1. Lub bolts welded ntawm lub valve disc yuav tsum tsis txhob ntev dhau. Txwv tsis pub, cov bolts yuav ntev dhau lawm thiab yuav tiv thaiv qhov ntws ntawm lub cev valve, ua rau lub sealing nto yog" overheaded" thiab tsis tuaj yeem ua lub luag haujlwm sib khi; xyuam xim rau kev kuaj xyuas thiab kho qhov qhib ntawm cov ntsia hlau pas nrig thaum sib dhos. Xyuas kom meej tias qhov sealing nto tuaj yeem ua kom nruj.
2. Xaiv cov ntaub ntawv kho kom haum. Lub thickness ntawm lub ncoo yuav tsum yog me ntsis qis dua los yog sib npaug ntawm cov kauj ruam qhov siab ntawm lub valve disc sealing nto, kom cov mos gasket thiab valve disc sealing nto yog nyob ze thiab nyob rau hauv tib lub dav hlau.
3. Txhawm rau tiv thaiv cov txiv ntoo compression los ntawm kev poob, kev kho kom zoo los tiv thaiv xoob yuav tsum tau ua tom qab cov txiv ntoo tau nruj.
4. Kev siv cov txheej txheem ntawm cov kua nruab nrab yuav tsum tau txiav txim siab, thiab cov khoom muag muag uas haum rau cov kev xav tau ntawm qhov nruab nrab yuav tsum raug xaiv kom tsis txhob muaj kev cuam tshuam ntawm nruab nrab corrosion lossis kub deformation.
5. Thaum lub sealing nto ntawm lub rooj zaum valve raug puas tsuaj loj, lub rooj zaum valve tuaj yeem raug muab pov tseg, thiab cov tub ntxhais valve tseem tuaj yeem siv nrog lub rooj zaum valve ntawm tib lub ntsiab lus tom qab kev txhim kho.
6. Ua ib lub cim thaum kho lub valve kom tsis txhob muaj kev kub ntxhov qhib thiab kaw, thiaj li tsis cuam tshuam rau lub neej kev pab cuam ntawm lub gasket.
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