AnsweredAssumed Answered

Pressure drop in fire hydrant line?

Question asked by rahul.sukumar123 on Apr 13, 2020
Latest reply on Apr 16, 2020 by bradley.johnson

In my workplace we are maintaining a pressure of 7 kg/cm2 at pump room.Jockey switch on at 6.5 kg/cm2.Recently pressure in hydrant started to drop 1 kg/cm2 in 15 mins.Inspected fire hyrant points there is no leakage visible.What would be the reason for this.Is this due to trapped air inside hyrant line?.

In  normal case what is the frequency of start for jockey pump in auto mode?