Note that a sprinkler system can be of more than one type. For example, a wet pipe system can be configured as an antifreeze or circulating closed-loop system. Conclusion The NFPA 13 standard is demanding in its requirements, but this is necessary considering the important role of automatic s...
2.Dry Pipe Sprinkler System(干式系统). A sprinkler system employing automatic sprinklers that are attached to apiping system containing air or nitrogen under pressure, the release of which (as from the opening of a sprinkler) permits the water pressure to open a valve known as a dry pipe ...
Dry System. A system employing automatic sprinklers attached to a piping system containing air under atmospheric or higher pressures. Loss of pressure from the opening of a sprinkler or detection of a fire condition causes 44、 the release of water into the piping system and out the opened ...
After gaining practical experience using the 1980 edition, modifications to the standard, including removal of design parameters for dry pipe systems, were made in the 1984 edition. The 1989 and 1991 editions established criteria for the use of antifreeze systems as well as some of the ...
including removalofdesignparametersfordrypipesystems,weremadeinthe1984edition. The1989and1991editionsestablishedcriteriafortheuseofantifreezesystemsaswellassomeofthei nstallationcriteriaassociatedwithspeciallylistedpipingmaterials. The1994editionprovidedexpandedinformationonnonmetallicpipeandintroducedanewdesignoption that...
® NFPA 13 Standard for the Installation of Sprinkler Systems 2019 ® IMPORTANT NOTICES AND DISCLAIMERS CONCERNING NFPA STANDARDS NOTICE AND DISCLAIMER OF LIABILITY CONCERNING THE USE OF NFPA STANDARDS ® NFPA codes, standards, recommended practices, and guides (“NFPA Standards”), of which the...
The application of heat to any sprinkler will cause that single sprinkler to operate, permitting water to discharge over its area of protection. 2. A dry pipe system is similar to a wet system, except that water is held back from the piping network by a special dry pipe valve. The valve...
CityFireDepartmentconductedthedwelling tests.FactoryMutualResearchCorporation,McNearyInsuranceConsultingServices,andtheCharlotte, NorthCarolina,FireDepartmentconductedthemobilehometests. Aftergainingpracticalexperienceusingthe1980edition,modificationstothestandard,includingremoval ofdesignparametersfordrypipesystems,weremadein...
The application ofheat to any sprinkler will cause that single sprinkler tooperate, permitting water to discharge over its area ofprotection.2. A dry pipe system is similar to a wet system, except thatwater is held back from the piping network by a spe-cial dry pipe valve. The valve is ...
54 NFPA 274-2023 2023-01-01 English Standard Test Method to Evaluate Fire Performance Characteristics of Pipe Insulation - Effective Date: 12/19/2022 55 NFPA 262-2023 2023-01-01 English Standard Method of Test for Flame Travel and Smoke of Wires and Cables for Use in Air-Handling Spaces -...