the water from a fire hydrant comes from the lake.
the water from a fire hydrant comes from the lake.
where does the water from a fire hydrant come from?
lake
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 locate leaks from the sound they make.









































fire hydrants may be used to supply water to riot control vehicles. these vehicles use a high pressure water cannon to discourage rioting.









































section::::construction.
fire hydrant
bullet::::- a fire hydrant 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. before the existence of fire hydrants, a primitive fire suppression system known as "fire plugs" consisted of burying a wooden water pipe (often no more than a hollowed out log) along the streets for teams of bucket brigades to form and fight fires. wooden pegs would then need to be hammered over fire plugs in order to stop the flow of water. the invention of a post or pillar type fire hydrant is generally credited to frederick graff sr., chief engineer of the philadelphia water works around the year 1801. it had a combination hose/faucet outlet and was of "wet barrel" design with the valve in the top. it is said that graff held the first patent for a fire hydrant, but this cannot be verified due to the fact that the patent office in washington d.c. was burned to the ground in 1836 where all patent records from that time period were destroyed in the process. in 1863, birdsill holly invented the modern version of the fire hydrant. while holly was only one of many involved in the development of the fire hydrant, innovations he introduced are largely responsible for the fire hydrant taken for granted today. in 1869, holly was issued u.s. patent #94749, for an "improved fire hydrant".
timeline of united states inventions (before 1890)