The initial cross-connection test is conducted with the system pressurized to what value?

The initial cross-connection test is conducted with the system pressurized to what value?

• A. 7.5 psig
• B. 10.0 psig
• C. 20.0 psig
• D. 14.7 psig

Answer: (D)

The test uses a known, moderate pressure so you can reliably evaluate the device’s ability to hold pressure under typical service conditions. The initial cross-connection test is performed with the system pressurized to 14.7 psig because this value provides a standard reference that is high enough to reveal leaks but not so high as to stress the equipment or create readings that aren’t representative of normal operation. Pressures that are too low may fail to challenge the backflow preventer and miss leaks, while a higher pressure could exceed normal operating conditions and skew results.

The test uses a known, moderate pressure so you can reliably evaluate the device’s ability to hold pressure under typical service conditions. The initial cross-connection test is performed with the system pressurized to 14.7 psig because this value provides a standard reference that is high enough to reveal leaks but not so high as to stress the equipment or create readings that aren’t representative of normal operation. Pressures that are too low may fail to challenge the backflow preventer and miss leaks, while a higher pressure could exceed normal operating conditions and skew results.