Quarterly Sprinkler System Inspection 2 - Wet Risers 3- water gauges Deficiency: Both systems are due for a 5 year internal inspection and gauge replacement System is due for 5 year FDC test 2" Main drain valve continues to have a leak ( Flushed multiple times to and still leaks ) 2-5year internal inspection 1 FDC hydro test 2" main drain valve 1- 2" Union 1- 4" nipple (2") if needed 1-6" nipple 5' 2" pipe if needed Need threader