LESER High Performance Safety Valve Type 457 458

High PerformanceType 457, 458

Full lift safety valve with nozzle . Technical data

  • Delivery times: 2 weeks for standard configurations
  • Carbon steel, high-temperature carbon steel and cast stainless steel

 

  • CE_Europa_schwarz
  • ASME_UV_USA_schwarz
  • EAC_Russland_schwarz
  • TS_Logo_China_schwarz
  • UKCA_Grossbritanien_schwarz

Applications & Industries

The Types 457 / 458 for chemical, petrochemical, energy, technical gases and general industry in heavy duty applications up to 300 barg

The optimal solution for:

  • High capacity at high pressures
  • When Nozzle is prescribed
  • Easy maintenance
EVONIK FELUWA NEUMANESSER

Technical features Type 457, 458

Set pressure(according to CE) 2.5 - 300 bar | 36 - 4,350 psig
Set pressure (according to ASME) 2.5 - 300 bar | 35 - 4,350 psig
Temperature(according to CE) -85 to 550 °C | -121 to 1,022 °F
Temperature(according to ASME) -29 to 538 °C | -20 to 1,000 °F
Capacity orifice E to Q
Connections DIN EN 1092 DN 25 - DN 150
Connections ASME B16.5 NPS 1 to NPS 6
Flange class Inlet DIN EN 1092 PN 16 - PN 250
Flange class Inlet ASME B16.5 Class 150 - Class 1500
Body material 1.0619, 1.4581, 1.7357 | SA 216 WCB, SA 351 CF10M, SA 217 WC6
Narrowest flow diameter d₀ 15 - 110 mm | 0.59 - 4.33 in
Narrowest flow area A₀ 177 - 9,503 mm² | 0.274 - 14.730 in²
Bellows material Stainless steel
Seat gasket Metallic, Sealing plate , Soft sealing
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Sizing and selection

Sizing and selection of your LESER Safety valve with VALVESTAR® - The Sizing Program

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