LESER Compact Performance Safety Valve Type 459

Compact PerformanceType 459 IC

Safetys valve for protection of medium capacities. Technical data

  • Matching selection of threaded and flanged connections with a delivery time of 2 weeks
  • CE_Europa_schwarz
  • VdTUEV
  • ASME_UV_USA_schwarz
  • EAC_Russland_schwarz
  • TS_Logo_China_schwarz
  • CRN_Kanada_schwarz
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  • Bureau-Veritas
  • DNV
  • RINA-1861
  • Vogel
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  • Korean-Register
  • Class-NK

Applications & Industries

  • Chemistry
  • Oil & Gas
  • Petrochemical
  • Energy
  • Technical gases
  • LNG & LPG
  • Pharma
  • Food and beverages
  • Shipbuilding

The optimal solution for:

  • Compressors and pumps
  • Technical gases and CO2 plants
  • LPG/LNG storage tanks, transporters (ship, truck, etc.)
  • Pressure vessels and piping systems carrying vapors, gases and liquids
  • Refrigeration and oxygen applications
  • Thermal expansion


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Technical Features Type 459 IC

Set pressure (according to ASME) 0.2 - 650 bar | 2.9 - 9,425 psig
Temperature (according to ASME) -196 to 538 °C | -321 to 1000 °F
Capacity C+ to F
Connections DIN EN 1092 G/R: NPS 1/2 to NPS 1 1/2 | DN 15 - DN 40
Connections ASME B16.5 NPT: NPS 1/2 to NPS 1 1/2 | NPS 1/2 to NPS 1 1/2
Flange class Inlet DIN EN 1092 PN 40 - PN 400
Flange class Inlet ASME B16.5 Class 150 - Class 2500
Body material SA 216 WCB, SA 351 CF8M, SA 352 LCB, SA 351 CF3M, SA 995 Gr 4A CD3MN (Duplex), SA 494 M35-1 (Monel), SA 494 CX2MW (Hastelloy)
Narrowest flow diameter d₀ 6 - 17.5 mm | 0.236 - 0.689 in
Narrowest flow area A₀ 28.28 - 241 mm² | 0.044 - 0.374 in²
Bellows material Stainless steel, INCONEL® 625 LCF
Seat gasket Metallic, soft sealing

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