バルブの機能？
Thread Content
銘板には方向切替弁と書かれており、工学的には調節弁に流量計を組み合わせて水道水を導入するものです。この方向切りバルブの役割は何で、調節バルブとして機能するのか？；水道水を使うには特に条件はない。解く！
組み立て式のバルブで、ヘッドとシャンクが純正品じゃないんですか？
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