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Flow Testing

 

ESL conducts its own flow testing, ensuring accurate complete results.

 

Hydraulic calculations and modeling begin with fire hydrant flow test results. These results must be accurate and complete.  A flow test is a snap shot view of a water system, a way to confirm the real life operation of the tanks, pumps and water lines.   If you only get three numbers from a flow test, static pressure residual pressure and flow,  you do not have a complete test.

Flow tests should include all the following information:

  • Hydraulic gradient of the system at the
  • time of the test
  • Low hydraulic gradient of the system
  • Direction of municipal flow (determines effective
  • point of test)
  • Hydrant locations
  • Number of outlets flowed
  • Outlet size & exit coefficient
  • Elevation of gauge hydrant
  • Static pressure, before and after flow
  • Residual pressure during test
  • Pitot pressure during test
  • Time and date of test
  • Who conducted the test and who
  • witnessed the test

 

 

 

 

flow testing

 

 

flow testing

 

 

 

Without this information you don’t have the tools to determine if the test is valid.  Why conduct a test, wasting water and money, if it’s not a complete view of the system you are testing?  And who wants to be responsible for designing a new system or system improvement based on uncertain results

 

Other areas of interest in Flow Testing:

Case Studies (Click to view PDF)

 

 

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