API safety valve from LESER

APIType 526

Spring loaded safety valves according to API 526. Technical data

  • High alloy materials available in 4 weeks delivery time
  • Longer life due to hardened discs, stellited seats and shielded bellows
  • LESER Nanotightness exceeds API 527 tightness requirements by 50 %

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Applications & Industries

  • Petrochemical
  • Chemistry
  • Oil & Gas
  • also for operating temperatures

The optimal solution for:

  • high pressures and temperatures
  • Corrosive media
  • Back pressures up to 50%
BP COOEC_inv Petrobras

Technical Data Type 526

Set pressure(according to CE)

0,12 – 400 bar | 2 – 5.802 psig

Set pressure (according to ASME)

1 – 414 bar | 15 – 6.000 psig

Temperature(according to CE)
-270 – 550 °C | -454 – 1,022 °F
Temperature(according to ASME)

-268 – 538 °C | -450 – 1.000 °F

Capacity orifice D to T
Connections DIN EN 1092
DN 25 - DN 200
Connections ASME B16.5 NPS 1 to NPS 8
Flange class Inlet DIN EN 1092
PN16 - PN400
Flange class Inlet ASME B16.5
Class 150 - Class 2500
Body material 1.0619, 1.4408, 1.7357 | SA 216 WCB, SA 351 CF8M, SA 217 WC6, 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 14 - 161.5 mm | 0.55 - 6.36 in
Narrowest flow area A₀ 154 - 20.485 mm² | 0.239 - 31.75 in²
Bellows material (optional) INCONEL® 625 LCF
Seat gasket Metallic, Sealing plate , o-ring


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