Mumayika valavu yatsopano ya PVC, koma imatuluka nthawi zonse kuchokera mu ulusi. Tsopano muli ndi kutayikira kosalekeza komwe kumawononga ntchito yanu ndikuwononga mbiri yanu ndi kasitomala.

Pewani kutayikira kwa madzi pogwiritsa ntchito tepi ya PTFE yokhala ndi ma wraps 5-8, kumangitsa kangapo kapena kawiri kokha kudutsa zolimba ndi dzanja, ndikuwonetsetsa kuti ulusi ukugwirizana (NPT ndi NPT). Kumangitsa kwambiri valavu kumasweka ndipo ndi cholakwika chofala kwambiri pakuyika.

Nthawi zambiri ndimauza mnzanga Mohommad kuti "zolephera" zambiri za ma valve kwenikweni ndi kulephera kwa kukhazikitsa. Kudontha pang'ono kuchokera ku kulumikizana kolumikizidwa kungakhale kokhumudwitsa kwambiri, koma ndi chizindikiro chodziwikiratu kuti sitepe yofunika kwambiri idasowa panthawi yomanga. Ndawona ma valve abwino kwambiri atayidwa chifukwa cha cholakwika chosavuta chokhazikitsa. Kulumikiza koyenera kuyambira pachiyambi kumapulumutsa nthawi yambiri, ndalama, ndi mavuto ambiri. Tiyeni tiwone momwe tingachitire bwino nthawi zonse.

Kodi mumaletsa bwanji valavu ya mpira kuti isatuluke pa ulusi?

Kudontha kosalekeza kuchokera ku cholumikizira chatsopano kumakhumudwitsa. Mwagwiritsa ntchito chosindikizira, koma kudontha sikutha, zomwe zikuchedwetsa ntchito yanu ndikupangitsa kuti madzi awonongeke.

Letsani kutuluka kwa ulusi poyang'ana momwe mumagwiritsa ntchito sealant. Gwiritsani ntchito tepi ya PTFE yapamwamba kwambiri, muyikulungire ka 5-8 molunjika ku ulusi. Izi zimatsimikizira kuti tepiyo imadzaza bwino mipata popanda kukankhira kunja mukayimangirira.

Apa ndi pomwe kutayikira kwa ulusi kumayambira ndi kutha. Ulusi wochepa pa PVC fitting sunapangidwe kuti upange chisindikizo chokha. Ntchito yawo ndi kupanga mphamvu ya makina. Chisindikizo chenicheni chimapangidwa ndichosindikizira ulusi. Tepi ya PTFE, yomwe imatchedwanso tepi ya Teflon, ndiyo njira yodziwika bwino komanso yothandiza kwambiri. Chofunika kwambiri ndi kugwiritsa ntchito. Choyamba, onetsetsani kuti ulusi wamphongo ndi woyera komanso wouma bwino. Yambani kukulunga ulusi wachiwiri kuchokera kumapeto. Izi ndizofunikira kuti tepi iliyonse isadulidwe ndikukankhidwira mu chitoliro, komwe ingatseke dongosolo. Muyenera kukulunga tepi motsatira wotchi, njira yomweyo yomwe mudzamangitsire cholumikizira. Ngati mukulunga motsatira wotchi, kungolowetsa cholumikiziracho kudzapangitsa tepiyo kusonkhana ndikusweka. Pa zolumikizira zokhazikika kuyambira 1/2″ mpaka 1″, zokulunga zonse 5 mpaka 8 ndizoyenera. Kokani tepiyo mwamphamvu pamene mukukulunga kuti imirire m'zigwa za ulusi. Muyenerabe kuwona mawonekedwe a ulusi kudzera mu tepiyo.

Kodi mungatani kuti mupewe kutayikira kwa valavu musanayike?

Mukufuna kulumikiza valavu, koma ulusiwo umasokonekera pang'ono mukayesa. Kunyalanyaza izi kungayambitse kulumikizana komwe kumadula kapena kutayikira mosasamala kanthu za zomwe mungachite.

Pewani kutayikira kwa madzi potsimikizira kuti ulusi wanu ukugwirizana musanakhudze chotchingira madzi. Anthu ambiri padziko lonse lapansi amagwiritsa ntchito BSPT, pomwe North America imagwiritsa ntchito NPT. Amaoneka ofanana koma sagwirizana konse ndipo nthawi zonse amatayikira madzi.

Uwu ndiye muyezo wofunikira kwambiri, ndipo kuphonya uku kumatsimikizira kulephera. Monga momwe ine ndi Mohommad tafotokozera pamsika wa Bangladesh, nthawi zambiri mumapeza miyezo yonse ya NPT ndi BSPT. Sizosinthika.

• NPT (National Pipe Taper):Ulusi uwu uli ndi ngodya ya madigiri 60.
• BSPT (British Standard Pipe Taper):Ulusi uwu uli ndi ngodya ya madigiri 55.

