What is the minimum connection size for a control line take-off?

The minimum connection size for a control line take-off is determined by industry standards and best practices that ensure proper functionality and compatibility with the system being utilized. A 1/2 inch connection size is often specified because it provides a balance between adequate flow capacity and maintaining the pressure required for control lines. This size reduces the risk of restrictions in the flow and allows for reliable operation of the control system.

The 1/4 inch and 3/8 inch sizes are typically too small, potentially leading to inadequate flow for the sensors or controllers connected to the control line. While a 3/4 inch size could work, it is generally excessive for most control line applications, potentially leading to unnecessary complications or cost increases without providing additional benefit. Thus, a 1/2 inch connection is optimized for performance and practical use in most scenarios.