Xylem 40 Automatic Steam Vent 1/8" NPT 10 PSI Float Type

The Xylem Model 40 is a non-adjustable automatic air vent designed for steam heating systems. This compact float-type vent features a 1/8" NPT connection and operates at pressures up to 10 PSI, making it ideal for low-pressure steam applications in residential and light commercial heating systems.

Key Features:

• 1/8" NPT threaded connection for easy installation
• Non-adjustable float mechanism for reliable automatic operation
• 10 PSI maximum working pressure rating
• Automatically releases trapped air from radiators and heating pipes
• Durable construction for long-lasting performance
• Closes automatically when steam reaches the vent

This automatic air vent is essential for eliminating air pockets that prevent proper steam circulation and heat distribution. The float-operated design ensures the vent closes when steam is present, preventing steam loss while efficiently purging air from the system during startup and operation.