Modulate Action

Safety valves primarily for liquid applications

  • Identical inlet and outlet connections
  • Low loss of medium when opening
  • Ideal for thermal expansion
  • Backpressure resistance up to 40 bar / 580.15 psig
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  • VdTUEV
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Modulate Action pressure relief valve from LESER

Technical Data Modulate Action Safety valves

Set pressure
0.2 - 160 barg | 2.9 - 2,320.6 psig
Temperature
-270 - 450 °C | -454 - 842 °F
Capacity
Orifice C- to M+
Connections DIN EN 1092
DN 15 to DN 150
Connections ASME B16.5
 NPS 1/2 to NPS 6

Body material
Grey cast iron, nodular cast iron, carbon steel, stainless cast steel
BASF_inv
PIA
NOVARTIS
LESER Safety valve Type 433 PN160 cutting image
BASF_inv
PIA
NOVARTIS

Valve Types

High Performance Safety Valves for general applications

Wide pressure range for all industrial applications
LESER Modulate Action Safety Valve Type 431 433
Type 431, 433

Standard Safety valves with rolled-in seat, DIN and ASME flange connections

DN 15 - DN 150 | NPS 1/2 - NPS 6

0.2 - 40 bar | 2.9 - 580.15 psig

LESER Modulate Action Safety Valve Type 431 433 PN 160
Type 431 433 PN 160

Standard Safety valves with screwed seat , DIN and ASME flange connections

DN 15 | NPS 1/2

0.3 - 160 bar | 4.35 - 2320.6 psig

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Sizing and selection

Sizing and selection of your LESER Safety valve with VALVESTAR® - The Sizing Program

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