Steve, It should be: [cid:[email protected]]
Where: Px= The residual pressure at a particular flow (Qx) Ps= The static pressure during the flow test Pr= The residual pressure during the flow test correlating with Qr Qx= The flow amount correlating with residual pressure being solved for (Px) Qr= The flow measured during the test correlating with Pr Though please run the calc through a known water supply calc just to make sure its correct before you use it on an un-known. Hope this helps! Thanks, Eric Rieve, SET Rieve Fire Protection From: Steve Leyton <[email protected]> Sent: Friday, November 10, 2023 1:26 PM To: Discussion list on issues relating to automatic fire sprinklers <[email protected]> Subject: [Sprinklerforum] Flow test adjustment formula 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.
_________________________________________________________ SprinklerForum mailing list: https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org To unsubscribe send an email to [email protected]
