Mukuyesera kuyitanitsa ma valve, koma wogulitsa wina amawatcha PVC ndipo wina amawatcha UPVC. Kusokonezeka kumeneku kumakupangitsani kuda nkhawa kuti mukuyerekeza zinthu zosiyanasiyana kapena kugula zinthu zolakwika.

Pa ma valve olimba a mpira, palibe kusiyana pakati pa PVC ndi UPVC. Mawu onsewa amatanthauza chimodzimodzizinthu zopanda pulasitiki za polyvinyl chloride, yomwe ndi yolimba, yosagwira dzimbiri, komanso yoyenera kugwiritsa ntchito madzi.

Ili ndi limodzi mwa mafunso omwe ndimafunsidwa kawirikawiri, ndipo limabweretsa chisokonezo chosafunikira mu unyolo wogulitsa. Posachedwapa ndinkalankhula ndi Budi, manejala wogula kuchokera ku kampani yayikulu yogawa zinthu ku Indonesia. Ogula ake atsopano atsopano anali atalephera, akuganiza kuti akufunika kupeza mitundu iwiri yosiyana ya ma valve. Ndinamufotokozera kuti ma valve olimba omwe timapanga ku Pntek, komanso m'makampani ambiri, mayinawa amagwiritsidwa ntchito mosinthana. Kumvetsa chifukwa chake kudzakupatsani chidaliro mu zisankho zanu zogula.

Kodi pali kusiyana pakati pa PVC ndi UPVC?

Mumawona zilembo ziwiri zosiyana ndipo mwachibadwa mumaganiza kuti zikuyimira zinthu ziwiri zosiyana. Kukayikira kumeneku kungachedwetse ntchito zanu pamene mukuyesera kutsimikizira zofunikira zolondola.

Kwenikweni, ayi. Ponena za mapaipi olimba ndi ma valve, PVC ndi UPVC ndi ofanana. "U" mu UPVC imayimira "yopanda pulasitiki," zomwe zili kale zowona pa ma valve onse olimba a PVC.

Kusokonezeka kumeneku kumachokera ku mbiri ya mapulasitiki. Polyvinyl chloride (PVC) ndiye maziko ake. Kuti ikhale yosinthasintha pazinthu monga mapayipi a m'munda kapena kutchinjiriza waya wamagetsi, opanga amawonjezera zinthu zotchedwa mapulasitiki. Kuti asiyanitse mawonekedwe oyambira, olimba ndi osinthasintha, mawu akuti "osapangidwa pulasitiki" kapena "UPVC" adabuka. Komabe, pazinthu monga machitidwe amadzi opanikizika, simungagwiritse ntchito mtundu wosinthasintha. Mapaipi onse olimba a PVC, zolumikizira, ndi ma valve a mpira, mwachibadwa, ndi osapangidwa pulasitiki. Chifukwa chake, ngakhale makampani ena amalemba zinthu zawo kuti "UPVC" kuti zikhale zenizeni, ndipo ena amagwiritsa ntchito "PVC" yodziwika bwino, akutanthauza chinthu chomwecho cholimba komanso cholimba. Ku Pntek, timangowatcha kutiMa valve a mpira wa PVCchifukwa ndi mawu ofala kwambiri, koma onse ndi a UPVC.

Kodi ma valve a mpira a PVC ndi abwino?

Mukuona kuti PVC ndi pulasitiki ndipo mtengo wake ndi wochepa poyerekeza ndi chitsulo. Izi zimakupangitsani kukayikira ubwino wake ndikudzifunsa ngati ndi yolimba mokwanira kuti mugwiritse ntchito nthawi yayitali.

Inde, ma valve apamwamba a PVC ndi abwino kwambiri pa ntchito yawo. Sagwidwa ndi dzimbiri, ndi opepuka, ndipo amapereka moyo wautali wautumiki m'madzi ozizira, nthawi zambiri amakhala opambana ma valve achitsulo.

Mtengo wawo suli pamtengo wotsika chabe; koma uli pakugwira ntchito kwawo m'malo enaake. Ma valve achitsulo, monga mkuwa kapena chitsulo, amachita dzimbiri kapena kuzizira pakapita nthawi, makamaka m'makina okhala ndi madzi okonzedwa, madzi amchere, kapena mankhwala enaake. Kuzizira kumeneku kungayambitse valavu kuti igwire ntchito, zomwe zimapangitsa kuti zikhale zosatheka kuyitembenuza pakagwa ngozi. PVC singathe kuchita dzimbiri. Ndi yopanda mankhwala ku zowonjezera zambiri zamadzi, mchere, ndi ma asidi ofatsa. Ichi ndichifukwa chake makasitomala a Budi m'makampani opanga nsomba m'mphepete mwa nyanja ku Indonesia amagwiritsa ntchito ma valve a PVC okha. Madzi amchere amatha kuwononga ma valve achitsulo m'zaka zingapo zokha, koma ma valve athu a PVC akupitilizabe kugwira ntchito bwino kwa zaka khumi kapena kuposerapo. Pakugwiritsa ntchito kulikonse pansi pa 60°C (140°F), aValavu ya mpira wa PVCsi njira "yotsika mtengo" chabe; nthawi zambiri imakhala yodalirika komanso yokhalitsa chifukwa sidzachira ku dzimbiri.

