Muyenera kulamulira kuyenda kwa madzi, koma onani mitundu yambirimbiri ya ma valve. Kusankha yolakwika kungayambitse kutuluka kwa madzi, kutsekeka, kapena kulephera kulamulira bwino makina anu, zomwe zingakupangitseni kuwonongeka kwakukulu.

Pali mitundu yambiri ya ma valve a PVC, koma odziwika kwambiri ndi awa:mavavu a mpirakuti muwongolere kuyatsa/kutseka,ma valve owunikirakuti aletse kubwerera m'mbuyo kwa madzi, ndimavavu a chipatakuti pakhale kudzipatula kosavuta. Mtundu uliwonse umagwira ntchito yosiyana kwambiri mkati mwa dongosolo la madzi.

Kumvetsetsa ntchito yoyambira ya valavu iliyonse ndikofunikira kwambiri. Nthawi zambiri ndimagwiritsa ntchito fanizo losavuta polankhula ndi anzawo monga Budi ku Indonesia. Vavu ya mpira ili ngati switch ya nyali—imayatsidwa kapena kuzimitsidwa mwachangu. Vavu ya chipata ili ngati chotchinga chochedwa komanso chopangidwa mwadala. Ndipo valavu yoyang'anira ili ngati chitseko cholowera mbali imodzi chomwe chimangolola magalimoto kudutsa mbali imodzi. Makasitomala ake—omanga, alimi, okhazikitsa dziwe losambira—amaona kuti izi zimapangitsa kuti zikhale zosavuta kusankha chinthu choyenera. Mukadziwa ntchito yomwe valavuyo iyenera kuchita, chisankhocho chimakhala chomveka bwino.

Kodi ma valve onse a PVC ndi ofanana?

Mukuona ma valve awiri a mpira wa PVC omwe amawoneka ofanana, koma limodzi limadula kawiri kuposa pamenepo. Zimakhala zovuta kugula lotsika mtengo, koma mukuopa kuti lidzalephera ndipo lidzabweretsa tsoka.

Ayi, ma valve onse a PVC si ofanana. Amasiyana kwambiri pa ubwino wa zinthu, zipangizo zomangira, kapangidwe kake, ndi kulondola kwa kupanga. Kusiyana kumeneku kumakhudza mwachindunji nthawi yomwe valavu imatha komanso momwe imagwirira ntchito bwino ikapanikizika.

Kusiyana pakati pa valavu yabwino ndi yoipa kuli m'zinthu zomwe simungathe kuziona nthawi zonse. Choyamba ndiZinthu za PVCyokha. Ife ku Pntek timagwiritsa ntchito 100% virgin PVC, yomwe ndi yolimba, yolimba, komanso yowala kwambiri. Ma valve otsika mtengo nthawi zambiri amagwiritsa ntchito PVC yobwezerezedwanso yosakanikirana ndi zodzaza mongakashiamu kabonetiIzi zimapangitsa kuti valavu ikhale yolemera, komanso yofewa kwambiri komanso yosavuta kusweka. Zotsatira zake ndi izi:zisindikizoMphete zoyera zomwe zili mkati mwake zimatseka mpira zimatchedwa mipando. Ma valve abwino amagwiritsa ntchito zoyeraPTFE (Teflon)kuti ikhale yosalala, yopapatiza pang'ono, komanso yokhalitsa. Yotsika mtengo imagwiritsa ntchito mapulasitiki otsika mtengo omwe amatha msanga. Ma O-rings akuda pa tsinde ayenera kukhala EPDM, yomwe ndi yabwino kwambiri polimbana ndi madzi ndi UV, osati rabara yotsika mtengo ya NBR. Pomaliza, imadalirakulondolaKupanga kwathu kodzipangira kumatsimikizira kuti valavu iliyonse imazungulira bwino. Mavalavu opangidwa molakwika amatha kukhala olimba komanso ovuta kuwatembenuza, kapena omasuka kwambiri moti amamva ngati osadalirika.

Ndi valavu iti yabwino, PVC kapena valavu yachitsulo?

Chitsulo chimamveka cholemera komanso champhamvu, pomwe PVC imamveka yopepuka. Mwachibadwa, chitsulo nthawi zonse chimakhala chisankho chabwino, koma lingaliro limenelo lingayambitse dongosolo lomwe silingawonongeke.

Palibe chabwino kuposa ichi; amapangidwa kuti agwire ntchito zosiyanasiyana. PVC ndi yabwino kwambiri pamadzi ozizira komanso malo owononga kumene chitsulo chingagwire dzimbiri. Chitsulo ndi chofunikira pa kutentha kwambiri, kupanikizika kwambiri, ndi mankhwala ena.

Kusankha pakati pa PVC ndi chitsulo sikutanthauza mphamvu, koma chemistry. Ubwino waukulu wa PVC ndi wakuti ndiosakhudzidwa ndi dzimbiri ndi dzimbiri. Budi ali ndi kasitomala mumakampani opanga zaulimi wa m'madzi yemwe ankakonda kusintha ma valve ake amkuwa chaka chilichonse chifukwa madzi amchere adawapangitsa kuti agwire ntchito. Kuyambira pomwe adasinthira ma valve athu a PVC, sanakumane ndi mavuto kwa zaka zisanu. Amagwira ntchito bwino monga tsiku loyamba. Apa ndi pomwe PVC ndiye wopambana: kuthirira ndi feteleza, maiwe osambira, mizere yamadzi amchere, ndi mapaipi wamba. Komabe, PVC ili ndi malire ake. Singagwiritsidwe ntchito pamadzi otentha, chifukwa imafewa ndikulephera. Ilinso ndi mphamvu zochepa kuposa chitsulo. Valavu yachitsulo (monga chitsulo kapena mkuwa) ndiyo yokhayo yomwe ingasankhidwe pamizere ya nthunzi, makina amadzi otentha, kapena mafakitale opanikizika kwambiri. Chofunika kwambiri ndikufananiza zida za vavu ndi madzi omwe akuyenda mkati mwake.

