NFPA 13 defines several distinct system configurations, each designed for specific environmental or functional needs.
NFPA 13 is designed to provide a "reasonable level of protection" by standardizing design, installation, and testing requirements. nfpa 13
These are hybrids often used in high-value areas like data centers or museums. The pipes are dry, but water is held back by a pre-action valve. This valve is activated by a separate detection system (like smoke detectors). NFPA 13 defines several distinct system configurations, each