Description
Armstrong International 15B3 Series B Cast Iron Float & Thermostatic Steam Trap
The Armstrong International 15B3 is a Series B Cast Iron Float & Thermostatic (F&T) Steam Trap engineered for reliable, continuous condensate discharge in low-pressure steam heating systems. Combining a float mechanism for continuous liquid drainage with an integrated thermostatic air vent for automatic air and non-condensable gas elimination, this trap ensures peak system efficiency and prevents steam loss.
Key Features
- Series B Cast Iron body construction for durability and long service life
- Float & Thermostatic (F&T) design provides continuous, modulating condensate discharge
- Integrated thermostatic air vent automatically purges air and non-condensable gases on startup and during operation
- 3/4″ NPT standard connection for straightforward installation into existing piping
- 15 PSI maximum operating pressure rating
- 7/32″ orifice sized for optimal condensate handling at rated pressure
- Suitable for a wide range of low-pressure steam heating and process applications
Specifications
- Brand: Armstrong International
- Model / SKU: 15B3
- Series: Series B
- Body Material: Cast Iron
- Trap Type: Float & Thermostatic (F&T)
- Connection Size: 3/4″ NPT
- Connection Type: Standard (NPT)
- Maximum Operating Pressure: 15 PSI
- Orifice Size: 7/32″
- Air Vent: Thermostatic Air Vent Included
Application
The Armstrong 15B3 is ideal for low-pressure steam heating systems in commercial and industrial buildings, including unit heaters, heat exchangers, coils, and radiators. The float mechanism responds instantly to condensate load changes, while the thermostatic air vent ensures rapid system warm-up and eliminates air binding — a common cause of inefficient heat transfer in steam systems.
Why Choose Armstrong International?
Armstrong International is a globally recognized leader in steam management, condensate recovery, and energy conservation. Their Series B steam traps are built to deliver dependable performance and long service intervals, reducing maintenance costs and system downtime.
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