LESER Compact Performance Safety Valve Type 459 HDD
LESER Compact Performance Safety Valve Type 459 HDD
LESER Compact Performance Safety Valve Type 459 HDD

Compact Performance

Type 459 HDD

Safety valve with massive construction for high pressures, including metal to metal sealing or sealing plate

Approvals

LESER Compact Performance safety valves of Type 459 HDD 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 459 HDD

Nominal Diameter Inlet - Thread
1/2" - 1“ | 1/2" - 1“
Nominal Diameter Inlet - Flange
DN 15 - DN 25 | 1/2" - 1"
Actual Orifice Diameter d₀
6 - 9 mm | 0.236 - 0.354 in
Actual Orifice Area A₀
28.3 - 63.6 mm² | 0.044 - 0.099 in²
Pressure
250.01 - 850 bar | 3626 - 12328 psig
Flange Rating Inlet
PN 320 - PN 400 | CL1500 - CL2500
Temperature (in accordance with DIN EN)
-273 to 400 °C | -459 to 752 °F
Temperatur (nach ASME)
-196 to 450 °C | -321 to 82 °F
Material Outlet Body
1.4408 | SA 351 CF8M
Material inlet body
1.4404 stellited | SA 479 316L stellited
Valve Connection
Thread acc. to DIN ISO 228-1, ISO 7-1 / BS 21 or ASME B1.20.1, Flange acc. to DIN EN 1092-1 or ASME B16.5
Bellows Material (optional)
Stainless steel (only for d09)
Load Type
Spring loaded
Approvals
PED/ DIN EN ISO 4126-1, AD 2000-Merkblatt A2, ASME Sec. VIII Div. 1, CRN, AQSIQ, EAC
Classification societies
LR, DNV GL, BV, ABS
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Compact Performance Catalogue

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