Xylem-Hoffman Specialty 404271 1″ NPT 15 PSI Series I Cast Iron F&T Steam Trap FT015I-4

Description

The Xylem-Hoffman Specialty 404271 is a Series I Cast Iron Float & Thermostatic (F&T) Steam Trap designed for reliable, continuous condensate drainage in low-pressure steam heating systems. Engineered to handle both condensate and non-condensable gases simultaneously, this trap combines a float mechanism with a thermostatic air vent for superior system efficiency and reduced energy waste.

Product Overview

The Model FT015I-4 delivers dependable performance in a wide range of steam heating and process applications. The cast iron body provides long-lasting durability in demanding hydronic and steam environments, while the integrated thermostatic air vent ensures automatic venting of air and CO₂ at startup and during operation — preventing air binding and keeping your system running at peak efficiency.

Key Specifications

• SKU / Part Number: 404271
• Model: FT015I-4
• Series: Series I
• Connection Size: 1″ NPT
• Maximum Operating Pressure: 15 PSI
• Orifice Size: .253″
• Body Material: Cast Iron
• Trap Type: Float & Thermostatic (F&T)
• Air Vent: Thermostatic Air Vent Included

Features & Benefits

• Continuous condensate discharge — float mechanism responds instantly to condensate load changes
• Integrated thermostatic air vent automatically purges air and non-condensable gases for faster system warm-up
• Cast iron construction offers robust durability for long service life in steam heating systems
• 1″ NPT connections for straightforward installation into standard steam piping
• 15 PSI maximum working pressure suitable for low-pressure steam heating applications
• .253″ orifice sized for optimal condensate handling capacity
• Reduces energy loss by preventing steam blow-through and air binding

Typical Applications

• Low-pressure steam heating systems in commercial and industrial buildings
• Unit heaters, heat exchangers, and steam coils
• Drip legs and steam distribution mains
• Hydronic and steam process equipment

Brand

Hoffman Specialty, a brand of Xylem, has been a trusted name in steam and hydronic system components for over a century. Their F&T steam traps are recognized throughout the industry for reliability, precision engineering, and ease of maintenance.