CRITICAL SERVICE
TYPE 447
Industries
Approvals
Type 447 LESER Critical Service pressure relief valves are designed, marked, produced and approved according to the requirements of the following regulations:
UV
Technical Specifications for Type 447
Nominal Diameter at Inlet
DN 25 - DN 100 | 1" - 4"
Actual Orifice Diameter dâ‚€
23 - 92 mm | 0.91 - 3.62 in
Actual Orifice Area Aâ‚€
416 - 6648 mm² | 0.645 - 10.304 in²
Pressure
0.1 - 16 bar | 1.45 - 232 psig
Flange Rating Inlet
PN 16 | CL150
Temperature (in accordance with DIN EN)
-85 to 200 °C | -121 to 392 °F
Temperature (nach ASME)
-29 to 200 °C | -200 to 392 °F
Body Material
1.0406, 10619, 1.0570 + Virgin PTFE | SA 216 WCB
Valve Connection
Flange acc. to DIN EN 1092-1 or acc. to ASME B 16.5
Bellows Material (optional)
PTFE
Load Type
Spring loaded
Approvals
PED/ DIN EN ISO 4126-1, PED/ AD 2000-Merkblatt A2, ASME Section XIII certified for Section VIII Div. 1 service, CRN, AQSIQ, EAC
Downloads
Access all the necessary documents and detailed information for pressure relief valves in our download area.
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