What is the take-off (t/o) value for a 14-inch long turn of 90 degrees?

The take-off (t/o) value represents the length of the pipe that needs to be considered when fitting a pipe into a turn, particularly at a elbow or bend. For a 14-inch long turn of 90 degrees, the dimensions of the fitting must account for the radius of the turn as well as the straight pipe length before and after the fitting.

In designing piping systems, especially in high-pressure applications, correctly calculating the take-off value is critical for ensuring proper alignment and structural integrity. The take-off for a long radius elbow is generally longer than the length of the elbow’s centerline because you need to account for the interior shaping that allows for smoother flow and reduced turbulence.

In this case, the take-off value of 21 inches typically arises from factoring in that the 14-inch bend has an extended length to match its radius, which is designed to maintain effective flow conditions. It is common practice in pipe fitting design to use standardized take-off values, and the 21 inches reflects this standard for a long radius, 90-degree elbow.