| 摘要 |
<p>A fire suppression valve (10) for use with a cannister (11) of fire suppression material. The valve (10) has a housing (20) with a central connection (22) for attachment to the cannister (11) and communicating with a central chamber (21). The central chamber (21) has a relatively smaller outlet port (16) on one side and diametrically opposite thereto a concentric and relatively larger piston port (18). A two-stage piston (24) operates inside the central chamber (21) to control access to the outlet port (18). In the closed position, the pressure of the fire suppression material serves to bias the two-stage piston (24) toward the open position. The two-stage piston (24) is oriented along an axis that is angled with respect to the orientation of the central connection (22), to thereby minimize the amount of vertical space required by the valve (10) maximize cannister (11) size for a given space limitation. The outlet port (16) and piston port (18) are preferably formed by a gun reaming process which produces highly finished and concentric sealing surfaces which more reliably engage the piston end and actuating piston.</p> |
