Valve Sealing Requirements

Lub sealing kev ua tau zoo ntawm lub valve yog hais txog lub peev xwm ntawm txhua qhov kev sib khi ntawm lub valve kom tiv thaiv qhov nruab nrab to. Nws yog qhov tseem ceeb tshaj plaws kev ua tau zoo ntawm lub valve. Muaj peb qhov kev sib khi ntawm lub valve: kev sib cuag ntawm qhov qhib thiab kaw qhov chaw thiab ob qhov chaw sib khi ntawm lub rooj zaum valve; qhov haum ntawm lub ntim, lub valve qia thiab lub thawv ntim khoom; thiab kev sib txuas ntawm lub cev valve thiab lub valve npog. Thawj qhov xau yog hu ua Internal to, uas feem ntau hu ua lax sealing. Nws yuav cuam tshuam rau lub valve lub peev xwm txiav tawm qhov nruab nrab. Rau kev txiav tawm li qub, tsis tso cai rau sab hauv. Ob qho kev xau tom kawg yog hu ua sab nraud to, uas yog, qhov nruab nrab xau los ntawm sab hauv lub valve mus rau sab nraud lub valve. Cov dej xau yuav ua rau cov khoom poob, ua paug rau ib puag ncig, thiab tseem ua rau muaj xwm txheej hnyav. Rau flammable, explosive, lom los yog radioactive xov xwm, tsis tso cai, yog li lub valve yuav tsum muaj kev ruaj ntseg sealing kev ua tau zoo.