A. Huntsville Fire & Rescue spokesman Tim Cartwright said a hydrant with a red top will supply less than 500 gallons per minute; orange, 500 to 1,000 gpm; green, 1,000 to 1,500 gpm; and blue, more ...

Fire hydrant caps generally have one of four colors, representing the fire hydrant's class based on its gallons per minute. ... and blue for Class AA, with more than 1,500 gallons per minute.

What Do Fire Hydrant Colors Mean? By ... with 1,000 to 1.499; and blue for Class AA, with more than 1,500 gallons per minute. While these colors are relatively standardized, ...

The code is light blue for an output of 1,500 gallons a minute or more; green for 1,000 to 1,499 gpm; orange for 500 to 999 gpm and red for hydrants that produce less than 500 gpm.

At a minimum, the hydrant can flow 1,500 gallons per minute. “If you have any significant type of fire, you want a light blue colored hydrant. You want the highest amount of flow possible ...

Blue: Hydrants with a flow rate of 1,500 gpm or greater. The universal color scheme helps firefighters, even those who might be arriving from another community, readily determine which hydrant ...

Green: 1000-1500 GPM, for a 4-story house that's 61 by 61 and 40 ft tall. Blue: 1500 GPM or more, for a 4-story house that's 70 by 70 feet and 40 ft tall. Some colors don't always refer to GPM.

What might stick out is the distinct color on the fire hydrant's front steamer port: either light blue, green, orange or red. Advertisement As you could've guessed, the colors mean something.

• Markings – National Fire Protection Association (NFPA) pamphlet 291, Recommended Practice for Fire Flow Testing and Marking of Hydrants, 2013 edition, recommends color-coding for hydrants ...

Green: 1000-1500 GPM, for a 4-story house that's 61 by 61 and 40 ft tall. Blue: 1500 GPM or more, for a 4-story house that's 70 by 70 feet and 40 ft tall. Some colors don't always refer to GPM.