Hoffman 401413 Model 4A Non-Vacuum Air Valve
Hoffman 401413 Model 4A Non-Vacuum Air Valve
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Apply for Trade Account & Terms →| Performance Parameter | Engineering Baseline Value |
|---|---|
| Manufacturer Part Number (MPN) | 401413 |
| Model Designation | 4A |
Efficiently manage air discharge in one-pipe steam heating systems with the Hoffman 401413 Model 4A non-vacuum air valve. Designed for high-performance venting, this valve ensures your radiators operate at peak efficiency by removing trapped air that can hinder heat transfer throughout your hydronic network.
The unit features a precision-engineered bimetallic element that remains open to allow cold air to escape, then automatically closes when steam reaches the valve to prevent leakage. This simple yet highly effective thermal expansion mechanism ensures quiet, consistent operation without the need for manual adjustment or external power sources.
Key System Performance Baselines:
- Efficient Air Removal: Rapidly exhausts cold air to allow steam to reach radiators quickly.
- Positive Seal: Integrated thermostatic design closes reliably upon contact with steam.
- Durable Construction: Engineered to withstand the rigors of standard steam heating system pressures.
⚠️ Application Profile: Primarily designed for use on one-pipe steam radiators, convectors, and unit heaters in residential or commercial heating environments.
