Preaction Sprinkler System Calculator
Calculate preaction system requirements for data centers, museums, freezers, and water-sensitive environments per NFPA 13.
Preaction System Types
| Type | Valve Opens When | Best For |
|---|---|---|
| Single Interlock | Detection activates | Freezers, museums |
| Double Interlock | Detection AND sprinkler | Data centers, telecom |
| Non-Interlock | Detection OR sprinkler | Moderate sensitivity |
Preaction System Advantages
Water Damage Prevention
Dry piping prevents accidental water discharge from mechanical damage or corrosion leaks. Critical for data centers and archives.
Early Warning
Detection system provides alert before water flows, allowing investigation and manual intervention if it's a false alarm.
Freeze Protection
Dry piping can be used in unheated spaces without antifreeze. Common in freezers and loading docks.