Hoffman 401479 Model 790 Water Vent Valve
Hoffman 401479 Model 790 Water Vent Valve
Couldn't load pickup availability
TIPS Contract Vendor
We are an officially awarded purchasing cooperative vendor.
📋 Procurement & Shipping Notice
- LTL Freight Dispatch: Heavy commercial units ship directly via insured LTL carrier with delivery coordination included.
- Project Timelines & Submittals: Need guaranteed delivery dates, formal submittals, or tax-exempt processing?
👉 Request a Commercial Quote or contact our procurement team for direct freight scheduling.
Corporate Procurement & PO Processing
Formal Purchase Orders (POs) and tax-exempt ordering are accepted for commercial contractors and institutional facilities.
Apply for Trade Account & Terms →| Performance Parameter | Engineering Baseline Value |
|---|---|
| Manufacturer Part Number (MPN) | 401479 |
| Model Designation | 790 |
Efficient air removal is essential for maintaining consistent hydronic system performance, and the Hoffman 401479 Model 790 water vent valve is engineered to keep your lines clear. This precision-built component automatically releases trapped air, preventing common issues like air binding and noise that compromise thermal transfer in residential and light commercial heating setups.
The valve operates through a high-quality float mechanism that detects the accumulation of air within the system. As air enters the valve chamber, the internal float drops, opening the vent port to discharge the gas; once water level is restored, the float rises to create a positive, leak-proof seal.
Key System Performance Baselines:
- Automated venting: Effectively purges trapped air to maintain peak system flow.
- Robust construction: Engineered for durability and long-term reliability in hydronic water loops.
- Noise reduction: Eliminates air-induced piping sounds, contributing to quieter system operation.
- Easy installation: Designed for seamless integration into existing hydronic plumbing layouts.
⚠️ Application Profile: Ideal for use in hot water heating systems, residential radiator setups, baseboard heating loops, and small-scale commercial hydronic piping where air entrapment is a concern.
