In hydrant systems, a Post Indicator Valve (PIV) serves what function?

In hydrant systems, a Post Indicator Valve (PIV) serves what function?

• A. Indicates whether the valve is open or closed
• B. Provides additional flow capacity
• C. Drains water from the barrel
• D. Steps to power the pump

Answer: (A)

The Post Indicator Valve shows the status of the buried main valve, indicating whether it is open or closed. Since the valve is underground, the indicator on the post provides a visible cue above ground so firefighters and operators know if water can flow into the hydrant system. This helps ensure the water supply is available when needed and prevents confusion during response or testing. It does not add extra flow capacity, drain the barrel, or power the pump.

The Post Indicator Valve shows the status of the buried main valve, indicating whether it is open or closed. Since the valve is underground, the indicator on the post provides a visible cue above ground so firefighters and operators know if water can flow into the hydrant system. This helps ensure the water supply is available when needed and prevents confusion during response or testing. It does not add extra flow capacity, drain the barrel, or power the pump.