Hoffman 401464 - Model 71B Non-Vacuum Air Valve

Maintain optimal heating efficiency by effectively venting unwanted air from your steam radiators with the Hoffman 401464 Model 71B air valve. This non-vacuum air valve is engineered for durability and reliability, ensuring that trapped air does not impede the flow of steam throughout your system, which helps prevent uneven heating and potential energy waste.

This air valve functions by allowing air to escape from the system until steam reaches the unit, at which point the internal thermostatic element expands to seal the port. Once the cycle repeats and steam temperature drops, the valve automatically reopens to exhaust any newly accumulated air, maintaining a balanced and responsive heating system performance.

Key System Performance Baselines:

• Automatic venting: Quickly exhausts air to ensure maximum steam distribution across radiators.
• Non-vacuum design: Specifically engineered for systems requiring non-vacuum operation.
• Precision construction: Built to Hoffman's rigorous standards for longevity and consistent pressure control.

⚠️ Application Profile: Primarily used in residential and light commercial one-pipe steam heating systems to replace worn or malfunctioning radiator air vents.

📋 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.