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From this test hydrant, a static pressure and a residual pressure will be measured. The other hydrant, known as the flow hydrant, is usually the nearest hydrant away from the test hydrant. The flow hydrant is fitted with a diffuser device containing a pitot tube that measures stagnation pressure in the middle of the stream while the hydrant is ...
The user (most likely a fire department) attaches a hose to the fire hydrant, then opens a valve on the hydrant to provide a powerful flow of water, on the order of 350 kilopascals (51 psi); this pressure varies according to region and depends on various factors (including the size and location of the attached water main).
This infobox is designed to suit the wide variation in terminology between countries and between individual fire services. There is an extensive list of pre-named parameters for leadership and apparatus, which are suited to predominantly North American terminology, but generic parameters which can be adapted for individual requirements are also available.
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Effect of a pressure surge on a float gauge. Hydraulic shock (colloquial: water hammer; fluid hammer) is a pressure surge or wave caused when a fluid in motion is forced to stop or change direction suddenly: a momentum change.
Persons detecting the odor must evacuate the area and abstain from using open flames or operating electrical equipment, to reduce the risk of fire and explosion. As a result of the Pipeline Safety Improvement Act [ 3 ] of 2002 passed in the United States, federal safety standards require companies providing natural gas to conduct safety ...
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