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UL 33 PDF
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Standard for Heat Responsive Links for Fire-Protection Service
| Published by | Publication Date | Number of Pages |
| UL | 03/09/2010 | 32 |
UL 33 – Standard for Heat Responsive Links for Fire-Protection Service
Please note:All interim revisions for this edition available at time of your purchase will be included.
Heat Responsive Links for Fire-Protection Service
UL 33
1 Scope
1.1 These requirements cover heat responsive links used for fire-protection service. These links consist of devices intended for installation under load conditions such as for use with automatic fire suppression systems; or automatic closure devices for doors, windows, dampers or smoke relief vents.
1.2 Heat responsive links are categorized by temperature rating, type of coating or plating, minimum and maximum design load, and other factors which may have a bearing on their intended use.
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