Trane B3AR 21 B-3 Steam Trap

Description:

The Trane B3AR21 B-3 trap with removable brass seat and plunger is used in low-pressure steam heating systems to automatically discharge condensate while preventing live steam from escaping. Commonly installed in Trane commercial steam heating systems, radiators, unit heaters, heat exchangers, and steam distribution equipment requiring a thermostatic steam trap rated for 25 PSI operation. Maintenance teams, HVAC service technicians, and steam system specialists use this steam trap for replacement, repair, retrofit, and restoration of commercial steam heating systems.

Applications:

The Trane B3AR21 B-3 steam trap is designed to remove condensate and air from steam systems while retaining live steam for efficient heat transfer and system performance. It is commonly used in commercial buildings, institutional heating systems, industrial steam distribution networks, heat exchangers, radiators, and process heating equipment where reliable condensate removal and energy-efficient steam operation are essential.

Technical Specifications:

• Manufacturer Part Number (MPN): B3AR21
• Manufacturer: Trane
• Product Type: Thermostatic Steam Trap
• Trap Series: B-3
• Trap Type: Thermostatic Steam Trap
• Maximum Operating Pressure: 25 PSI
• Seat Type: Removable Brass Seat
• Plunger Type: Brass Plunger
• Body Material: Brass
• Function: Condensate Removal and Steam Retention
• Connection Type: Threaded NPT
• Compatible Equipment: Trane Steam Heating Systems, Radiators, Heat Exchangers, and Unit Heaters
• Installation Type: Inline Steam Piping
• Application Environment: Commercial Steam Heating Systems, Industrial Process Heating, and Steam Distribution Networks

Common Replacements:

• Barnes & Jones 3442 Cage Unit for Trane B-3 Trap
• Tunstall TFTR-2417 Steam Trap Capsule
• Barnes & Jones 4323 Cage Unit for Trane Steam Trap