Critical Service

Type 449

Safety valve with block body, flushing protective gas and all special materials available

Industries

Approvals

LESER Critical Service safety valves of Type 449 are designed, marked, produced and approved according to the requirements of the following regulations:

Technical specifications Type 449

Nominal Diameter at Inlet
DN 25 - DN 100 | 1" - 4"
Actual Orifice Diameter d₀
23 - 92 mm | 0.91 - 3.62 in
Actual Orifice Area A₀
416 - 6648 mm² | 0.645 - 10.304 in²
Pressure
0.1 - 16 bar | 1.45 - 232 psig
Temperature (in accordance with DIN EN)
-270 to 450 °C | -121 to 392 °F
Body Material
Acc. to customer preference all materials available
Valve Connection
Flange acc. to DIN EN 1092-1 or acc. to ASME B 16.5
Bellows Material (optional)
Stainless steel
Load Type
Spring loaded
Approvals
On request
Specials
Currently no approvals acc. to ASME

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