LESER - High Performance Safety Valve
LESER - High Performance Safety Valve
Model: 441,442 / 441,442 XXL / 444 / 441,442 Full Nozzle / 455 / 456 / 457 / 458
Body Material: Cast Iron / Ductile Iron / WCB / CF8M / 316Ti / 316L / WC6 / CF10M
End Connection: RF Flanged End

NOTE : For different valve specifications, please click 'INQUIRY ME' button located below.

LESER´s High Performance Safety Valves • Are designed to meet all industrial applications. • Open rapidly with an overpressure of 5 % to the full design lift. • Are used particularly for vapours and gases where the maximum mass flow has to be discharged rapidly. • Have a maximum blowdown of minus 10 % for steam/gas service and minus 20 % for liquid service. • Are one of the best selling spring loaded safety valve worldwide. • Are developed in a close cooperation with plant engineers and service specialists. • Serve for protection of processes and equipment. • Are approved by all important approval organisations worldwide which ensures the worldwide applicability

 

ADVANTAGES

  • High blow-off capacity in comparison to valve size
  • Universal valve for many applications up to DN 400 / 16" or 300 bar / 4350 psig
  • Proven thousands of times
  • Outstanding value for the price
  • Simple and robust construction
  • Single trim (identical internal parts for steam/gas/liquid) allows economical maintenance
  • Large selection of options for different operating conditions
  • Quick delivery (2 - 4 weeks from the factory or next day from local warehouse)
  • Can be equipped with additional supplementary loading system or bursting discs

TECHNICAL SPECIFICATIONS

Nominal Diameter at Inlet DN 20 - DN 400 | 3/4" - 16"
Actual Orifice Diameter d0 18 mm - 295 mm | 0.71 in - 11.61 in
Actual Orifice Area A0 254 mm² - 68349 mm² | 0.394 in² - 105.942 in²
Pressure 0.1 bar - 300 bar | 1.5 psig - 4,350 psig
Temperature (in accordance with DIN EN) -270 °C to 550 °C | -454 °F to 1,022 °F
Body Material 0.6025, 0.7043, 1.0619, 1.4408, 1.0460 / 1.0425, 1.4571, 1.4404, 1.4581, 1.7357 | Cast iron, Ductile Gr. 60-40-18, SA 216 WCB, SA 351 CF8M, carbon steel, 316Ti, SA 479 316L, SA 351 CF10M , SA 217 WC6
Valve Connection Flange in accordance with DIN EN 1092 or ASME B 16.5
Bellows Material (optional) Stainless steel, elastomer
Load Type Spring

 

APPROVALS

INDUSTRIES

  • Chemical Industry
  • Petrochemical Industry
  • Power
  • Technical Gases
  • Food and Beverage Industry
  • Pharmaceutical Industry

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