In {TAIL ~ the embodiment}, a rotational stop cock valve 24 is positioned forward of threaded cap portion 25 in {HEAD ~ nozzle coupling assembly} 21 to selectively permit and restrict flow therethrough 
In { TAIL ~ the embodiment } , a rotational stop cock valve 24 is positioned forward of threaded cap portion 25 in { HEAD ~ nozzle coupling assembly } 21 to selectively permit and restrict flow therethrough
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