Description
Armstrong International 30B3 Series B Cast Iron Float & Thermostatic Steam Trap
The Armstrong International 30B3 is a Series B Float & Thermostatic (F&T) steam trap engineered for reliable continuous condensate discharge in low-pressure steam heating and process systems. Built with a durable cast iron body and featuring a standard 3/4″ NPT connection, this trap is designed for straightforward installation and long-term performance in commercial and industrial HVAC applications.
Key Features
- Series B cast iron body construction for durability in demanding steam system environments
- 3/4″ NPT standard inlet and outlet connections for easy integration into existing piping
- 30 PSI maximum allowable pressure (MAP) rating
- 11/64″ orifice for precise, controlled condensate flow
- Integrated thermostatic air vent for automatic purging of non-condensable gases and air at startup
- Float & Thermostatic design provides continuous modulating condensate discharge
- Prevents steam loss while efficiently removing condensate and air
How Float & Thermostatic Traps Work
F&T steam traps use a float mechanism to continuously discharge condensate as it forms, while the thermostatic air vent element automatically opens to release air and non-condensable gases. This dual-action design ensures rapid system warm-up, eliminates air binding, and maintains efficient heat transfer throughout the steam system.
Typical Applications
- Unit heaters and cabinet heaters
- Fan coil units and air handling units
- Low-pressure steam heating coils
- Steam-to-water heat exchangers
- Drip legs and steam mains
Specifications
- Brand: Armstrong International
- Model / SKU: 30B3
- Series: B
- Body Material: Cast Iron
- Connection Size: 3/4″ NPT
- Connection Type: Standard (NPT threaded)
- Maximum Allowable Pressure: 30 PSI
- Orifice Size: 11/64″
- Trap Type: Float & Thermostatic (F&T)
- Air Vent: Thermostatic air vent included
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