Description
Hoffman Specialty 401461 — #45 Steam Vent, 3/4″ x 1/2″
The Xylem-Hoffman Specialty 401461 is a #45 series steam vent designed for use on one-pipe steam heating systems. Engineered to automatically release trapped air from radiators and steam mains during system startup, this vent allows steam to distribute quickly and evenly throughout the system — improving comfort and fuel efficiency. When steam reaches the vent, the thermostatic element closes automatically, preventing steam loss and maintaining system pressure.
Key Features
- Model #45 thermostatic air vent for one-pipe steam radiator applications
- 3/4″ inlet x 1/2″ outlet connection sizes for versatile installation
- Automatic operation — opens to vent air, closes when steam arrives
- Thermostatic element responds to temperature differential between air and steam
- Durable brass construction for long service life in steam environments
- Helps eliminate cold radiators and uneven heat distribution
- Compact design fits standard radiator air vent tappings
Application
The Hoffman Specialty #45 steam vent is ideal for residential and light commercial one-pipe steam heating systems. It is installed on the air vent tapping of steam radiators or at the ends of steam mains to purge non-condensable gases and air that would otherwise block steam flow and reduce heating efficiency. Proper air venting is essential to balanced steam distribution and system longevity.
Why Choose Hoffman Specialty
Hoffman Specialty, a trusted brand under the Xylem portfolio, has been a leading manufacturer of steam system components for decades. Their steam vents are recognized throughout the HVAC industry for reliable thermostatic performance, quality materials, and compatibility with a wide range of steam heating systems.
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