PROBLEM TO BE SOLVED: To eliminate a problem of breakage due to freezing and temporary use regulation by preventing the generation of freeze of remaining spray liquid in a spray beam of a sprayer.SOLUTION: A water releasing valve 5 is arranged in a spray beam of a sprayer having a water stop cock 4 opening and closing a pipe channel 2b in a root part of a spray pipe 2 and a spray nozzle in at least the distal end of the spray pipe 2 respectively, there by remaining spray liquid in the spray pipe 2 can be discharged via the water releasing valve 5 when the water stop cock 4 is closed. Although the water stop cock 4 and the water releasing valve 5 are constituted of a three-way valve 11 and are compounded, they are arranged as independent valves.【課題】噴霧機の散布竿を、残存噴霧液の凍結が生じないものにして凍結による破損や一時的な使用規制の問題をなくすることを課題としている。【解決手段】噴管2の根元部に管路2bを開閉する止水コック4を、噴管2の少なくとも先端に噴霧ノズルをそれぞれ有する噴霧機の散布竿に対して水抜き弁5を設け、止水コック4の閉弁時に噴管2内の残存噴霧液を水抜き弁5経由で排出可能にした。止水コック4と水抜き弁5は3方弁11で構成してその両者を複合化しているが、独立した弁として設けてもよい。【選択図】図6