Kodi valavu ya mpira yabwino kwambiri ndi iti?

Mukufuna kugula valavu "yabwino kwambiri" kuti muwonetsetse kuti makina anu ndi odalirika. Koma ndi zipangizo zambiri zomwe zilipo, kusankha yabwino kwambiri kumakhala kovuta komanso koopsa.

Palibe valavu imodzi yabwino kwambiri pa ntchito iliyonse. Vavu yabwino kwambiri ndi yomwe zipangizo zake ndi kapangidwe kake zimagwirizana bwino ndi kutentha kwa makina anu, kuthamanga kwa magazi, ndi malo omwe mankhwala amagwirira ntchito.

"Zabwino kwambiri" nthawi zonse zimakhala zogwirizana ndi momwe zimagwiritsidwira ntchito. Kusankha cholakwika kuli ngati kugwiritsa ntchito galimoto yamasewera kunyamula miyala—ndi chida cholakwika pantchitoyo. Valavu yachitsulo chosapanga dzimbiri ndi yabwino kwambiri kutentha kwambiri ndi kupsinjika, koma ndi yokwera mtengo kwambiri pamakina oyendera madzi a dziwe, komwe valavu ya PVC ndi yabwino chifukwa chakukana kwa chlorineNthawi zonse ndimatsogolera anzanga kuti aganizire za momwe polojekiti yawo imagwirira ntchito. Valavu ya PVC ndiyo njira yabwino kwambiri yopangira madzi ozizira chifukwa cha kukana dzimbiri komanso mtengo wake. Pa madzi otentha, muyenera kuwonjezerapoCPVCPa mpweya kapena mafuta amphamvu kwambiri, mkuwa ndi chisankho chachikhalidwe komanso chodalirika. Pazinthu zomwe zimagwiritsidwa ntchito pazakudya kapena mankhwala owononga kwambiri, chitsulo chosapanga dzimbiri nthawi zambiri chimafunika. Chisankho chabwino kwambiri ndi chomwe chimapereka chitetezo chofunikira komanso moyo wautali pamtengo wotsika kwambiri.

Buku Lothandizira Zinthu Zokhudza Valavu ya Mpira

Kodi kusiyana pakati pa PVC U ndi UPVC ndi kotani?

Pamene munaganiza kuti mwamvetsa PVC ndi UPVC, mumawona "PVC-U" pa chikalata chaukadaulo. Mawu atsopanowa akuwonjezera chisokonezo china, zomwe zimakupangitsani kukayikira kumvetsetsa kwanu.

Palibe kusiyana kulikonse. PVC-U ndi njira ina yolembera uPVC. “-U” imayimiranso unplasticized. Ndi njira yotchulira mayina yomwe nthawi zambiri imawoneka mu miyezo ya ku Europe kapena yapadziko lonse lapansi (monga DIN kapena ISO).

Taganizirani ngati kunena kuti “madola 100” poyerekeza ndi “madola 100.” Ndi mawu osiyana a chinthu chomwecho. Mu dziko la pulasitiki, madera osiyanasiyana adapanga njira zosiyana pang'ono zolembera zinthuzi. Ku North America, “PVC” ndi mawu ofala a chitoliro cholimba, ndipo “UPVC” nthawi zina amagwiritsidwa ntchito pofotokoza momveka bwino. Ku Europe komanso motsatira miyezo yapadziko lonse lapansi, “PVC-U” ndi mawu ovomerezeka kwambiri ofotokozera “osapangidwa pulasitiki.” Kwa wogula ngati Budi, ichi ndi chidziwitso chofunikira kwambiri kwa gulu lake. Akawona tender yaku Europe yomwe imafotokoza ma valve a PVC-U, amadziwa ndi chidaliro kuti ma valve athu a PVC amakwaniritsa zofunikira bwino. Zonse zimadalira pa chinthu chomwecho: polymer wolimba, wamphamvu, wosapangidwa pulasitiki womwe ndi woyenera ma valve a mpira. Musatengeke ndi zilembo; yang'anani kwambiri pa mawonekedwe a zinthuzo ndi miyezo ya magwiridwe antchito.

Mapeto

PVC, UPVC, ndi PVC-U zonse zimatanthauza zinthu zofanana zolimba komanso zopanda pulasitiki zomwe zingagwiritsidwe ntchito popanga ma valve a mpira wamadzi ozizira. Kusiyana kwa mayina ndi miyambo yachigawo kapena yakale.