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STPROP.COM feel free to email your bidding packages hereFIRE HYDRANTS REPAIRS AND INSTALLATIONA fire hydrant also known colloquially as a fire plug in the United States or as a johnny pump in New York City, because the firemen of the late 1.Orange County Art Guide Comprehensive online resource for Orange County art shows, art events, artists, galleries and museums in Orange County, Orange County art.Sign Post Installation Orange County' title='Sign Post Installation Orange County' />Johnnies, is an active fire protection measure, and a source of water provided in most urban, suburban and rural areas with municipal water service to enable firefighters to tap into the municipal water supply to assist in extinguishing a fire.Buildings near a hydrant may qualify for an insurance discount since firefighters should be able to more rapidly extinguish a fire on the insured property.The concept of fire plugs dates to at least the 1.This was a time when firefighters responding to a call would dig down to the wooden water mains and hastily bore a hole to secure water to fight fires.The water would fill the hole creating a temporary well, and be transported from the well to the fire via bucket brigades or, later, via hand pumpedfire engines.The holes were then plugged with stoppers, normally redwood, which over time came to be known as fire plugs.The location of the plug would often be recorded or marked so that it could be reused in future fires.This is the source of the colloquial term fire plug still used for fire hydrants today.After the Great Fire of London in 1.It has been claimed that Birdsill Holly invented the fire hydrant, but his 1.Numerous wooden cased fire hydrant designs existed prior to the development of the familiar cast iron hydrant.Although the development of the first above ground hydrant in the USA traces back to Philadelphia in 1.Europe and Asia have existed since the 1.A hose is attached to the fire hydrant, then the valve is opened to provide a powerful flow of water, on the order of 3.Pa 5.This hose can be further attached to a fire engine, which can then use a powerful pump to boost the water pressure and possibly split it into multiple streams.The hose may be connected with a threaded connection or a Storz connector.Care should be taken not to open or close a fire hydrant too quickly, as this can create a water hammer which can damage nearby pipes and equipment.The water inside a charged hoseline causes it to be very heavy and high water pressure causes it to be stiff and unable to make a tight turn while pressurized.OCRegister.Orange County, CA, California and national news, sports, things to do and the best places to eat, business and the Orange County.Since this site was first put on the web in 1999, its popularity has grown tremendously.If the total quantity of material on this site is to continue to grow.Shop exterior sign lights including commercial gooseneck lighting and other commercial architectural lighting online.Various commercial outdoor sign lighting styles.Setup 123 Avi To Gif Converter Online there.When a fire hydrant is unobstructed, this is not a problem, as there is enough room to adequately position the hose.Most fire hydrant valves are not designed to throttle the water flow they are designed to be operated full on or full off.The valving arrangement of most dry barrel hydrants is for the drain valve to be open at anything other than full operation.Usage at partial opening can consequently result in considerable flow directly into the soil surrounding the hydrant, which, over time, can cause severe scouring.A hose with a closed nozzle valve, or fire truck connection, or closed gate valve is always attached to the hydrant prior to opening the hydrants main valve.When a firefighter is operating a hydrant, appropriate personal protective equipment, such as gloves and a helmet with face shield, are typically worn.High pressure water coursing through a potentially aging and corroding hydrant could cause a failure, injuring the firefighter operating the hydrant or bystanders.In most jurisdictions it is illegal to park a car within a certain distance of a fire hydrant.In North America the distances are commonly 3 to 5 m or 1.In the UK, yellow lines are used to keep cars from parking over underground hydrants.Parking restrictions are sometimes ignored especially in cities where available street parking is scarce, however these laws are usually enforced.The rationale is that hydrants need to be visible and accessible in an emergency.To prevent casual use or misuse, the hydrant requires special tools to be opened, usually a large wrench with a pentagon shaped socket.Vandals sometimes cause monetary loss by wasting water when they open hydrants.Such vandalism can also reduce municipal water pressure and impair firefighters efforts to extinguish fires.Sometimes those simply seeking to play in the water remove the caps and open the valve, providing residents a place to play and cool off in summer.However, this is usually discouraged as residents have been struck by passing automobiles while playing in the street in the water spray.In spite of this, some US communities provide low flow sprinkler heads to enable residents to use the hydrants to cool off during hot weather, while gaining some control on water usage.In most US areas, contractors who need temporary water may purchase permits to use hydrants.The permit will generally require a hydrant meter, a gate valve and sometimes a clapper valve if not designed into the hydrant already to prevent back flow into the hydrant.Additionally, residents who wish to use the hydrant to fill their in ground swimming pool are commonly permitted to do so provided they pay for the water and agree to allow firefighters to draft from their pool in the case of an emergency.Municipal services, such as street sweepers and tank trucks, may also be allowed to use hydrants to fill their water tanks.Often sewer maintenance trucks need water to flush out sewer lines, and fill their tanks on site from a hydrant.If necessary, the municipal workers will record the amount of water they used, or use a meter.Since fire hydrants are one of the most accessible parts of a water distribution system, they are often used for attaching pressure gauges or loggers or monitor system water pressure.Automatic flushing devices are often attached to hydrants to maintain chlorination levels in areas of low usage.Hydrants are also used as an easy above ground access point by leak detection devices to detect locate leak from the sound they make.In areas subject to freezing temperatures, only a portion of the hydrant is above ground.The valve is located below the frost line and connected via a riser to the above ground portion.A valve rod extends from the valve itself up through a seal at the top of the hydrant, where it can be operated with the proper wrench.This design is known as a dry barrel hydrant, in that the barrel, or vertical body of the hydrant, is normally dry.A drain valve underground opens when the water valve is completely closed this allows all water to drain from the hydrant body to prevent the hydrant from freezing.In warm areas, hydrants are used with one or more valves in the above ground portion.Unlike cold weather hydrants, it is possible to turn the water supply on and off to each port.This style is known as a wet barrel hydrant.Both wet and dry barrel hydrants typically have multiple outlets.Wet barrel hydrant outlets are typically individually controlled, while a single stem operates all the outlets of a dry barrel hydrant simultaneously.Thus, wet barrel hydrants allow single outlets to be opened, requiring somewhat more effort but simultaneously allowing more flexibility.A typical U.
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