What is the take-off of 8" in 45° butt weld ells?

In piping terminology, "take-off" refers to the length that a fitting or elbow will add to a straight run of pipe. For an 8" pipe size, when dealing with 45° butt weld elbows, the take-off is calculated based on the nominal diameter and the angle of the elbow.

A 45° elbow is designed to create a change in direction without significantly affecting the flow of the material within the pipe. The take-off for a standard 45° elbow typically measures approximately 5 inches for an 8" nominal pipe size. This figure may vary slightly based on manufacturer specifications, but the standard value used in the industry for this specific size and angle confirms that 5 inches is indeed the correct take-off measurement.

Understanding this detail is essential for accurate pipe layout and fitting installation. Knowing the proper take-off length allows for precise fabrication and assembly of piping systems, preventing issues such as misalignment or inadequate flow configuration.