| 摘要 |
The invention concerns a sprinkler system divided into fire zones and operating at a constant working pressure, and the object of the invention is to obtain automatic indication of sprinkler activation in each respective fire zone. For each fire zone there is a monitoring valve 1 with inbuilt return valve 6, 7, 8 which, upon sprinkler activation, slides into a cylinder chamber 10 provided with pressure monitor 11. <IMAGE>
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