In both 3750 and 4000 series vans the 1/2″ Galv Pipe Tee is used on the inflow of the water heater. This tee features three 1/2 inch National Pipe Thread (NPT) connections, allowing it to join three male-threaded pipes or fittings at a 90-degree angle. This makes it ideal for creating branch lines in a piping system. Constructed from high-quality malleable iron, this tee is galvanized to resist corrosion and rust, ensuring durability and longevity in both residential and commercial settings. The galvanized coating also makes it suitable for use in potable water systems, as it complies with NSF 61 standards. The fitting is rated for a pressure class of 150 pounds per square inch (psi) and can withstand temperatures ranging from -20°F to 550°F.