Attack Hose 4
Attack Hose 4 :
Or: Attack Line. A use classification of a fire fighting hose connected to output of a pump or other pressure source (e. g. , gravity). Firehose used to apply water or other fire fighting agent directly to a fire or burning substance. Typically of 2inches (65mm) diameter or less in the United States. Historically 1. 5inch hose was the primary initial attack line but has been supplanted in most of the US by 1. 75-inch-diameter (44mm) hose that carries 175 gallons per minute. Two-inch hose is available as an option
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