TYPE 455, 456
Type 455, 456 LESER High Performance pressure relief valves are designed, marked, produced and approved according to the requirements of the following regulations:
Technical Specifications for Type 455, 456
Nominal Diameter Inlet - Thread
DN 25 - DN 100 | 1" - 4"
Nominal Diameter Inlet - Flange
20 - 74 mm | 0.79 - 2.91 in
Actual Orifice Area A₀
314 - 4301 mm² | 0.487 - 6.666 in²
2.5 - 100 bar | 36 - 1450 psig
Flange Rating Inlet
PN 63 - PN 160 | CL150 - CL1500
Temperature (in accordance with DIN EN)
-85 to 550 °C | -121 to 1022 °F
Temperature (nach ASME)
-29 to 538 °C | -20 to 1000 °F
1.0619, 1.4581, 1.7357 | SA 216 WCB, SA 351 CF10M, SA 217 WC6
Flange acc. to DIN EN 1092-1 or acc. to ASME B 16.5 or acc. to JIS 2220
Bellows Material (optional)
PED/DIN EN ISO 4126-1, PED/AD 2000-Merkblatt A2, ASME Section XIII certified for Section VIII Div. 1 service, CRN, AQSIQ, EAC
Access all the necessary documents and detailed information for pressure relief valves in our download area.
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