Anvil 0312822703 Metal Pipe Union Straight, 1 in x 1 in, Female NPT x Female NPT, Class 300, 2000 psi @ 150° F, Malleable Iron, Black

Steel and iron threaded high-pressure pipe fittings screw onto high-pressure pipe of the same size and material. Threaded pipe fittings are easier to disassemble than unthreaded fittings for maintenance or temporary installations. They require a thread sealant, such as PTFE tape, to create a leak-proof connection.