A post indicator valve (PIV) is used to open or close the water supply to fire protection systems in large buildings. It consists of a conventional gate on the fire system water main with a raised post that protrudes above ground level or from a wall. The valve actuator and a visual indicator of the valve status are housed at the top of the post.
This arrangement allows the valve to be opened and closed easily and for its position to be clearly seen. The three main types- ground, pedestal, and wall- are installed in different configurations and orientations.

PIV is an indicate type control valve which install to water supply line, easy to confirm opening / closing conditions through indicating window. Gate valve is NRS type for designed with minimized weight and easy to installation.