Description
The Armstrong International 811-1-125 is a Series 811 Cast Iron Inverted Bucket Steam Trap engineered for dependable condensate removal and air venting in industrial and commercial steam systems. With a 1″ NPT connection and a maximum allowable pressure of 125 PSI, this trap is built to handle demanding steam distribution applications while delivering long service life and energy efficiency.
The inverted bucket mechanism is one of the most proven and robust steam trap designs in the industry. As condensate enters the trap body, the inverted bucket loses buoyancy and sinks, opening the discharge valve to release condensate and non-condensable gases. When live steam enters, the bucket regains buoyancy and rises to close the valve — preventing steam loss and maximizing system efficiency. The 1/8″ orifice provides precise flow control suited for low-to-moderate condensate loads.
Key Features
- Series 811 inverted bucket steam trap design for reliable, continuous condensate drainage
- Cast iron body construction for durability in industrial steam environments
- 1″ NPT pipe connection for straightforward installation into standard steam piping
- 125 PSI maximum allowable working pressure
- 1/8″ orifice for controlled condensate discharge flow
- Automatic air and CO₂ venting capability inherent to the inverted bucket design
- Suitable for steam mains, drip legs, tracing lines, and process equipment
Specifications
- Brand: Armstrong International
- Series: 811
- SKU: 811-1-125
- Connection Size: 1″ NPT
- Maximum Allowable Pressure: 125 PSI
- Orifice Size: 1/8″
- Body Material: Cast Iron
- Trap Type: Inverted Bucket
Applications
- Steam main drip stations
- Steam tracing and jacketing systems
- Unit heaters and heat exchangers
- Industrial process steam equipment
- HVAC steam distribution systems
Armstrong International is a world leader in steam management solutions, and the Series 811 inverted bucket trap reflects their commitment to efficiency, reliability, and minimal maintenance. Trust the 811-1-125 to keep your steam system operating at peak performance.
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