A wet-pipe sprinkler system whose piping is filled with an antifreeze solution. When the system is activated, the antifreeze solution is discharged, followed by a discharge of water from the water supply to which it is connected.
A wet-pipe sprinkler system whose piping is filled with an antifreeze solution. When the system is activated, the antifreeze solution is discharged, followed by a discharge of water from the water supply to which it is connected.