LESER High Performance Safety Valve Type 441 442 XXL

High Performance

Type 441, 442 XXL

Safety valve with high nominal diameter

Approvals

LESER High Performance safety valves of Type 441, 442 XXL are designed, marked, produced and approved according to the requirements of the following regulations:

  • LESER CE Approvel
  • LESER ASME Approvel
  • LESER EAC Approvel
  • LESER Chinese TS Approvel

Technical specifications Type 441, 442 XXL

Nominal Diameter at Inlet
DN 200 - DN 400 | 8" - 16"
Actual Orifice Diameter d₀
165 - 295 mm | 6.5 - 11.61 in
Actual Orifice Area A₀
21382 - 68349 mm² | 33.143 - 105.942 in²
Pressure
0.2 - 25 bar | 2.9 - 363 psig
Flange Rating Inlet
PN 16 - PN 25 | CL150 - CL300
Temperature (in accordance with DIN EN)
-196 to 550 °C | -321 to 1022 °F
Temperatur (nach ASME)
-184 to 427 °C | -300 to 800 °F
Body Material
1.0460 / 1.0425, 1.4571 | Carbon steel, 316Ti
Valve Connection
Flange acc. to DIN EN 1092-1 or acc. to ASME B 16.5 or acc. to JIS 2220
Bellows Material (optional)
Stainless steel
Load Type
Spring loaded
Approvals
PED/DIN EN ISO 4126-1, PED/AD 2000-Merkblatt A2, ASME Sec. VIII Div. 1, CRN, AQSIQ, EAC
Classification societies
LR, RINA, DNV GL, BV, ABS
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