Hoffman 1A, 1/8" Adjustable Angle Steam Radiator Air Valve
$72.92
The Hoffman 1A 1/8" Adjustable Angle Steam Radiator Air Valve is a trusted solution for controlled air removal in low-pressure steam heating systems. Designed with an adjustable port and float-type mechanism, this radiator vent lets steam enter efficiently while expelling trapped air for balanced heat distribution. Its angled 1/8″ NPT connection fits standard radiator taps, and the multi-setting venting helps technicians fine-tune performance on site.
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Key Features
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Float-type steam air vent for automatic air discharge as steam fills the radiator.
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Adjustable vent port with 6 proportional settings from slow to fast — tailored venting control.
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Angle-pattern body with 1/8″ NPT male connection for easy installation on typical radiator fittings.
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Supports low-pressure steam systems with safety-appropriate ratings.
Technical Specifications
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Model / Part Number: 401422 (Hoffman 1A)
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Connection Size: 1/8″ NPT (angle pattern)
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Vent Type: Float-type air vent
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Adjustable Port Settings: 6 proportional positions (slow to fast)
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Maximum Operating Pressure: ~1.5 psig (~0.1 bar)
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Maximum Pressure Rating: 10 psig (~0.7 bar)
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Temperature Range: approximately 140 °F to 240 °F (industry typical)
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Orientation: Angle mount
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System Type: Low-pressure steam heating
