Which component of a Double Check Valve Assembly is NOT mentioned?

A Double Check Valve Assembly is a backflow prevention device that is essential for protecting the potable water supply from contamination. This assembly typically consists of two main check valves arranged in series, ensuring that if one check valve fails to close, the other can still provide protection.

The first option indicates the presence of two shut-off valves, which are necessary for isolating the assembly during maintenance or testing. The second option mentions four test cocks, which are critical for testing the performance of the check valves and ensuring they function properly. Two independently acting check valves make up the core function of the assembly to prevent backflow.

In this context, the correct answer signifies that a pressure gauge is not a standard component of the Double Check Valve Assembly. While pressure gauges are important for monitoring system pressure in various plumbing applications, they are not typically included in this specific assembly where backflow prevention is the primary focus. Understanding the components of a Double Check Valve Assembly is crucial for water operators to ensure compliance with safety standards and effective water quality management.