Description
Spirax-Sarco B1H-75 Inverted Bucket Steam Trap Overview
The Spirax-Sarco B1H-75 (SKU 64149) is a heavy-duty inverted bucket steam trap engineered for dependable condensate removal in industrial and commercial steam systems. Rated at 75 PSI with 1/2″ pipe connections, this trap delivers the proven performance and long service life that Spirax-Sarco is renowned for worldwide.
How It Works
The inverted bucket mechanism operates on the principle of buoyancy. When steam enters the trap body, the inverted bucket floats and holds the valve closed, retaining live steam. As condensate accumulates and fills the trap body, the bucket loses buoyancy, sinks, and opens the valve to discharge condensate — then closes again when steam re-enters. This continuous, intermittent cycling ensures efficient condensate removal while preventing steam loss.
Key Features
- Model: B1H-75 inverted bucket steam trap
- Connection size: 1/2″ pipe
- Pressure rating: 75 PSI (75#)
- Robust cast iron or steel body construction for long service life
- Inverted bucket mechanism for reliable, self-purging operation
- Suitable for steam mains, tracing lines, and process equipment drip legs
- Intermittent discharge cycle conserves steam and reduces energy costs
- Designed for easy in-line installation and serviceability
Typical Applications
- Steam distribution main drip legs
- Steam tracing on process and instrumentation lines
- Unit heaters and heat exchangers
- Industrial process steam equipment
- HVAC heating coils and air handling units
Why Choose Spirax-Sarco
Spiax-Sarco is a global leader in steam system solutions, trusted by engineers and contractors for over a century. The B1H-75 reflects their commitment to quality engineering, precise steam management, and reduced energy waste — making it the professional’s choice for reliable steam trap performance.






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