Among a service tech’s many responsibilities is to pipe together refrigeration system components. When piping a system together, a technician must decide which pipe size to use — it’s not always as simple as it may appear.
A general knowledge of piping practices is required to make an intelligent choice. Normally, each of the system components has a stub connection of a specific pipe size. Using the stub connection size as a guide to determine which pipe size to use is generally not a good practice.