Muyenera kugula ma valve a PVC pa ntchito, koma kabukhu kake n'kovuta kwambiri. Mpira, cheke, gulugufe, diaphragm—kusankha yolakwika kumatanthauza dongosolo lomwe limatuluka, kulephera, kapena silikugwira ntchito bwino.

Mitundu ikuluikulu ya mavavu a PVC imagawidwa m'magulu malinga ndi ntchito zawo: mavavu a mpira owongolera kuyatsa/kutseka, mavavu owunikira kuti asabwerere m'mbuyo, mavavu a gulugufe oletsa kutsekereza mapaipi akuluakulu, ndi mavavu a diaphragm ogwiritsira ntchito madzi owononga kapena a ukhondo.

Funso limene ndimakambirana nthawi zambiri ndi anzanga, kuphatikizapo Budi, yemwe ndi manejala wamkulu wogula zinthu ku Indonesia. Makasitomala ake, kuyambira makontrakitala mpaka ogulitsa, ayenera kudziwa kuti akupeza chida choyenera pantchitoyo.makina opopera madziimakhala yolimba ngati gawo lake lofooka kwambiri, ndikusankha yoyeneramtundu wa valavuNdi sitepe yoyamba yopangira dongosolo lodalirika komanso lokhalitsa. Kumvetsetsa kusiyana kumeneku si kungodziwa zaukadaulo kokha; ndi maziko a polojekiti yopambana.

Kodi pali mitundu yosiyanasiyana ya ma valve a PCV?

Mukamva mawu akuti “valavu ya PVC” ndipo mungaganize kuti ndi chinthu chimodzi, chokhazikika. Lingaliro ili lingakupangitseni kukhazikitsa valavu yomwe singathe kuthana ndi kupanikizika kapena kuchita ntchito yomwe mukufuna.

Inde, pali mitundu yambiri ya ma valve a PVC, iliyonse ili ndi njira yapadera yamkati yopangidwira ntchito inayake. Yodziwika kwambiri ndi yoyambira/kuimitsa kuyenda kwa madzi (ma valve a mpira) komanso yoletsa kuyenda kwa madzi mobwerera m'mbuyo (ma valve owunikira).

Kuganiza kuti ma valve onse a PVC ndi ofanana ndi cholakwika chofala. Zoona zake n'zakuti, gawo la "PVC" limangofotokoza zinthu zomwe valavu imapangidwa nazo—pulasitiki yolimba komanso yosapsa ndi dzimbiri. Gawo la "valavu" limafotokoza ntchito yake. Kuti tithandize Budi ndi gulu lake kutsogolera makasitomala awo, timawagawa m'magulu malinga ndi ntchito yawo yaikulu. Kugawa kumeneku kumathandiza aliyense kusankha chinthu choyenera molimba mtima.

Nayi njira yodziwira mitundu yodziwika bwino yomwe mungakumane nayo pakuwongolera madzi:

Kodi mitundu inayi ya PVC ndi iti?

Mumawona zilembo zosiyanasiyana monga PVC-U ndi C-PVC ndipo mumadabwa ngati zili zofunika. Kugwiritsa ntchito valavu yokhazikika mu mzere wa madzi otentha chifukwa simunadziwe kusiyana kwake kungayambitse kulephera kwakukulu.

Funso ili ndi lokhudza zinthu zapulasitiki, osati mtundu wa valavu. Zipangizo zinayi zodziwika bwino za PVC-family ndi PVC-U (yokhazikika, yamadzi ozizira), C-PVC (yamadzi otentha), PVC-O (yamphamvu kwambiri), ndi M-PVC (yosinthidwa).

Funso ili ndi labwino kwambiri chifukwa limafotokoza bwino za ubwino wa zinthu ndi chitetezo cha ntchito. Kusokoneza mitundu ya ma valavu ndi mitundu ya zinthu n'kosavuta. Ku Pntek, timakhulupirira kuti mnzanu wodziwa bwino ntchito ndi mnzanu wopambana, kotero kufotokoza izi ndikofunikira kwambiri. Zinthu zomwe valavu yanu imapangidwa nazo zimatengera malire a kutentha kwake, kuchuluka kwa kupanikizika, komanso kukana mankhwala.

PVC-U (Polyvinyl Chloride Yopanda Pulasitiki)

Uwu ndi mtundu wofala kwambiri wa PVC womwe umagwiritsidwa ntchito popangira mapaipi, zolumikizira, ndi ma valve ku North America, Europe, ndi Asia. Ndi wolimba, wotsika mtengo, komanso wosagwirizana ndi mankhwala osiyanasiyana. Ndiwo muyezo wogwiritsira ntchito madzi ozizira. Ma valve athu ambiri a mpira wa Pntek ndi ma valve owunikira omwe Budi amalamula amapangidwa kuchokera ku PVC-U yapamwamba kwambiri.

C-PVC (Chlorinated Polyvinyl Chloride)

C-PVC imadutsa mu njira yowonjezera ya chlorination. Kusintha kosavuta kumeneku kumawonjezera kwambiri kukana kwake kutentha. Ngakhale PVC-U iyenera kugwiritsidwa ntchito mpaka 60°C (140°F), C-PVC imatha kupirira kutentha mpaka 93°C (200°F). Muyenera kugwiritsa ntchito ma valve a C-PVC pamizere yamadzi otentha.

