minimum pressure to run a sprinkler system
Is it the minimum operating pressure of Last (most remote) Sprinkler Head OR Is it the minimum operating pressure of the system OR is it the minimum operating pressure of Design Area (2000 sq.ft). What I know is minimum pressure for last sprinkler head must not be less than 7 PSI. If I design my system considering 25psi or 50psi to be the minimum pressure at the last sprinkler head with K-11.2 or K-19.6 sprinklers then the pressure for the system is going too high. Please help.