Hoffman 401485 Model 78 Water Main Vent Valve
Hoffman 401485 Model 78 Water Main Vent Valve
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Apply for Trade Account & Terms →| Performance Parameter | Engineering Baseline Value |
|---|---|
| Manufacturer Part Number (MPN) | 401485 |
| Model Designation | Model 78 |
Efficient air removal is essential for maintaining a balanced and responsive hydronic heating system, and the 401485 Hoffman Model 78 water main vent valve is engineered to provide precise, automatic venting. By effectively purging trapped air from hydronic piping and equipment, this component prevents noise, corrosion, and circulation blockages, ensuring your system operates at peak thermal efficiency throughout the heating season.
The unit features a reliable float-operated mechanism that remains open to exhaust air as the system fills or operates, and seals tightly against a precision-ground seat once the system is fully pressurized with water. Its durable construction ensures longevity under standard operating pressures, making it an industry-standard choice for main piping applications requiring consistent air management.
Key System Performance Baselines:
- Automatic Air Purging: Designed to continuously vent air pockets to maintain system pressure and efficiency.
- Rugged Construction: Built with high-quality materials to resist internal pressure stresses and long-term wear.
- Precision Sealing: Features a close-tolerance valve seat to prevent leakage during operation.
- Simplified Maintenance: Engineered for easy installation and reliable performance in critical system locations.
⚠️ Application Profile: Primarily utilized for residential and commercial hydronic heating systems, specifically intended for installation on main distribution lines where air accumulation typically occurs during filling or expansion cycles.