PVC vs. Chitsulo: Ndi iti yomwe mungasankhe?

Kodi n’chiyani chimapanga valavu ya PVC ‘yabwino’?

Mukugula zinthu pa intaneti ndipo mukupeza valavu ya PVC pamtengo wotsika kwambiri. Mukudzifunsa ngati ndi kugula mwanzeru kapena ngati mukugula vuto lina mtsogolo lomwe lidzatuluke nthawi ya 2 koloko m'mawa.

Valavu ya PVC "yabwino" imapangidwa kuchokera ku PVC yoyera 100%, imagwiritsa ntchito mipando ya PTFE yapamwamba komanso mphete za EPDM, imazungulira bwino, ndipo yayesedwa ku fakitale kuti itsimikizire kuti siitulutsa madzi.

Pali zinthu zingapo zomwe ndikuuza gulu la Budi kuti liziyang'ana. Choyamba, yang'ananithupiIyenera kukhala yosalala, yonyezimira pang'ono. Maonekedwe osawoneka bwino komanso osalala nthawi zambiri amasonyeza kugwiritsa ntchito zodzaza, zomwe zimapangitsa kuti ikhale yopyapyala. Chachiwiri,gwiritsani ntchito chogwiriraIyenera kutembenuka bwino komanso mosalekeza kuyambira yotseguka mpaka yotsekedwa bwino. Ngati ndi yolimba kwambiri, yogwedezeka, kapena ikumva ngati yakuda, kapangidwe ka mkati sikokwanira. Izi zimapangitsa kuti pakhale kutuluka madzi ndi chogwirira chomwe chingadumphe. Chachitatu, yang'ananizizindikiro zomveka bwino. Valavu yabwino idzalembedwa bwino ndi kukula kwake, kupanikizika kwake (monga PN10 kapena PN16), ndi mtundu wa chinthucho (PVC-U). Opanga odziwika bwino amanyadira ndi zinthu zawo. Pomaliza, zimatengera kudalira. Ku Pntek, vavu iliyonse yomwe timapanga imayesedwa kupanikizika isanatuluke mufakitale. Izi zimatsimikizira kuti sidzatuluka. Ndicho chinthu chosawoneka chomwe mumalipira: mtendere wamumtima womwe udzagwira ntchito basi.

Kodi valavu yatsopano ya PVC imasintha zinthu?

Muli ndi valavu yakale yomwe ndi yolimba kuti mutembenuze kapena imadontha pang'onopang'ono. Zikuoneka ngati vuto laling'ono, koma kunyalanyaza kungapangitse kuti dongosolo lanu likhale pachiwopsezo cha mavuto akuluakulu.

Inde, valavu yatsopano ya PVC imapanga kusiyana kwakukulu. Imawongolera chitetezo nthawi yomweyo mwa kusintha zinthu zosweka, imatsimikizira kuti pali chisindikizo chabwino kwambiri kuti isatuluke, komanso imapereka ntchito yosalala komanso yodalirika mukayifuna kwambiri.

Kusintha valavu yakale sikongokonza kokha; ndi kusintha kwakukulu m'magawo atatu ofunikira. Choyamba ndichitetezoValavu ya PVC yomwe yakhala padzuwa kwa zaka zambiri imakhala yolimba. Chogwiriracho chingasweke, kapena choipa kwambiri, thupi likhoza kusweka chifukwa cha kugunda pang'ono, zomwe zimapangitsa kuti madzi asefukire kwambiri. Valavu yatsopano imabwezeretsa mphamvu yoyambirira ya chinthucho. Chachiwiri ndikudalirikaKudontha pang'onopang'ono kuchokera ku valavu yakale sikungokhala madzi otayika; kumasonyeza kuti zotsekera zamkati zalephera. Vavu yatsopano yokhala ndi mipando yatsopano ya PTFE ndi mphete za EPDM O imapereka kutseka kwabwino kwambiri komanso kolimba komwe mungadalire. Chachitatu ndikugwira ntchitoPakagwa ngozi, muyenera kutseka madzi mwachangu. Vavu yakale yomwe ndi yolimba chifukwa cha ukalamba kapena sikelo yake siigwira ntchito kwenikweni. Vavu yatsopano imazungulira bwino, zomwe zimakupatsani ulamuliro mwachangu. Pamtengo wotsika wavalavu, mumabwezeretsa chitetezo, kudalirika, ndi ntchito ya malo ofunikira owongolera mu dongosolo lanu.

Mapeto

ZosiyanaMa valve a PVCkuchita ntchito zinazake. Ubwino wake umatanthauzidwa ndi zipangizo zoyera komanso kupanga zinthu molondola, zomwe zimapangitsa kuti zinthu zikhale ndi moyo wautali komanso wodalirika kuposa njira ina yotsika mtengo.