Hoffman 401488 - Model 79 Water Main Vent Valve
Hoffman 401488 - Model 79 Water Main Vent Valve
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Efficiently remove unwanted air from hydronic heating systems with the Hoffman 401488 Model 79 water main vent valve. Designed for high-capacity air release, this professional-grade component prevents air locks and improves circulation to ensure consistent heat distribution across your piping network.
The internal mechanism utilizes a precision-engineered float and needle valve assembly that automatically discharges air while maintaining a tight seal against water leakage. As air accumulates within the valve chamber, the float drops, opening the port to vent the air; once the system is filled with water, the float rises to securely close the valve.
Key System Performance Baselines:
- Precision venting: Automatically expels air from mains and heat exchangers.
- Leak-resistant seal: High-tolerance needle valve construction ensures drip-free operation.
- Robust durability: Built to withstand standard hydronic system operating pressures.
- Easy installation: Designed for standard main line integration.
⚠️ Application Profile: Ideal for residential and light commercial closed-loop hydronic heating systems, specifically installed at high points or main headers to optimize flow performance.
| Performance Parameter | Engineering Baseline Value |
|---|---|
| Manufacturer Part Number (MPN) | 401488 |
| Model Designation | 79 |
| Component Type | Water Main Vent Valve |
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