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LESER GmbH & Co. KG
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Leser - Model Type 441 442 DIN - High ...

Leser - Model Type 441 442 DIN -High Performance Safety Valves

Full lift safety valve with rolled seat , DIN flange connections. Delivery times: 2 weeks for standard configurations. Gray cast iron, nodular cast iron, carbon steel and stainless steel castings.

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full lift safety valve

pressure relief valve

All industries up to 40 barg

The optimal solution for:

Pressure relief within 5% pressure increase
Common in steam and gas applications up to 40 barg
Nominal sizes up to DN 400
High required mass flows
Easy maintenance

Set pressure(according to CE): 0.1 - 40 barg | 1.5 - 580 psig
Set pressure(according to ASME): 1.03 - 40 barg | 15 - 580 psig
Temperature(according to CE): -270 to 450 °C | -454 to 842 °F
Temperature(according to ASME): -268 to 538 °C | -450 to 1,000 °F
Capacity: orifice F- to X
Connections DIN EN 1092: DN 20 to DN 400
Connections ASME B16.5: NPS 3/4 to NPS 16
Flange class Inlet DIN EN 1092: PN 10 - PN 40
Flange class Inlet ASME B16.5: Class 150 - Class 300
Body material: 0.6025, 0.7043, 1.0619, 1.4408 | Gr. 60-40-18, SA 216 WCB, SA 351 CF8M
Narrowest flow diameter d0: 18 - 295 mm | 0.71 - 11.61 in
Narrowest flow area A0: 254 - 6.8347 mm² | 0.394 - 105.938 in²
Bellows material: Stainless steel and elastomer
Seat gasket: Metallic, Sealing plate , Soft sealing

Leser - Model Type 441 442 DIN -High Performance Safety Valves

Applications & Industries

Technical Features Type 441, 442 DIN