Xylem 401455 Hoffman 41 Convector Steam Vent 1/8" NPT 6 PSI

The Xylem 401455 Hoffman Model 41 is a non-vacuum air valve specifically designed for convector steam heating systems. This float-type steam vent is engineered to efficiently release air from small steam systems while preventing steam loss, ensuring optimal heating performance in residential and light commercial applications.

Key Features:

• 1/8" NPT straight shank connection for easy installation
• Single non-adjustable port for consistent venting performance
• Telescopic siphon tube with angle cut design ensures proper drainage
• Maximum operating pressure of 6 PSI (10 PSI maximum pressure rating)
• Float-type construction for reliable, automatic operation
• Specifically designed for convector steam vents in one-pipe steam systems

The Hoffman Model 41 features a specialized design that prevents the water spitting issues commonly experienced with convector systems. The telescopic siphon tube with its angle-cut end ensures condensate drainage while the float mechanism automatically opens to release trapped air during system startup and closes when steam reaches the vent. This proven design has been trusted by heating professionals for decades to maintain quiet, efficient steam heating operation.