FIELD: fire protection. SUBSTANCE: device has body provided with drenching feeding and stimulating chambers, a lock valve and an overflow one. The feeding chamber is attached to the stimulating one. The overflow valve serves for connecting the stimulating chamber with atmosphere. The lock valve is in the form of a flexible membrane having a calibrated through hole provided in it which in cross-section area ranks below the taken together orifices of the overflow valve. EFFECT: high-speed delivery, less people engaged.
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|---|---|---|---|
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RU2754439C1 |
