Happy Friday everyone:

Once I’ve taken a flow test, I know the formula for adjusting the flow at a 
particular  residual pressure; it’s published in NFPA 291.   But I’ve lost my 
notes on the corollary formula for calculating the residual pressure at a 
particular flow – does anyone have that handy?   I made cheat sheets years ago 
but they’ve decomposed and become grains in the sands of time…

Steve L.
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