Forbes Marshall Bucket Trap FMBT
The Forbes Marshall Bucket Trap (FMBT) series provides a robust, mechanical steam trapping solution engineered specifically for continuous condensate recovery in high-pressure lines. Operating on a precise density-driven inverted bucket principle, these traps automatically sink to discharge condensate and float to prevent costly steam loss.
Key Applications:
Specifically engineered for main steam lines, process equipment, heat exchangers, and high-pressure condensate recovery networks requiring consistent discharge.
- Utilises an internal bucket that floats or sinks based on the density difference between steam and condensate
- Features a small, calibrated, integral vent hole integrated directly into the top of the bucket
- Variant-Specific Construction: Includes Cast Iron, Cast Steel and Stainless Steel
- Integral Strainer Screen: FMBT30 and FMBT50 variants feature built-in stainless steel strainer screens
- The FMBT66-U variant features a specialized universal connector flange
- FMBT30, FMBT50, and FMBT54 variants are constructed with removable top covers and valve guide plates
Maintenance Schedule for Steam Distribution SystemVariants
Size and Pipe Connections
DN 15 , 20 and 25 with Screwed BSPT/ NPT ends
Size and Pipe Connections
DN 15, DN20, and DN25
Screwed BSPT/NPT
Socket weldable ends
Size and Pipe Connections
Body design conditions: ASME 600
Universal Connection
Available with IBR Certificate on request.
Frequently Asked Questions
A bucket trap is constructed in such a way that the condensate is forced to changes its course multiple ties before it enters the trap. As a result, when the condensate enters an inverted bucket trap, it has lost all its momentum and does not damage the trap internals making the trap water hammer resistant.
The Forbes Marshall Bucket Trap is a steam trap designed to efficiently discharge condensate while preventing steam loss. Its robust design makes it suitable for high-pressure and high-temperature applications in steam systems.
The FMBT is particularly effective in applications involving main steam lines, process equipment, and heat exchangers, where consistent condensate removal and energy efficiency are critical.
The Forbes Marshall Bucket Trap (FMBT) operates on the density difference between steam and condensate. Inside the trap, an inverted bucket floats in response to the presence of steam or sinks when filled with condensate. This mechanism offers durability, resistance to water hammer, and reliable performance even under fluctuating load conditions.
