The SEALFAST 4" X 3" Aluminum Vapor fitting with poppet is engineered for efficient vapor transfer in various applications. Constructed from lightweight yet durable aluminum, this fitting ensures excellent resistance to corrosion and wear. The 4" diameter allows for optimal flow, while the 3" connection provides compatibility with standard systems. The integrated poppet valve enhances safety by preventing backflow. Ideal for industrial and commercial use, this fitting meets stringent industry standards for performance and reliability.