Float & Thermostatic Steam Trap - How It Works

- On start up, the thermostatic air vent allows air to bypass main valve.
Without this air binding may occur.
- Condensate reaches trap.
Float raises and lever mechanism opens main valve. Hot condensate
closes air vent. Condensate is discharged through the main valve
and out to drain.
- When steam arrives the float will drop and
the main valve and thermostatic vent will shut trapping the dry
saturated steam .The main valve is always below water level,
preventing leakage of live steam.