[smile]Hi,
Im trying to comply with the 25% drop in residual\static specified in NFPA 219 when carrying out hydrant flow testing. example below
Remote static 158 psi
hydrant 1 open with residual 154psi and flow 2627 lpm
hydrant 2 open with residual 140psi and total flow (x2 hyds)4735 lpm
hydrant...