| 摘要 |
An accelerator for dry pipe sprinkler systems communicates with a dry pipe valve in such a system above and below the clapper thereof and acts to open a communicating passageway around said clapper upon a loss of air pressure in said dry pipe sprinkler system. The accelerator incorporates a pressure translator mechanism and a valve mechanism, both which prevent contamination from water in the sprinkler system from reaching the actuating parts of the accelerator.
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