Barnes & Jones 134S-3/4 Straight Thermostatic Steam Radiator Trap

The Barnes & Jones 134S-3/4 Straight Thermostatic Steam Radiator Trap is engineered for reliable condensate removal in low-pressure steam heating systems while preventing the escape of live steam. Designed with a straight-body configuration, this thermostatic radiator trap automatically vents air and condensate during system startup, then closes when steam reaches the trap to maximize heating efficiency and system performance.

Manufactured with a heavy-duty forged brass body and corrosion-resistant internal components, the 134S delivers long-lasting durability in residential, commercial, and institutional steam heating applications. Its factory-calibrated cage unit is tested under live steam conditions to ensure consistent, dependable operation and simplified future maintenance.

Features

• 3/4" NPT threaded connections
• Straight pattern for inline radiator installations
• Thermostatic operation automatically removes condensate and air
• Prevents live steam loss for improved system efficiency
• Heavy-duty forged brass construction
• Corrosion-resistant seat and plug for extended service life
• Factory calibrated and tested under live steam
• Replaceable cage unit simplifies maintenance and repairs

Specifications

• Brand: Barnes & Jones
• Model: 134S
• Product Type: Steam Trap
• Condition: New
• Trap Type: Thermostatic Radiator Trap
• Connection Size: 3/4"
• Connection Type: NPT Threaded
• Body Pattern: Straight
• Body Material: Forged Brass
• Maximum Operating Pressure: 25 PSIG
• Application: Low-pressure steam radiator and heating systems