The intent of the ITC is to simulate the flow of one sprinkler in order to 
test the alarm activation. The fire pump has nothing to do with it. There is no 
measuring the flow from it. However, if you colleague is going to pitot an ITC, 
call me. I want to watch.   
  
  
  
  
Todd Williams     

  
Fire Protection Design/Consulting
  
Stonington, CT
  
860-608-4559
  
  
  
  
  

  
  
>   
> On Mar 11, 2026 at 5:54 AM,  <Teaster1974 (mailto:[email protected])>  
> wrote:
>   
>   
>   
>
> I have a colleague that says must use fire pump rated pressure to determine 
> flow from inspector’s test connection. I said its a restricted orifice to 
> represent a sprinkler head flowing. Therefore pump pressure is negligible. 
> Who is right?
>
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