最終更新日：2024/08/03
A non-return valve allowing atmospheric air into a boiler, if a cold boiler reduces its internal pressure on cooling down.
正解を見る
vacuum valve
編集履歴（0）
A non-return valve allowing atmospheric air into a boiler, if a cold boiler reduces its internal pressure on cooling down.
vacuum valve
DiQt（ディクト）
無料
★★★★★★★★★★
