Which pressure is used for the initial cross-connection test?

Which pressure is used for the initial cross-connection test?

• A. 14.7 psig
• B. 8.0 psig
• C. 12.0 psig
• D. 16.0 psig

Answer: (A)

Starting the cross-connection test at 14.7 psig gives you a standard, moderate pressure that reliably reveals leaks or unwanted connections without over-stressing the system. This level is commonly used as the initial step because it is high enough to stress the piping enough to show problems, yet still within safe limits for most components and configurations. If the system holds at this pressure, you can move on to higher testing stages as required by the procedure. Pressures that are much lower may not expose small leaks, while a higher initial pressure could introduce risks or complicate interpretation, so 14.7 psig strikes a practical balance.

Starting the cross-connection test at 14.7 psig gives you a standard, moderate pressure that reliably reveals leaks or unwanted connections without over-stressing the system. This level is commonly used as the initial step because it is high enough to stress the piping enough to show problems, yet still within safe limits for most components and configurations. If the system holds at this pressure, you can move on to higher testing stages as required by the procedure. Pressures that are much lower may not expose small leaks, while a higher initial pressure could introduce risks or complicate interpretation, so 14.7 psig strikes a practical balance.