Where is a common location for a post indicator valve?

Where is a common location for a post indicator valve?

• A. On an exterior wall
• B. Next to the water meter
• C. On the main system riser
• D. In a utility or mechanical room

Answer: (A)

A post indicator valve is placed where firefighters can quickly see and read its open or closed status from outside the building. The most common location is on an exterior wall at the point where the water service enters, or where the fire protection line connects to the public main. This exterior placement gives rapid external access and lets responders confirm water supply to the standpipe or sprinkler system without having to enter the structure. Interior options like next to the water meter, on the main system riser, or in a utility or mechanical room are less practical for quick visibility and access during an emergency, so the exterior-wall location is standard.

A post indicator valve is placed where firefighters can quickly see and read its open or closed status from outside the building. The most common location is on an exterior wall at the point where the water service enters, or where the fire protection line connects to the public main. This exterior placement gives rapid external access and lets responders confirm water supply to the standpipe or sprinkler system without having to enter the structure. Interior options like next to the water meter, on the main system riser, or in a utility or mechanical room are less practical for quick visibility and access during an emergency, so the exterior-wall location is standard.