This is a Composite PTC Inline Branch Manifold Union Fitting with a 1/2" Outer Diameter and 3/8" NPT Male thread. It's categorized under Composite PTC - Standard & Compact Fittings and functions as a Male Branch Manifold Connector. The body is made of Composite(PBT)/Nickel-Plated Brass, compatible with Air fluid, and operates within 0 to 150 PSI pressure and 32°F to 140°F (0°C to 60°C) temperature. It features NBR (Acrylonitrile Butadiene Rubber) O-Ring and Packing Material, POM (Polyoxymethylene Plastic) Back Ring and Sleeve, Stainless Steel Lock Claws, and a Nickel-Plated Zinc Alloy Collar.