Description
The Xylem-Hoffman Specialty 402004 is a Series 8C Balanced Pressure Thermostatic Steam Trap engineered for efficient, reliable condensate and air discharge in steam heating and process systems. Featuring a straight-pattern body configuration and a 3/4″ NPT connection, this trap is built for straightforward in-line installation and long-term service life.
The balanced pressure thermostatic operating element responds to the temperature differential between steam and subcooled condensate, opening to discharge condensate and non-condensable gases and closing when live steam is present. This design ensures energy-efficient steam system operation by preventing steam loss while continuously venting air and CO₂ — particularly beneficial during system startup.
Key Features
- Series 8C balanced pressure thermostatic operating principle
- 3/4″ NPT straight-pattern body for in-line piping installation
- 125 PSI differential pressure rating for robust steam system performance
- Effective discharge of condensate, air, and non-condensable gases
- Thermostatic element opens on subcooled condensate, closes on steam — minimizing energy loss
- Compact, durable construction suited for commercial and industrial steam heating applications
- Trusted Hoffman Specialty design backed by Xylem engineering standards
Specifications
- Model Number: 8C-S-3-125
- SKU: 402004
- Connection Size: 3/4″ NPT
- Pattern: Straight
- Differential Pressure Rating: 125 PSI
- Trap Type: Balanced Pressure Thermostatic
- Series: 8C
- Brand: Xylem-Hoffman Specialty
Applications
- Steam heating system condensate removal
- Air venting at system startup and during operation
- Unit heaters, heat exchangers, and steam coil drainage
- Commercial and light industrial steam distribution piping






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