Which device may be used to meet water delivery requirements to the inspection test valve?

The device that is most appropriately used to meet water delivery requirements to the inspection test valve is the quick opening device. This device is specifically designed to allow rapid flow of water into the system when testing or inspecting fire protection systems. During tests, particularly for fire sprinkler systems, it is essential to have immediate water availability to accurately assess system pressures and ensure that the system functions as intended.

A quick opening device helps facilitate this process by minimizing the time it takes for water to reach the test valve, which is crucial for both efficiency and safety during inspections. The immediate availability of water allows for thorough testing to ensure that the entire fire protection system is operational and complies with relevant codes and standards.

In contrast, the other options would not provide the same level of performance or functionality for this specific purpose. Control valves are typically used for managing flow rather than enabling quick access to water for testing. Drain valves are primarily designed for expelling water from the system, while sprinkler heads are the outlets that disperse water, not devices that manage water delivery for testing. Thus, the quick opening device serves a specialized role in ensuring that inspection test valves receive water promptly, aligning with the operational needs of fire protection system assessments.