities. LESER sells, produces and develops safety valve for all industrial applications. Many years of experience, coupled with state-of-the-art products and services, enables LESER to offer competent solutions to the needs of worldwide customers. LESER follows an in-house manufacturing philosophy and guarantees a high standard quality, which has allowed LESER to become and industry leader for safety valves world-wide.

API FLANGED SAFETY RELIEF VALVE:

  • 100% Compatibility to API 526
  • Single Trim (identical internal parts for steam/gas/liquids) allows economical maintenance
  • Longer valve lifespan due to hardened disc and (partially) stellited seat
  • Longer lifespan of optional bellows through integrated shielding

COMPACT PERFORMANCE SAFETY RELIEF VALVE:

  • Compact design with high capacity relative to valve size
  • Large selection of possible connections and seals for different operating conditions
  • Space-saving horizontal installation possible
  • Single Trim (identical internal parts for steam/gas/liquids) allows economical maintenance
  • Longer lifespan of optional bellows through integrated shielding

HIGH EFFICIENCY PILOT OPERATED SAFETY VALVE:

  • Pilot Operated Safety Valve
  • Piping between the pilot and main valves is integrated into the cover to prevent damage and freezing
  • Integrated Backflow Preventer as standard part
  • Higher capacity than comparable size with extra orifices
  • Supplementary Loading System
  • Higher operating pressures are possible
  • Closing pressure difference of up to -3 %; opening process is independent of back pressure
  • Functional test and valve adjustment possible during operation
  • Max. 0.1 sec. for valve to open completely

HIGH PERFORMANCE FLANGED SAFETY VALVE:

  • High blow-off capacity in comparison to valve size
  • Universal valve for many applications up to DN 400 / 16″ or 300 bar / 4350 psig
  • Simple and robust construction
  • Single trim (identical internal parts for steam/gas/liquid) allows economical maintenance
  • Large selection of options for different operating conditions