Mitundu Ina

PVC-O (Yokhazikika) ndi M-PVC (Yosinthidwa) sizipezeka kawirikawiri pama valve koma zimapezekanso kwambiri pamapaipi apadera opanikizika, koma ndibwino kudziwa kuti alipo. Amapangidwa kuti azitha kupanikizika kwambiri komanso kulimba bwino.

Kodi mitundu ikuluikulu isanu ndi umodzi ya ma valve ndi iti?

Mukumanga dongosolo lovuta ndipo mukufunikira zambiri osati kungotsegula/kutseka valavu yosavuta. Kuwona mayina monga “Globe” kapena “Gate” kungakhale kosokoneza ngati mumagwira ntchito kwambiri ndi mavavu a mpira wa PVC.

Magulu asanu ndi limodzi akuluakulu a ma valve ndi Ball, Gate, Globe, Check, Butterfly, ndi Diaphragm valves. Ambiri amapezeka mu PVC kuti agwiritsidwe ntchito ngati ma valve achitsulo angawonongeke kapena kukhala okwera mtengo kwambiri.

Ngakhale tikuyang'ana kwambiri mitundu yodziwika bwino ya PVC, kumvetsetsa banja lonse la ma valve kumakuthandizani kudziwa chifukwa chake ma valve ena amasankhidwa kuposa ena. Ena ndi miyezo yamakampani, pomwe ena ndi a ntchito zinazake. Chidziwitso chachikuluchi chimathandiza gulu la Budi kuyankha ngakhale mafunso a makasitomala atsatanetsatane kwambiri.

Pa kasamalidwe ka madzi konse,mavavu a mpira, ma valve owunikirandimavavu a gulugufeMitundu ya PVC yofunika kwambiri yodziwika.

Kodi mitundu yosiyanasiyana ya ma valve oyesera a PVC ndi iti?

Mukufuna valavu yoyezera kuti mupewe kubwerera m'mbuyo, koma muwona njira monga "swing," "ball," ndi "spring." Kuyika yolakwika kungayambitse kulephera, nyundo yamadzi, kapena valavuyo isagwire ntchito konse.

Mitundu ikuluikulu ya ma valve oyesera a PVC ndi swing check, ball check, ndi spring check. Iliyonse imagwiritsa ntchito njira yosiyana yoletsa kuyenda kwa madzi kumbuyo ndipo imagwirizana ndi njira zosiyanasiyana zoyendetsera mapaipi ndi momwe madzi amayendera.

Valavu yoyang'anira ndi choteteza chete cha makina anu, chomwe chimagwira ntchito yokha popanda zogwirira kapena mphamvu zakunja. Koma si zoteteza zonse zomwe zimagwira ntchito mofanana. Kusankha yoyenera ndikofunikira kwambiri kuti pampu itetezeke komanso kuti makinawo akhale olimba. Iyi ndi mfundo yomwe ndimayigogomezera nthawi zonse ndi Budi, chifukwa imakhudza mwachindunji kudalirika kwa nthawi yayitali kwa makina a makasitomala ake.

Valavu Yoyang'anira Kutembenuka kwa PVC

Uwu ndi mtundu wosavuta kwambiri. Uli ndi chotchinga chotchinga (kapena diski) chomwe chimatseguka ndi madzi. Madzi akasiya kuyenda kapena kubwerera m'mbuyo, mphamvu yokoka ndi mphamvu yakumbuyo zimagwedeza chotchingacho mozungulira mpando wake. Zimagwira ntchito bwino kwambiri m'mapaipi opingasa kapena m'mapaipi oyima omwe madzi amatuluka mmwamba.

Vavu Yowunikira Mpira wa PVC

Iyi ndi ntchito yathu yapadera ku Pntek. Mpira wozungulira umakhala m'chipinda. Kuyenda kwa mpira kutsogolo kumakankhira mpirawo kunja kwa njira yoyenda. Kuyenda kwa mpira kukabwerera m'mbuyo, kumakankhira mpirawo m'mpando, zomwe zimapangitsa kuti ukhale wolimba. Ndi wodalirika kwambiri, ukhoza kuyikidwa molunjika kapena mopingasa, ndipo ulibe ma hinges kapena ma springs oti uwonongeke.

Vavu Yofufuzira ya PVC Spring

Mtundu uwu umagwiritsa ntchito kasupe kuti uthandize kutseka valavu mwachangu pamene madzi asiya kutuluka. Kutseka mwachangu kumeneku ndi kwabwino kwambiri popewa nyundo yamadzi—mafunde owononga omwe amapangidwa ndi kuyimitsa mwadzidzidzi madzi. Akhoza kuyikidwa munjira iliyonse.

Mapeto

Kusankha valavu yoyenera ya PVC kumatanthauza kumvetsetsa mtundu wake—mpira wowongolera, kuyang'ana momwe zinthu zilili—ndi zinthu zapulasitiki zokha. Chidziwitsochi chimatsimikizira kudalirika kwa makina, chimaletsa kulephera, komanso chimalimbitsa chidaliro cha makasitomala.