Transcription of Engineering & Design Data Engineering & Design Data
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Engineering & Design Data Engineering & Design Data
2012 Georg Fischer Harvel LLC 300 Kuebler Road, Easton, PA 18040 610-252-7355 Fax: 610-253-4436 & CPVC Corrosion Resistant Industrial Pressure PipeEngineering & Design DataEngineering & Design DataHydraulic ShockHydraulic shock is the term used to describe the momentary pressure rise in a piping system which results when the liquid isstarted or stopped quickly. This pressure rise is caused by themomentum of the fluid; therefore, the pressure rise increases withthe velocity of the liquid, the length of the system from the fluidsource, or with an increase in the speed with which it is started orstopped. Examples of situations where hydraulic shock can occurare valves, which are opened or closed quickly, or pumps, whichstart with an empty discharge line.
Williams & Hazen formula. Where: f = Friction head in feet of water per 100 feet d =Inside diameter of pipe in inches g = Flowing gallons per minute C = Constant for inside roughness of the pipe (C = 150 for thermoplastic pipe) The nomograph is used by lining up values on the scales by means of a ruler or straight edge. Two independent
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