![]() Typically shaped as a pentagon, the stem nut will turn the operating stem of the hydrant and raise the valve to an 'open' position when turned with a hydrant wrench. The stem nut is the key to operating the valve within the hydrant. Louis, for instance, have hydrants with only a single pumper outlet. While the typical hydrant described above is the most common type, other combinations certainly exist - downtown St. ![]() The size and number of the outlets serve as one limit to the capacity of the hydrant. The latter outlet gets its name as it is often the preferred choice for the fire department to connect and feed pumper trucks. NFPA 291, the Recommended Practice for Fire Flow Testing and Marking of Hydrants, suggests hydrant colors as Red/Class C, Orange/Class B, Green/Class A, and Light Blue/Class AA for Less than 500 gpm, up to 1,000 gpm, up to 1,500 gpm, and 1,500 gpm and more, respectively (NFPA 291-2019 5.2.1.2).Ī traditional dry barrel fire hydrant contains three outlets: two 2 1/2-inch (65 mm) side outlets and a single 4 1/2-inch (115 mm) or 6-inch (150 mm) "pumper" outlet. Some jurisdictions paint hydrants or hydrant bonnets to identify the capacity of the hydrant. Because hydrants need to be quickly accessed during an active fire, hydrant outlets need to be installed tall enough to allow a full-revolution of a hydrant wrench from the lowest outlet. ![]() While the dimension from the bonnet to the flange of the hydrant is standard, the height of the flange becomes important during installation as it determines the height of the outlets. The flange at the base of the hydrant is the point of connection for the hydrant to the rest of the barrel. Our friction loss tool can be helpful in estimating loss through these pipes. While older systems often connect hydrants with 4-inch branch pipe, a minimum of 6-inch pipe should be used to limit pressure loss and permit greater flow capacity. The branch pipe serving the hydrant from the city main is one restriction for the overall capacity of a hydrant. If it is missing that is a major hazard and the fire department in the area should be notified.The conical cap for the hydrant, or bonnet, holds the operating stem nut in place and protects the hydrant from mechanical damage and water penetration. Firefighters say that neighbors should look out for the brass piece at the top of the hydrant. The owner of the home was not there at the time of the fire. It is time, it is expense, it's money and it is life safety and that is the primary concern," said Capt. Burkart says that crews are going to start carrying spare parts with them, but who knows how much that will help because time is everything.Ĭrews say that when a house is burning they don't have the time to mess around with a fire hydrant just to make sure it works. "That is a very frightening feeling when you do not have adequate resources toĭo your job," said Capt. Because there was no water they could not knock the fire out to get inside. Is $8.00 worth a child or a mother, a father, a brother or a sisters life? It is not just the property, there could of been somebody in there," adds Gallegos.Įven though no one was home firefighters thought someone might be trapped inside. They stole them so they could sell them for a couple of bucks. Three fire hydrants in the area had their brass tops stolen by crooks. You think you are safe because the firefighters are here and then you find out that you are not," said neighbor Kim Gallegos. "It was terrifying watching the fire grow bigger, watching it move towards the house and the possibility of the trees and seeing the ashes. "They were standing out here and there was nothing that they could do," said Williams. HESPERIA Neighbor Myrtle Williams says all firefighters could do was watch her neighbor's house burned to the ground.Ĭlick in the Eyewitness News story window above to watch Rob McMillan's report from the scene of the fire, including an interviews with upset neighbors.
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