Steam Traps, Float, Thermostatic, Thermodynamic, Inverted Bucket on Pipe System

After fix the computer because of data corrupt, so I have to installed the new one. And now Piping & Fabrication ready to continue.

TRAPS
Steam Traps

The function of a steam trap is to discharge condensate from steam piping or steam heating equipment without permitting live steam to escape. Some principal types of steam traps are:

• Float
• Thermostatic
• Thermodynamic
• Inverted bucket

FIGURE A2.5 Float steam trap

trap strainer unit

balanced pressure thermostatic trap

The float type (Fig. A2.5) consists of a chamber containing a float-and-arm mechanism which modulates the position of a discharge valve. As the level of condensate in the trap rises, the valve is opened to emit the condensate. This type of valve tends to discharge a steady stream of liquid since the valve position is proportional to the rate of incoming condensate. Because the discharge valve is below the waterline, float-type steam traps must employ a venting system to discharge noncondensable gases. This is generally accomplished with a thermostatic element which opens a valve when cooler noncondensable gases are present but closes the valve in the presence of hotter steam. The thermostatic steam trap (Fig. A2.6) contains a thermostatic element which opens and closes a valve in response to fluid temperature. Condensate collected upstream of the valve is subcooled, cooling the thermostat, which, in turn, exposes the discharge port. When the cooler condensate is discharged and the incoming condensate temperature approaches the saturation temperature, the thermostat closes the discharge port. Because of its principle of operations, the thermostatic trap operates intermittently under all but maximum condensate loads.

The inverted bucket steam trap (Fig. A2.7)