Muyenera kugula mavavu a PVC kuti mugwire ntchito, koma mndandandawo ndi wochuluka. Mpira, cheke, butterfly, diaphragm—kusankha yolakwika kumatanthauza dongosolo limene limatuluka, lolephera, kapena losagwira bwino ntchito.

Mitundu ikuluikulu ya ma valve a PVC amagawidwa ndi ntchito yawo: ma valve a mpira oyendetsa / kutseka, fufuzani ma valve kuti muteteze kubwerera, ma valve a butterfly for throttling mapaipi akuluakulu, ndi ma valve a diaphragm ogwiritsira ntchito madzi owononga kapena aukhondo.

Ili ndi funso lomwe ndimakambirana pafupipafupi ndi anzanga, kuphatikiza Budi, woyang'anira zogula wamkulu ku Indonesia. Makasitomala ake, kuyambira kontrakitala mpaka ogulitsa, ayenera kudziwa kuti akupeza chida choyenera pantchitoyo. Adongosolo la mapaipiimangokhala yamphamvu monga gawo lake lofooka kwambiri, ndikusankha zolondolamtundu wa valvendi sitepe yoyamba yomanga dongosolo lodalirika, lokhalitsa. Kumvetsetsa kusiyana kumeneku sikungodziwa luso; ndiye maziko a ntchito yopambana.

Kodi pali mitundu yosiyanasiyana ya mavavu a PCV?

Mumamva mawu oti "vavu ya PVC" ndipo mutha kuganiza kuti ndi chinthu chimodzi chokha. Lingaliro ili likhoza kukutsogolerani kuti muyike valve yomwe siingathe kupirira kapena kugwira ntchito yomwe mukufunikira.

Inde, pali mitundu yambiri ya ma valve a PVC, iliyonse ili ndi makina apadera amkati opangidwira ntchito inayake. Zofala kwambiri ndi zoyambira / kuyimitsa kuyenda (mavavu a mpira) ndikudziteteza ku reverse flow (onani mavavu).

Kuganiza kuti ma valve onse a PVC ndi ofanana ndi kulakwitsa kofala. Zoona zake, gawo la "PVC" limangofotokoza zinthu zomwe valavu imapangidwa kuchokera ku pulasitiki yolimba, yosachita dzimbiri. Gawo la "valve" limafotokoza ntchito yake. Kuti tithandize Budi ndi gulu lake kuwongolera makasitomala awo, timawaphwanya ndi ntchito yawo yayikulu. Gulu losavutali limathandiza aliyense kusankha chinthu choyenera molimba mtima.

Nayi chidule cha mitundu yodziwika bwino yomwe mungakumane nayo pakuwongolera madzi:

Mitundu inayi ya PVC ndi iti?

Mukuwona zolemba zosiyanasiyana monga PVC-U ndi C-PVC ndikudabwa ngati zili zofunika. Kugwiritsa ntchito valve yokhazikika pamzere wamadzi otentha chifukwa simunadziwe kusiyana kungayambitse kulephera koopsa.

Funso ili ndi la pulasitiki, osati mtundu wa valve. Zida zinayi zodziwika bwino za banja la PVC ndi PVC-U (yokhazikika, yamadzi ozizira), C-PVC (yamadzi otentha), PVC-O (yamphamvu kwambiri), ndi M-PVC (yosinthidwa).

Ili ndi funso labwino kwambiri chifukwa limafika pamtima pazabwino zazinthu komanso chitetezo chamagwiritsidwe. kusokoneza mitundu ya valve ndi mitundu ya zinthu ndizosavuta. Ku Pntek, timakhulupirira kuti mnzawo wophunzira ndi mnzake wopambana, kotero kumveketsa izi ndikofunikira. Zomwe valavu yanu imapangidwa kuchokera kuzomwe zimatengera kutentha kwake, kuthamanga kwake, komanso kukana kwa mankhwala.

PVC-U (Unplasticized Polyvinyl Chloride)

Uwu ndiye mtundu wodziwika bwino wa PVC womwe umagwiritsidwa ntchito popanga mapaipi, zolumikizira, ndi mavavu ku North America, Europe, ndi Asia. Ndi yolimba, yotsika mtengo, ndipo imalimbana kwambiri ndi mankhwala osiyanasiyana. Ndiwo muyezo wamadzi ozizira. Mavavu athu ambiri a Pntek ndi ma valavu owunika omwe Budi amalamula amapangidwa kuchokera ku PVC-U yapamwamba kwambiri.

