Correction - half the density, not the mass I think. And I should do some googling I guess- the old annubar stuck down through a hole in the top of the pipe like a flow switch right? Whereas you would have to cut out a section of pipe to install a venturi? On May 10, 2016 5:08 PM, "Brad Casterline" <[email protected]> wrote:
> I thought annubar and venturi were synonymous. Create a constriction in > the flow path and apply Bernoulli's Principle: > ~where the velocity of a fluid is high the pressure is low and, where the > velocity of a fluid is low the pressure is high~ > The change in pressure is half the mass times the velocity squared > (Bernoulli's Equation). > How is it broken? Something clogged up? > On May 10, 2016 3:40 PM, "Karen Lesko" <[email protected]> wrote: > >> We have a mid 1980s fire pump installation with an annubar type flowmeter >> on the line that recirculates to the fire water tank. The flowmeter is >> broken so we have been testing our fire pumps with hydrant flows. We would >> like to be able to do some testing with our recirculation line. Is anybody >> aware of a listed annubar flowmeter or do we need to switch to a venturi >> type? >> >> Karen Lesko >> Fire Protection Engineering >> SRR, LLC >> 803-221-0753 >> >> _______________________________________________ >> Sprinklerforum mailing list >> [email protected] >> >> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org >> >>
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