The Armstrong 521 Steel Inverted Bucket Steam Trap is a forged carbon steel trap for horizontal installation at pressures up to 1,000 psig (69 bar). The 521 offers smaller capacities at higher pressures with an integral strainer for pipeline protection and in-line repairability.
A unique leverage system multiplies the force provided by the bucket. The free-floating mechanism has no fixed pivots, and dirt is purged by full differential action when the bucket sinks.
Key Features
- Forged carbon steel body for pressures up to 1,000 psig
- Integral strainer for pipeline protection
- In-line repairability
- Free-floating stainless steel mechanism
- Continuous air venting at steam temperature
- Horizontal installation
Applications
Ideal for high-pressure tracer lines, steam mains, and process equipment. Available with screwed NPT, socket weld, and flanged connections.
