90 Degrees Elbow, Malleable Iron, Class Class 300, For Pipe Schedule 80, 3 in, Female, NPT, 3 in, Female, NPT, 1,000 psi @ 150 Degrees F Maximum Operating Pressure This Anvil(R) elbow features thicker walls that can withstand higher pressures than class 150 fittings. Model is suitable for air, water, oil, natural gas, and steam.