Modulate Action

Type 431 / 433 PN 160

Safety valve with medium capacities and high proportional opening area for high pressures

Approvals

LESER Modulate Action safety valves of Type 431 / 433 PN 160 are designed, marked, produced and approved according to the requirements of the following regulations:

Technical specifications Type 431, 433 PN 160

Nominal Diameter at Inlet
DN 15 | 1/2"
Actual Orifice Diameter d₀
12 mm | 0.47 in
Actual Orifice Area A₀
113 mm² | 0.175 in²
Pressure
0.3 - 160 bar | 4.35 - 2320.6 psig
Flange Rating Inlet
PN 63 - PN 160 | CL300 - CL600
Temperature (in accordance with DIN EN)
-270 to 450 °C | -454 to 842 °F
Body Material
1.0619, 1.4408
Valve Connection
Flange acc. to DIN EN 1092 or acc. to ASME B16.5
Bellows Material (optional)
Stainless steel and elastomer
Load Type
Spring loaded
Approvals
PED/ DIN EN ISO 4126-1, PED/ AD 2000-Merkblatt A2, AQSIQ, EAC
Classification societies
LR, RINA, DNV GL, BV, ABS
Specials
Units converted; No approvals acc. to ASME

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