Description
The Armstrong International Series 811 Cast Iron Inverted Bucket Steam Trap (Model 811-3/4-70) is a time-tested, mechanically operated trap engineered for dependable condensate and air removal in a wide range of steam heating and process applications. The inverted bucket design provides continuous, energy-efficient operation with built-in resistance to water hammer and steam loss.
Key Features
- Series 811 inverted bucket mechanism for reliable, self-modulating condensate discharge
- 3/4″ NPT inlet and outlet connections for straightforward installation into existing steam piping
- 70 PSI maximum operating pressure rating for medium-pressure steam systems
- 5/32″ orifice size precisely calibrated for optimal condensate flow and steam conservation
- Cast iron body construction provides durability and long service life in demanding steam environments
- Resistant to water hammer — a common cause of steam trap failure
- Automatic air venting capability for fast system startup and purging of non-condensable gases
- Minimal moving parts reduce maintenance requirements and extend service intervals
Specifications
- Model: 811-3/4-70
- Series: 811
- Trap Type: Inverted Bucket
- Body Material: Cast Iron
- Connection Size: 3/4″ NPT
- Maximum Operating Pressure: 70 PSI
- Orifice Size: 5/32″
- Brand: Armstrong International
Applications
- Steam heating systems in commercial and industrial buildings
- Process steam lines requiring efficient condensate removal
- Unit heaters, heat exchangers, and steam coils
- Drip legs and tracer lines operating at medium pressures
Armstrong International is a globally recognized leader in steam system solutions. The Series 811 inverted bucket steam trap reflects their commitment to energy efficiency, system reliability, and reduced total cost of ownership. Proper steam trap selection and maintenance can significantly reduce energy waste and improve overall system performance.
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