Hoffman 401470 - Model 71A Non-Vacuum Air Valve

Reliable air venting is essential for maintaining consistent heat distribution in one-pipe steam heating systems, a function expertly handled by the 401470 Hoffman Model 71A. This non-vacuum air valve is engineered to automatically release air from steam radiators and piping, ensuring that steam can circulate freely and effectively to maximize comfort throughout your building.

The valve operates using a precision-calibrated thermal element that remains open while cold, allowing air to escape, and seals tightly as soon as steam reaches the valve. This robust design prevents premature steam closure and protects against water hammer by facilitating smooth, efficient system air removal during every heating cycle.

Key System Performance Baselines:

• Automatic Venting: Efficiently exhausts air from steam systems to prevent cold spots.
• Reliable Closure: Precision thermal mechanism seals immediately upon steam contact.
• Durable Construction: Engineered to withstand the rigors of frequent heating cycles.
• System Compatibility: Designed specifically for non-vacuum, one-pipe steam applications.

⚠️ Application Profile: Ideal for residential and light commercial one-pipe steam heating systems requiring efficient radiator venting and reliable air discharge to maintain system pressure balance.

📋 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.