Description
The Armstrong International Series 811 Cast Iron Inverted Bucket Steam Trap (Model 811-3/4-250) is a rugged, dependable solution for steam system condensate management in commercial and industrial applications. Built around the proven inverted bucket operating principle, this trap efficiently discharges condensate and non-condensable gases while preventing live steam loss — helping to maximize system efficiency and reduce energy costs.
Key Features
- Inverted bucket operating mechanism for reliable, continuous condensate discharge
- Cast iron body construction for durability in demanding steam system environments
- 3/4″ NPT connections for straightforward installation into standard piping systems
- 250 PSI maximum allowable pressure (MAP) rating for high-pressure steam applications
- #38 orifice for optimized condensate capacity and steam conservation
- Resistant to water hammer and suitable for a wide range of steam pressures
- Simple, robust design with minimal moving parts for long service life and easy maintenance
Product Specifications
- Brand: Armstrong International
- Series: 811
- Model: 811-3/4-250
- Connection Size: 3/4″ NPT
- Maximum Allowable Pressure: 250 PSI
- Orifice: #38
- Body Material: Cast Iron
- Trap Type: Inverted Bucket
Applications
- Steam distribution and process piping condensate removal
- Steam tracing systems
- Heat exchangers and unit heaters
- Industrial and commercial steam system drainage points
- Drip trap service on steam mains and branch lines
The Armstrong International Series 811 is part of a long-standing line of inverted bucket steam traps trusted by mechanical contractors, facilities engineers, and HVAC professionals worldwide. The inverted bucket design provides inherent resistance to wear and offers excellent performance across varying load conditions, making it a go-to choice for reliable steam trap service.
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