What is the take-off for a 6"x3" reducing long radius butt weld 90° ells?

For a 6"x3" reducing long radius butt weld 90° ell, the take-off is determined by the larger diameter, which is 6 inches, plus the dimension of the smaller diameter, which is 3 inches.

In the context of pipefitting, the take-off generally refers to the length of the pipe or fitting needed to complete a specific configuration, and for a 90-degree elbow, this is typically calculated using the formula:

Take-off = 1.5 times the diameter of the larger pipe, plus any additional allowances that may be necessary for the reduction.

Using this understanding, the take-off for the 6-inch diameter (larger side of the ell) would be approximately 1.5 times this diameter, which is 9 inches. This measurement effectively accounts for the curvature of the elbow as well as the changes in pipe size.

Therefore, the correct answer reflects the standard calculations used for determining the take-off for fittings in piping systems, particularly when reductions and bends are involved.