Dry pipe sprinkler systems are systems in which the upper part of the dry alarm valve is constantly pressurized with compressed air or inert gas and the lower part of the dry alarm valve is pressurized with water. Dry pipe systems should only be used in areas where there is a risk of freezing damage and in areas similar to drying ovens where the temperature is above 70°C.
Note: It is not recommended to use dry pipe systems in high-hazard applications. The delay in water reaching the first opened sprinkler can seriously reduce the system's efficiency.
In dry pipe systems, a grid piping system should not be used.
