What is the required branch size from a 4-inch main line for NH3?

The required branch size from a 4-inch main line for ammonia (NH3) is typically established based on flow requirements and pressure drop considerations in piping systems. Using a pipe size of 2.5 inches for the branch provides an effective balance between fluid flow capacity and minimizing pressure loss.

In ammonia systems, it's essential to maintain sufficient flow to ensure efficient operation while avoiding excessive pressure drop that can lead to operational inefficiencies or hazards. A 2.5-inch branch allows for adequate flow while matching the size of the main line for effective distribution.

This choice reflects standard practices in pipeline design where optimizing flow in relation to pipe size is crucial for maintaining system integrity and performance.

Other sizes, while they might seem practical for specific applications, would not support the same flow efficiency or could lead to issues related to pressure and flow dynamics in ammonia systems.