Lub luag haujlwm tseem ceeb ntawm Check Valve valve yog los tiv thaiv qhov rov qab ntawm qhov nruab nrab. Siv lub zog kinetic ntawm cov kua dej nws tus kheej, nws yuav qhib clockwise thiab kaw thaum nws yog counterclockwise. Nws yog feem ntau siv hauv cov twj tso dej, cov twj tso kua mis thiab cov khoom siv uas txwv tsis pub cov kua dej rov qab. Lub valve qia ntawm Stop Valve yog ntsug rau lub rooj zaum valve. Vim lub luv luv stroke ntawm lub valve qia hloov thiab txhim khu kev qha kev txiav txim, lub valve no yog heev haum rau cov khoom uas txiav tawm los yog tswj cov xov xwm.
