Description
Hoffman Specialty #4 Thermostatic Steam Vent — SKU 401416
The Xylem-Hoffman Specialty 401416 is a #4 Thermostatic Steam Vent engineered for dependable air venting in one-pipe steam heating systems. By automatically releasing trapped air from radiators and steam mains, this vent allows steam to fill the system quickly and efficiently — improving heat distribution and reducing fuel consumption.
How It Works
The thermostatic element inside the vent remains open when cool air is present, allowing air to escape freely. Once steam reaches the vent, the element expands and closes the orifice, preventing steam loss. When the steam condenses and the vent cools, it reopens automatically — ready for the next heating cycle.
Key Features
- Thermostatic steam vent for one-pipe steam radiator and main applications
- 1/2″ female inlet connection for easy installation on standard radiator air vent tappings
- 3/4″ male outlet connection
- Rated for systems up to 25 PSI operating pressure
- Automatic open/close operation — no manual adjustment required
- Durable construction for long service life in steam heating environments
- Trusted Hoffman Specialty design, a recognized name in steam system components
Specifications
- SKU: 401416
- Model: #4 Thermostatic Steam Vent
- Inlet Connection: 1/2″ Female
- Outlet Connection: 3/4″ Male
- Maximum Operating Pressure: 25 PSI
- Application: One-pipe steam heating systems
- Brand: Xylem-Hoffman Specialty
Application
Ideal for use on steam radiators, convectors, and unit heaters in residential and light commercial one-pipe steam heating systems. Proper air venting is critical to balanced heat distribution — the Hoffman 401416 ensures air is expelled rapidly so steam reaches every part of the system without delay.
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