Differential Pressure Switch
Dungs LGW-3-A2
The Dungs LGW-3-A2 is a differential pressure switch from the LGW-3 series for monitoring burner air and gas pressures (and flue-gas differential). Rated 0.4-3 mbar with a 500 mbar maximum and IP54 enclosure, it meets EN 1854 and provides safe lock-out on fan-pressure loss to prevent flashback and explosion.
0.4-3 mbar
IP54
EN 1854
CE
500 mbar max
Why buyers choose it
- Monitors fan/gas pressure for safe burner lock-out.
- Adjustable setpoint with scaled dial.
- EN 1854 and CE certified for combustion use.
- Compact, easy to install on burner front.
Specifications
| Model | Dungs LGW-3-A2 (LGW-3-A2-P with test button) |
|---|---|
| Range | 0.4-3 mbar (adjustable) |
| Max pressure | 500 mbar |
| Enclosure | IP54 |
| Standard | EN 1854, CE, RoHS |
| Electrical | 10-250 V AC/DC, 1NO+1NC |
Applications
Air/gas pressure supervision on gas and oil burners.
Flue-gas differential monitoring in combustion systems.
Buyer Questions
Dungs LGW-3-A2 FAQs
What does the Dungs LGW-3-A2 monitor?
It is a differential pressure switch for burner air/gas (and flue-gas) monitoring, 0.4-3 mbar, per the Dungs-listed page.
What protection rating and standard?
IP54 enclosure, certified to EN 1854 and CE.
What happens on pressure loss?
It opens/converts contacts to lock out the burner safely, preventing flashback or explosion.
Request a quote for LGW-3-A2
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