Sprinkler Types
Sprinkler Types : The following sprinklers are defined according to design and performance characteristics. Early Suppression Fast-Response (ESFR) Sprinkler: A type of fast-response sprinkler that meets the criteria of 3. 6. 1(a)(1) and is listed for its capability to provide fire suppression of specific high-challenge fire hazards. Extended Coverage Sprinkler: A type of spray sprinkler with maximum coverage areas as specified in Sections 8. 8 and 8. 9 of this standard. Large Drop Sprinkler: A type of specific application control mode sprinkler that is capable of producing characteristic large water droplets and that is listed for its capability to provide fire control of specific high-challenge fire hazards. Old-Style/Conventional Sprinkler: A sprinkler that directs from 40 percent to 60 percent of the total water initially in a downward direction and that is designed to be installed with the deflector either upright or pendent. Open Sprinkler: A sprinkler that does not have actuators or heat-responsive elements. Quick-Response Early Suppression (QRES) Sprinkler: A type of quick-response sprinkler that meets the criteria of 3. 6. 1(a)(1) and is listed for its capability to provide fire suppression of specific fire hazards. Quick-Response Extended Coverage Sprinkler: A type of quick-response sprinkler that meets the criteria of 3. 6. 1(a)(1) and complies with the extended protection areas defined in Chapter 8. Quick-Response (QR) Sprinkler: A type of spray sprinkler that meets the criteria of 3. 6. 1(a)(1) and is listed as a quick-response sprinkler for its intended use. Residential Sprinkler: A type of fast-response sprinkler that meets the criteria of 3. 6. 1(a)(1) that has been specifically investigated for its ability to enhance survivability in the room of fire origin and is listed for use in the protection of dwelling units. Special Sprinkler: A sprinkler that has been tested and listed as prescribed in 8. 4. 9. Specific Application Control Mode Sprinkler (for Storage Use): A type of spray sprinkler listed at a minimum operating pressure with a specific number of operating sprinklers for a given protection scheme. Spray Sprinkler: A type of sprinkler listed for its capability to provide fire control for a wide range of fire hazards. Standard Spray Sprinkler: A spray sprinkler with maximum coverage areas as specified in Sections 8. 6 and 8. 7 of this standard. Concealed Sprinkler: A recessed sprinkler with cover plates. Flush Sprinkler: A sprinkler in which all or part of the body, including the shank thread, is mounted above the lower plane of the ceiling. Pendent Sprinkler: A sprinkler designed to be installed in such a way that the water stream is directed downward against the deflector. Recessed Sprinkler: A sprinkler in which all or part of the body, other than the shank thread, is mounted within a recessed housing. Sidewall Sprinkler: A sprinkler having special deflectors that are designed to discharge most of the water away from the nearby wall in a pattern resembling one-quarter of a sphere, with a small portion of the discharge directed at the wall behind the sprinkler. Upright Sprinkler: A sprinkler designed to be installed in such a way that the water spray is directed upwards against the deflector. Corrosion-Resistant Sprinkler: A sprinkler fabricated with corrosion-resistant material, or with special coatings or platings, to be used in an atmosphere that would normally corrode sprinklers. Dry Sprinkler: A sprinkler secured in an extension nipple that has a seal at the inlet end to prevent water from entering the nipple until the sprinkler operates. Intermediate Level Sprinkler/Rack Storage Sprinkler: A sprinkler equipped with integral shields to protect its operating elements from the discharge of sprinklers installed at higher elevations. Ornamental/Decorative Sprinkler: A sprinkler that has been painted or plated by the manufacturer
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