| 摘要 |
A large orifice ESFR sprinkler arrangement (10) has a sprinkler body (12) with a frame (22) supporting a deflector (40). The sprinkler body (12) has an orifice (18) providing a K factor of at least 16, preferably 22. A thermally responsive assembly (52) retains a sealing structure (5) in the orifice (18). A guard ring (74) projects from a strut member (60) in the thermally responsive assembly (52) to protect the glass bulb (70).
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