「How To Choose Ball Valve Handles Materials」の変更履歴

2023年9月13日 (水)

• 最新前 15:232023年9月13日 (水) 15:23‎ AlbertoPelensky トーク 投稿記録‎ 5,014バイト +5,014‎ ページの作成:「<br>A ball valve is simply a closed valve with a rotary screw bearing on its shaft that controls the movement of a fluid or gas through a needle. The flow of the fluid or gas depends on the rotation of the screw. When the ballast is used, it is a device that holds the screw in a fixed position and acts as a valve for the flow. A ballast is either made of steel or plastic.<br><br><br>There are two types of ball valve handles: threaded and sealed. A threaded ball valv…」