LESER Pressure relief valves according to API 526 with standardized capacities and dimensions

• Compliance with API 526
• Diverse selection of high-alloy materials available as standard
• Longer lifetime due to hardened discs, partly stellited seats and integrated shielding of the optional bellows
• Single trim: Identical internal parts for S/G/L for cost-effective maintenance
• LESER Nanotightness: Exceeds the tightness requirements of API 527 by 50%

Industries

• Chemical 
• Oil & Gas 
• Petrochemical 
• Technical Gases 
• General industries 

Approvals

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

Valve Types

Type 526

Fulfillment of API 526

DN 25 - DN 200 (1" - 8")

Technical specifications API

Nominal Diameter at Inlet

DN 25 - DN 200 | 1" - 8"

Actual Orifice Diameter d₀

14 mm - 161.5 mm | 0.551 in - 6.36 in

Actual Orifice Area A₀

154 mm² - 20,485 mm² | 0.239 in² - 31.75 in²

Pressure

0.12 bar - 413.7 bar | 2 psig - 6,000 psig

Temperature (in accordance with DIN EN)

-268 °C bis 538 °C | -450 °F bis 1,000 °F

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)

Valve Connection

Flange in accordance with ASME B 16.5 or DIN EN 1092

Bellows Material (optional)

INCONEL 625

Load Type

Spring-loaded