| 摘要 |
<p>The sprinkler (10) has a follow body (11) normally sealed at its outer end by a valve (13) which is retained in position by a valve-retaining assembly (26). The valve-retaining assembly has locking balls (36) which are held in engagement with a groove (21) in the sprinkler body by a bevelled locking disc (31) with a push rod (33) engaging a eutectic material (37) in a tubular temperature-sensing element (38).</p> |
