I have a question about the "Historical low" noted on Water Flow Tests from Government agencies (i.e. County, Town, City Water companies). Recently I received a test with the results; Static - 75 psi Residual - 54 psi Flow - 671 gpm.
At the top of the letter they through in, "Historically, the static pressure in this area has been as low as 50 psi." So a 25 psi drop in static pressure. My question is, how do you adjust the residual pressure and flow? Normally I would lower the residual the same pressure drop as the static. With the above example, I would have a residual of 29 psi with a flow of 671 gpm. Should the flow change too?? Has anyone else experienced a similar situation? Thank you in advance for any guidance. Steven Steven MacKinnon Senior Fire Protection Engineer Hartcorn Plumbing & Heating Inc. 850 South 2nd Street Ronkonkoma, NY 11779 631-580-2300 - Office 631-580-1090 - Fax [email protected] _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
