Description
NFPA 24, Standard for the Installation of Private Fire Service Mains and Their Appurtenances, 2022 Edition
NFPA 24 2022 edition is the standard for designing and installing the underground piping and private hydrants that feed automatic sprinkler systems, standpipes and other water based fire protection equipment. Site planners, civil engineers and fire protection contractors use it to size and lay out private water supply infrastructure.
This edition is updated to align with NFPA 13 (2022) so underground and aboveground system requirements no longer conflict, and it updates several installation details that installers rely on in the field.
This listing is the 2022 edition. NFPA now lists a 2025 edition of NFPA 24, so check which year your jurisdiction, contract or exam cites before you order.
Aligned with NFPA 13
Requirements are harmonized with NFPA 13 to eliminate conflicts between underground private fire service main design and the aboveground sprinkler piping it feeds.
Valve location and access
The 2022 edition clarifies rules for the location of post indicator valves (PIVs) and other control valves relative to the building, so they stay safely accessible during an emergency.
What is new in the 2022 edition
- Updated guidelines for thrust restraint methods, including grooved joints, to keep underground pipe joints from separating under pressure.
- Refined standards for the placement and visibility of Fire Department Connections (FDCs).
- Updated lists of approved underground piping materials and joining methods.
- Updated specifications for installing backflow preventers to protect municipal water supplies.
Book details
- Title: NFPA 24, Standard for the Installation of Private Fire Service Mains and Their Appurtenances
- Edition: 2022
- ISBN-13: 9781455927852
Questions buyers ask
Who uses NFPA 24?
Site planners, civil engineers and fire protection contractors who design and install underground water supply piping and private hydrants.
What changed in the 2022 edition?
The standard is now aligned with NFPA 13 (2022), and it clarifies control valve location, updates thrust restraint guidance, and refines Fire Department Connection placement rules.
Does NFPA 24 cover backflow preventers?
Yes. It gives updated specifications for installing backflow preventers to protect municipal water supplies.
Why does it align with NFPA 13?
NFPA 24 covers the underground private main and NFPA 13 covers the aboveground sprinkler system it feeds, so the two standards are harmonized to remove conflicting requirements.
What piping materials does it cover?
The 2022 edition updates the lists of approved underground piping materials and joining methods, including guidance for grooved joint thrust restraint.
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