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Product

Compact Performance - Safety Relief Valves Leser

Price: Contact

  • Model: Compact Performance
  • Trademark: LESER
  • Origin: Germany
  • Leser Safety valves with compact dimensions and high connection variety

    • Flanged and threaded valves with a wide range of options
    • Small installation space with simultaneous horizontal installation option
    • Bellows version available
    • Set pressures up to 850 barg / 12325 psig
    • LESER Nanotightness: Exceeds the tightness requirements of API 527 by 50%

    Industries

    • Chemical 
    • Oil & Gas 
    • Petrochemical 
    • Energy 
    • Technical Gases 
    • LNG and LPG 
    • Pharmaceutical 
    • Food and Beverage 
    • Ship Building 
    • General industries 

    Approvals

    LESER Compact Performance safety valves are designed, marked, produced and approved according to the requirements of the following regulations:

    Valve Types

    • Type 437 
      • Metal to metal or sealing plate
      • G 3/8 - 1 (NPT 1/2" - 1")
    • Type 438 
      • O-ring disc
      • G 3/8 - 1 (NPT 1/2" - 1")
    • Type 439 
      • Vulcanized soft seal disc
      • G 3/8 - 1 (NPT 1/2" - 1")
    • Type 459 
      • Metal to metal or sealing plate
      • 1/2" - 1 1/2" (1/2" - 1 1/2")
    • Type 459 HDD 
      • Metal to metal or sealing plate, massive construction for high pressure
      • 1/2" - 1“ (1/2" - 1“ )
    • Type 462 
      • O-ring disc
      • 1/2" - 1 1/2" (1/2" - 1 1/2")
    • Type 462 HDD 
      • O-ring disc, massive construction for high pressure
      • 1/2" - 1“ (1/2" - 1“ )

     

    Technical data Compact Perfomance

    • Nominal Diameter at Inlet
      • DN 15 - DN 40 | 3/8" - 1 1/2"
    • Actual Orifice Diameter d₀
      • 6 mm - 17.5 mm | 0.236 in - 0.689 in
    • Actual Orifice Area A₀
      • 28.3 mm² - 241 mm² | 0.044 in² - 0.374 in²
    • Pressure
      • 0.1 bar - 850 bar | 1.5 psig - 12.328 psig
    • Temperature (in accordance with DIN EN)
      • -270°C to +450°C | -454°F to +842°F
    • Body Material
      • 1.4104, 1.4404, 0.7043, 1.0619, 1.4408 | SA 479 430, SA 479 316L, Ductile Gr. 60-40-18, SA 216 WCB, SA 351 CF8M
    • Valve Connection
      • Threads DIN ISO 228-1, DIN ISO 7-1 / BS 21, ANSI / ASME B1.20.1. / Flange iaw DIN EN 1092-1 / DIN 2501., ASME B16.5
    • Bellows Material (optional)
      • Stainless steel, Elastomer (EPDM), Hastelloy, Inconel
    • Load Type
      • Spring-loaded

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