Xylem 401458 Model 43 Steam Convector Air Vent 1/4" NPT 6 PSI

The Xylem-Hoffman Specialty 401458 Model 43 is a non-vacuum air valve designed for efficient operation in small steam heating systems. This float-type convector steam vent automatically releases trapped air from radiators and convectors to optimize system performance and eliminate air pockets that can reduce heating efficiency.

Key Features:

• Single non-adjustable port for consistent venting performance
• 1/4" NPT male straight shank for direct installation
• Telescopic siphon tube with angled cut design ensures proper water drainage and prevents accumulation
• Float-type mechanism provides reliable automatic air venting
• Maximum operating pressure: 6 psig (0.4 bar) - drop away pressure
• Maximum pressure rating: 10 psig (0.7 bar)
• Durable construction designed for years of reliable service

Ideal for residential and light commercial steam radiators and convector systems, the Model 43 helps eliminate banging pipes, cold spots, and uneven heating caused by trapped air. The compact design and straightforward installation make it a practical solution for maintaining optimal steam system efficiency.