C-PVC (Chlorinated Polyvinyl Chloride)

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

Mitundu Ina

PVC-O (Oriented) ndi M-PVC (Modified) sizodziwika kwambiri pa mavavu komanso pa mapaipi apadera apadera, koma ndikwabwino kudziwa kuti alipo. Amapangidwa kuti azitha kuthamanga kwambiri komanso kulimba kwamphamvu.

Kodi mavavu amitundu isanu ndi umodzi ndi iti?

Mukumanga kachitidwe kovutirapo ndipo mukusowa zambiri kuposa kungotsegula / kuzimitsa valavu. Kuwona mayina ngati "Globe" kapena "Gate" kungakhale kosokoneza ngati mumagwira ntchito ndi mavavu a mpira a PVC.

Magulu asanu ndi limodzi ogwira ntchito a ma valve ndi Mpira, Gate, Globe, Check, Butterfly, ndi Diaphragm valves. Zambiri zimapezeka mu PVC kuti zigwiritse ntchito pomwe mavavu achitsulo amatha kuwononga kapena kukhala okwera mtengo kwambiri.

Pamene tikuyang'ana pa mitundu yodziwika bwino ya PVC, kumvetsetsa banja lonse la valve kumakuthandizani kudziwa chifukwa chake ma valve ena amasankhidwa kuposa ena. Zina ndi miyezo yamakampani, pomwe zina ndi zantchito zapadera. Kudziwa kokulirapo kumathandizira gulu la Budi kuyankha ngakhale mafunso atsatanetsatane a kasitomala.

Kusamalira madzi wamba,ma valve a mpira, fufuzani ma valve,ndivalavu butterflyndi mitundu yofunika kwambiri ya PVC kudziwa.

Kodi mitundu yosiyanasiyana ya ma valve a PVC ndi ati?

Mufunika valavu kuti muteteze kubwerera, koma mumawona zosankha monga "kugwedezeka," "mpira," ndi "kasupe." Kuyika yolakwika kungayambitse kulephera, nyundo yamadzi, kapena valavu yosagwira ntchito konse.

Mitundu yayikulu ya ma cheke a PVC ndi cheke cha swing, cheke cha mpira, ndi cheke cha masika. Iliyonse imagwiritsa ntchito kachipangizo kosiyana kuti ayimitse kuyenda mobwerera m'mbuyo ndipo imagwirizana ndi momwe mapaipi amayendera komanso momwe amayendera.

Valovu yoyang'anira ndi woyang'anira wanu mwakachetechete, amadzigwirira ntchito popanda zogwirira kapena mphamvu zakunja. Koma si onse amene amagwira ntchito mofanana. Kusankha yoyenera ndikofunikira pachitetezo cha pampu ndi kukhulupirika kwadongosolo. Izi ndizomwe ndimatsindika nthawi zonse ndi Budi, chifukwa zimakhudza kudalirika kwanthawi yayitali kwamakasitomala ake.

PVC Swing Check Vavu

Uwu ndiye mtundu wosavuta. Imakhala ndi chotchinga (kapena chimbale) chomwe chimatseguka ndikuyenda kwamadzi. Kuthamanga kukayima kapena kubweza, mphamvu yokoka ndi kukanikiza kumbuyo kumasuntha chotchinga ndikutseka pampando wake. Amagwira ntchito bwino pamapaipi opingasa kapena mapaipi oyima omwe amatuluka mmwamba.

PVC Mpira Chongani Vavu

Izi ndizopadera zathu ku Pntek. Mpira wozungulira umakhala m'chipinda. Kutsogolo kumakankhira mpira kunja kwa njira yolowera. Kuthamanga kukabwerera, amakankhira mpirawo pampando, ndikupanga chisindikizo cholimba. Ndiodalirika kwambiri, amatha kuikidwa molunjika kapena mopingasa, ndipo alibe mahinji kapena akasupe kuti atha.

PVC Spring Check Valve

Mtundu uwu umagwiritsa ntchito kasupe kuti athandize kutseka valavu mofulumira pamene kutuluka kwasiya. Kutseka kofulumiraku ndikwabwino kwambiri popewa nyundo yamadzi—chiwopsezo chowononga chobwera chifukwa cha kuyima kwadzidzidzi. Iwo akhoza kuikidwa mu lathu lililonse.

Mapeto

Kusankha valavu yoyenera ya PVC kumatanthauza kumvetsetsa mtundu wake-mpira kuti uwongolere, fufuzani kubwerera mmbuyo-ndi pulasitiki yokha. Chidziwitso ichi chimatsimikizira kudalirika kwadongosolo, kumalepheretsa kulephera, komanso kumapangitsa makasitomala kudalira.