Description
The Spirax-Sarco FT-15 is a Float & Thermostatic (F&T) steam trap engineered for dependable, continuous condensate removal in commercial and industrial steam systems. Built with a durable cast iron body and a 1″ NPT connection, this trap combines a float-operated main valve for continuous condensate discharge with an integral thermostatic air vent for efficient non-condensable gas purging — keeping your steam system running at peak efficiency.
How It Works
The float mechanism responds immediately to condensate levels, opening the discharge valve proportionally to the rate of condensate flow. The integral thermostatic element automatically vents air and non-condensable gases during system startup and operation, preventing air-binding and ensuring rapid steam distribution throughout the system.
Key Features
- Float & Thermostatic (F&T) design for continuous condensate discharge
- 1″ NPT inlet and outlet connections
- Cast iron (C.I.) body construction for long service life
- Integral thermostatic air vent for automatic purging of non-condensable gases
- Proportional condensate discharge — no condensate backup or steam loss
- Suitable for steam heating, process, and HVAC hydronic applications
- Spirax-Sarco FT-15 series — a trusted name in steam system management
Typical Applications
- Steam heating coils and heat exchangers
- Unit heaters and air handling unit steam coils
- Steam distribution mains and branch lines
- Industrial process steam equipment
- Drip legs and steam tracing systems
Product Specifications
- SKU: 50927
- Model: FT-15
- Brand: Spirax-Sarco
- Connection Size: 1″ NPT
- Body Material: Cast Iron
- Trap Type: Float & Thermostatic (F&T)







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