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Library› Engine Room› Industrial Valves› Safety / Relief Valve› LESER GmbH High PerformanceType 441 442 DIN
LESER GmbH

High PerformanceType 441 442 DIN

Safety / Relief Valve · Industrial Valves

Class-certified type (DNV register) · technical data sheet not yet verified

Full lift safety valve with rolled-in seat, DIN flange connections

Specifications

Technical data.

Every value below comes from the manufacturer datasheet or class-society record on file for this model.

Set pressure(according to CE)0,1 – 40 bar | 1,5 – 580 psig
Set pressure (according to ASME)1 – 40 bar | 15 – 580 psig
Temperature(according to CE)-270 – 450 °C | -454 – 842 °F
Temperature(according to ASME)-268 – 538 °C | -450 – 1.000 °F
Connections DIN EN 1092DN 20 to DN 400
Connections ASME B16.5NPS 3/4 to NPS 16
Flange class Inlet DIN EN 1092PN 10 - PN 40
Flange class Inlet ASME B16.5Class 150 - Class 300
Body material0.6025, 0.7043, 1.0619, 1.4408 | Gr. 60-40-18, SA 216 WCB, SA 351 CF8M
Narrowest flow diameter d₀18 - 295 mm | 0.71 - 11.61 in
Narrowest flow area A₀254 - 6.8347 mm² | 0.394 - 105.938 in²
Bellows materialStainless steel and elastomer
📄
Download datasheet (PDF) (11246 KB)
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