The colors denote how much water a particular hydrant can provide in gallons per minute (GPM). … Jackson Energy Authority hydrants follow the recommended NFPA Color Coding for flow and the adopted chrome silver for hydrant body color.
Why are fire hydrants GREY?
In some places, the tops of fire hydrants are painted different colours to let firefighters know how many gallons per minute, or GPM, a hydrant is able to deliver. The higher the GPM, the better the hydrant will be at fighting bigger fires. Blue usually marks the highest GPM, and red the lowest!
Why are fire hydrants white now?
Though the NFPA suggests that the body of the fire hydrant be painted chrome yellow, some departments use the body to identify ownership or uses of the hydrant. … White to show the hydrant is a Public system hydrant. Yellow for a Private hydrant connected to a public water system.
What determines the color of fire hydrants?
The tops of hydrants are painted in colors to indicate how much flow they can produce in gallons per minute (gpm). Some older hydrants have been reclassified to a different flow rating. Most of the hydrants in the downtown area have been upgraded to “Blue” (the highest rating).
What does a purple hydrant mean?
Violet means the water comes from a lake or pond. While most areas follow this color scheme, some choose to make up their own system. Either way, fire hydrants may stick out like a sore thumb but those bright colors are chosen with your safety in mind.
How much PSI is in a fire hydrant?
Fire hydrants are flow-tested at a residual pressure of 20 psi; therefore, firefighters should understand the typical flow rates of fire hydrants at that pressure.
Are fire hydrants connected to drinking water?
Fire hydrants are connected to the drinking water distribution system which means that the water that comes out of the hydrants to be used to fight fires is the same high quality treated water that comes out of your faucet at home. … They use special wrenches and tools to open the fire hydrants.