Kukakamiza NPT yamwamuna kulowa mu valavu ya BSPT yachikazi ndi njira yobweretsera tsoka. Makona osiyanasiyana amachititsa kuti zigwirizane ndi ulusi. Kulumikizanako kungamveke kolimba, koma mukungowononga pulasitiki ndikupanga njira yozungulira yomwe palibe chotseka chomwe chingakonze. Musanayike, gwiritsani cholumikizira chamwamuna kupita ku doko la valavu yachikazi. Yang'anani zizindikiro. Ku Pntek, timalemba bwino mavalavu athu ndi mtundu wa ulusi. Ngati palibe zizindikiro, yesani kuwalumikiza ndi dzanja kwa nthawi imodzi kapena ziwiri. Ngati mukumva kukana kwakukulu kapena kugwedezeka, siyani nthawi yomweyo. Sizikugwirizana kwenikweni. Kuwunika kamodzi kokha kwa masekondi asanu kumaletsa chimodzi mwa zolephera zokhumudwitsa kwambiri komanso zopewera kuyika.

N’chifukwa chiyani kulimbitsa kwambiri ndi njira yoipa kwambiri yochiritsira valavu yotuluka madzi?

Valavu yanu ikudontha, kotero mutenga wrench yayikulu kuti mutembenuzenso. Mukumva ming'alu yakuthwa, ndipo tsopano dontho laling'ono lakhala vuto lalikulu, losakonzedwa.

Kumangika kwambiri ndiye chifukwa chachikulu chomwe chimayambitsa kulephera kwa valavu ya PVC. Kagwiridwe kake ka ulusi wamwamuna wocheperako kamagawanitsa doko la PVC lachikazi. Mphamvu yoyenera imangokhala yolimba ndi dzanja, kenako kutembenuka kamodzi kapena kawiri kokha ndi wrench.

Ndi chibadwa chachibadwa: ngati china chake chikutuluka, chikanikizireni kwambiri.Ma valve a PVC, ichi ndi chinthu cholakwika kwambiri kuchita. Mosiyana ndi chitsulo, PVC ndi thermoplastic yokhala ndi kusinthasintha kochepa. Mukamangirira cholumikizira chocheperako (makamaka chachitsulo) mu doko la PVC lachikazi, mukulowetsa wedge mu pulasitiki. Izi zimapangitsa kuti pakhale kupanikizika kwakukulu kwakunja, komwe kumadziwika kuti hoop stress. Sizitenga mphamvu zambiri kuti zipitirire mphamvu yokoka ya PVC. Izi zimapangitsa kuti ming'alu ya tsitsi ipangike pansi pa ulusi, womwe umafalikira pansi pa kupsinjika kwa dongosolo. Lamulo lomwe timaphunzitsa ndi losavuta komanso lomveka bwino:Kugwirana ndi Dzanja Kuphatikiza Kutembenukira Kumodzi mpaka Kuwiri.Ndi zimenezo basi. Gwiritsani ntchito wrench ya lamba ngati mungathe kuti mupewe kukakamiza thupi la valavu. Chisindikizocho chimapangidwa ndi tepi ya PTFE yomwe imakanikiza m'mipata ya ulusi, osati pophwanya pulasitiki kuti ilowe. Ngati itatuluka pambuyo pomangika bwino, vuto si kulimba. Muyenera kuchotsa kulumikizanako ndikuyang'ana mavuto ena monga ulusi wosagwirizana kapena tepi yosakwanira.

Kodi ndi zinthu zitatu ziti zomwe zimachitika kawirikawiri chifukwa cha kusakhazikika bwino kwa makina?

Mukukumana ndi vuto lina la valavu pamalo ogwirira ntchito. Mumapitiliza kusintha zida, koma mavutowo akupitirirabe, zomwe zimakuwonongerani nthawi, ndalama, komanso zimawononga chidaliro cha kasitomala wanu pantchito yanu.

Zinthu zitatu zomwe zimalephera kwambiri kukhazikitsa ndi izi: ma doko osweka chifukwa chomangika kwambiri; ulusi womwe umatuluka nthawi zonse chifukwa chogwiritsa ntchito ulusi wa NPT/BSPT wosagwirizana; ndi kuwonongeka kwa chisindikizo chamkati chifukwa cha zinyalala zomwe zimalowa mu valavu panthawi yokhazikitsa.

Kumvetsetsa zolephera zitatuzi kumakuthandizani kupanga mndandanda wamaganizo wa kukhazikitsa kulikonse. Pamene valavu yolumikizidwa yalephera, nthawi zambiri imakhala imodzi mwa zifukwa izi.

Kulephera kwachitatu kumeneko nthawi zambiri kumanyalanyazidwa. Ngati valavu ya mpira imakhala yovuta kutembenuza kapena kutuluka madzi ikatsekedwa, mwina chifukwa chakuti chidutswa chaching'ono cha zinyalala chinasambitsidwa mu valavu. Mpira ukatseka pa chinthu cholimbachi, ukhoza kuwononga pamwamba pa mpira wa pulasitiki kwamuyaya kapena kuwononga mipando yofewa ya PTFE. Izi zimapangitsa kuti pakhale njira yotayikira madzi yokhazikika kudzera mu valavu. Nthawi zonse sungani mavalavu anu atsopano m'mabokosi awo mpaka nthawi yowayika, ndipo nthawi zonse tsukani mizere musanawayike. Kusamalira masekondi ochepa kungathandize kupewa mavuto akuluakulu pambuyo pake.

Mapeto

Pewani kutayikira kwa ulusi pogwirizanitsa ulusi, kugwiritsa ntchito chosindikizira bwino, komanso kupewa kumangitsa kwambiri. Kukhazikitsa bwino ndiye chinsinsi chosavuta cha kukhala ndi ulusi wodalirika, wokhalitsa, komanso wopanda kutayikira.Valavu ya mpira wa PVCdongosolo.