TL;DR
A dry-pipe sprinkler system is a fire sprinkler layout whose overhead piping holds pressurized air or nitrogen instead of water, with a dry-pipe valve at the riser keeping water back until a sprinkler head opens and the air bleeds off. It protects unheated spaces — parking garages, attics, loading docks — where water-filled pipe would freeze.
What it means
A dry-pipe sprinkler system is a fire sprinkler layout whose overhead piping holds pressurized air or nitrogen instead of water, with a dry-pipe valve at the riser keeping water back until a sprinkler head opens and the air bleeds off. It protects unheated spaces — parking garages, attics, loading docks — where water-filled pipe would freeze. NFPA 13 limits system size by water-delivery time, and the air compressor and valve trip test add maintenance a wet system doesn't need.
Where it sits in the glossary
Dry-pipe sprinkler system is part of the Certifications group inside the ProFix Directory glossary. Browse every term in this category from the glossary index.
Why Ohio homeowners should know it
This is a term Ohio homeowners encounter when reading contractor quotes, hiring paperwork, or inspection reports. Understanding it well enough to ask one good follow-up question is usually all the protection a homeowner needs.
ProFix Directory keeps definitions short on the index page and saves the longer context — Ohio-specific rules, where the term comes from, and which ProFix tools touch it — for these per-term pages so the term is easy to cite and easy to share.
ProFix tools that touch this term
See also
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