LESER High Performance Safety Valve Type 441 442 Full nozzle DIN

High Performance

Type 441, 442 Full nozzle DIN

Safety valve with full nozzle

Approvals

LESER High Performance safety valves of Type 441, 442 Full nozzle DIN 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 Full nozzle DIN

Nominal Diameter at Inlet
DN 25 - DN 50 | 1" - 2"
Actual Orifice Diameter d₀
23 - 46 mm | 0.91 - 1.81 in
Actual Orifice Area A₀
416 - 1662 mm² | 0.644 - 2.576 in²
Pressure
0.1 - 40 bar | 1.5 - 580 psig
Flange Rating Inlet
PN 16 - PN 40 | CL150 - CL300
Temperature (in accordance with DIN EN)
-270 to 450 °C | -454 to 842 °F
Temperatur (nach ASME)
-268 to 538 °C | -450 to 1000 °F
Body Material
1.0619, 1.4408 | SA 216 WCB, SA 351 CF8M
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 and elastomer
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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