Industrial Grade Sprinkler System is used for regular building and always has water in the inlet and outlet side of the alarm valve and enables prompt fire suppression in case of fire. The System has the feature that in case of fire, the sprinklers is activated by the temperature rise and the water in the outlet side piping is discharged through the sprinkler. The System has the feature of easy installation and prompt fire suppression in case of fire. The System has the feature that as the water is discharged, the pressure balance between the inlet and outlet side of the alarm valve is broken and as the inlet pressure is dropped, the pressure switch attached to the pressure tank is activated to automatically operate the pump, resulting in continuous supply of water. The Industrial Grade Sprinkler System has the feature that as the alarm value is operated, fire warning is given to the protected area through alarm switch control.