What is the take-off for a 6" pipe in a 90° butt weld ell?

The take-off for a 6" pipe in a 90° butt weld ell is defined as the distance from the centerline of the pipe to the centerline of the fitting, which in this case is a 90-degree elbow. For a 6" pipe, the nominal size refers to the inner diameter, and when dealing with fittings, it is common to use the same nominal size for determining take-offs.

In this scenario, the take-off is simply the diameter of the pipe, which is 6 inches. This is because the fitting is designed to accommodate the same nominal size of the pipe. As a result, using the nominal pipe size gives you a direct and straightforward measurement for the fitting's take-off without involving additional calculations or dimensions.

Understanding the context of pipe fittings is essential; fittings are constructed to match their corresponding pipe sizes, thus maintaining consistency in installation practices and ensuring proper flow dynamics.