Xylem 404271 Hoffman Specialty FT015I-4 Float & Thermostatic Steam Trap 1" NPT 15 PSI

The Hoffman Specialty 404271 FT015I-4 is a 1-inch NPT in-line float and thermostatic steam trap designed for 15 PSI maximum operating pressure. Hoffman Specialty is a Xylem brand offering a wide range of steam and hydronic systems products.

Operating Principle:

Float and thermostatic traps operate on the density principle, with a thermostatic vent in the top that allows free passage of air during start-up and closes near saturation temperature. Condensate fills a float chamber causing the float to rise, which through a lever mechanism pulls a valve off its seat and opens the discharge valve orifice, providing modulation to handle light or heavy condensate loads.

Key Features:

• In-line horizontal piping connections simplify installation and maintenance with removable cover for easy in-line service
• Durable cast iron body provides long service life
• Stainless steel valve trim, floats and air vents increase service life
• Straight-through piping F&T trap can be used to replace low pressure bucket traps
• Continuous drainage design for low, medium, and high pressure steam mains

Primary Applications:

• Heating main drip traps and shell & tube heat exchangers
• Tank heaters with modulating temperature regulators and unit heaters requiring fast venting
• Air handling coils, air blast-heating coils, and air pre-heat coils
• Steam humidifiers, steam separators, and autoclaves

These traps are designed for service on heat exchange equipment where there is a need to vent air and non-condensable gases quickly, and are recommended for modulating pressures where widely varying loads are present.