In a pre-action system, a deluge valve can control up to how many sprinklers?

In a pre-action system, a deluge valve can control up to how many sprinklers?

• A. 500
• B. 1000
• C. 750
• D. 1500

Answer: (B)

In a pre-action system, the deluge valve is what releases water into the piping network once a triggering event occurs, making sure the protected area is ready to discharge to the sprinklers. The valve’s capacity is tied to how many sprinklers it can feed without dropping pressure or exceeding its design flow, and for typical pre-action designs it is sized to control up to about 1,000 sprinklers. This reflects common valve ratings and the practical water supply and piping arrangements used in standard installations. If more sprinklers are needed, engineers usually use additional deluge valves or a larger main supply to keep the system responsive and balanced. The other options fall outside typical single-valve capacities, either undersizing the valve’s practical reach or exceeding common valve and supply limits.

In a pre-action system, the deluge valve is what releases water into the piping network once a triggering event occurs, making sure the protected area is ready to discharge to the sprinklers. The valve’s capacity is tied to how many sprinklers it can feed without dropping pressure or exceeding its design flow, and for typical pre-action designs it is sized to control up to about 1,000 sprinklers. This reflects common valve ratings and the practical water supply and piping arrangements used in standard installations. If more sprinklers are needed, engineers usually use additional deluge valves or a larger main supply to keep the system responsive and balanced. The other options fall outside typical single-valve capacities, either undersizing the valve’s practical reach or exceeding common valve and supply limits.