Kusankha valavu yolakwika ya pulasitiki kungayambitse kulephera kwa dongosolo chifukwa cha kutentha kapena kusintha kwa mankhwala. Vavu yotuluka madzi ingayambitse kuwonongeka kwakukulu, kuchedwa kwa ntchito, komanso kuwononga mbiri yanu kwa makasitomala.

Kusankha kumadalira pulogalamu yanu.PVC yokhazikikapa njira zamadzi ozizira monga kuthirira. SankhaniCPVCGwiritsani ntchito PP pa mankhwala enaake a m'mafakitale komanso zakudya zosiyanasiyana.

Ndikukumbukira kukambirana ndi Budi za kasitomala amene ankapereka fakitale yatsopano yokonza chakudya ku Indonesia. Anatsala pang'ono kunena za polojekiti yonse ndi muyezo.Ma valve a PVCkuti tisunge ndalama. Tinakambirana mwachangu za njira zoyeretsera madzi otentha komanso mankhwala omwe amagwiritsa ntchito. Zinaonekeratu kuti PVC ikanalephera kugwira ntchito mkati mwa miyezi ingapo. Mwa kufotokoza kusiyana pakati paPVC, CPVC, ndi PP, tinawathandiza kusankha zinthu zoyenera, kupewa vuto lalikulu komanso lokwera mtengo. Ndi chidziwitso chamtunduwu chomwe chimalimbitsa chidaliro ndikutsimikizira kuti polojekitiyo ipambana.

Ndi iti yabwino kuposa PVC, UPVC, kapena CPVC?

Mukuwona PVC, UPVC, ndi CPVC zomwe zalembedwa pamapepala ofotokozera. Zimawoneka zofanana, koma mitengo yake ndi yosiyana. Kusankha molakwika kungatanthauze kuti mugula valavu yofooka kapena yokwera mtengo kwambiri pantchitoyo.

CPVC ndi yabwino kwambiri pamadzi otentha ndipo imakhala yolimba kwambiri. Pa mapaipi ndi ma valve, PVC ndi UPVC ndi chinthu chimodzi—chinthu cholimba komanso cholimba chomwe chimagwiritsidwa ntchito pamadzi ozizira.

Tiyeni tithetse chisokonezo chomwe chimadziwika kwambiri. Tikamalankhula za mapaipi ndi ma valve ku Pntek, "PVC" kwenikweni imatanthauza "UPVC" (Unplasticized Polyvinyl Chloride). Ndi pulasitiki yolimba komanso yolimba yomwe mumaiona kulikonse. Chifukwa chake, simuyenera kusankha pakati pawo; ndi ofanana pazifukwa zathu. Chosankha chenicheni chili pakati pa PVC ndi CPVC. "C" mu CPVC imayimira Chlorinated. Gawo lina popanga limawonjezera chlorine yambiri ku kapangidwe ka zinthuzo. Kusintha kosavuta kumeneku ndi komwe kumapatsa CPVC ubwino wake waukulu awiri: imatha kuthana ndi kutentha kwambiri, ndipo imatha kukana mitundu yosiyanasiyana ya mankhwala, makamaka ma acid ndi maziko. Chifukwa chake, ngati ntchitoyo ikuphatikizapo madzi ozizira okha, PVC ndiye chisankho chotsika mtengo kwambiri. Ngati kutentha kapena mankhwala amphamvu akugwiritsidwa ntchito, CPVC ndiye njira yabwino komanso yotetezeka.

Kodi cholinga cha valavu ya mpira wa CPVC ndi chiyani?

Kasitomala wanu akufunika valavu yogwiritsira ntchito chingwe cha madzi otentha mufakitale kapena m'nyumba. Vavu yoyera ya PVC yokhazikika ingafewetse, ipindike, ndikulephera, zomwe zimapangitsa kuti madzi atuluke komanso kuti makina asamagwire ntchito.

Cholinga chachikulu cha valavu ya mpira wa CPVC ndikusamalira bwino madzi otentha kuposa momwe PVC wamba ingapiririre. Yapangidwira makamaka kugawa madzi otentha ndi mizere yamadzimadzi owononga mafakitale.

Ganizirani za CPVC ngati mtundu wa PVC wochita bwino kwambiri. Ntchito yake yayikulu ndikugwira ntchito pomwe PVC singathe. Ma valve wamba a PVC sayenera kugwiritsidwa ntchito pa kutentha kopitilira 60°C (140°F). Kupitirira kutentha kumeneko, zinthuzo zimafewa ndikutaya mphamvu yake yogwira ntchito. Komabe, CPVC imagwira ntchito bwino kwambiri mpaka 93°C (200°F). Izi zimapangitsa kuti ikhale chinthu chokhazikika cha mapaipi amadzi otentha ndi ozizira m'nyumba zogona komanso zamalonda. Kukana kwake mankhwala kumatanthauzanso kuti ndi chisankho chabwino kwambiri pa malo oyeretsera madzi, mafakitale opangira mankhwala, komanso mafakitale komwe madziwo angakhale amphamvu kwambiri pa PVC. Mumagwiritsa ntchitoValavu ya CPVCpamene mukufunika kutsimikizira kuti zinthu zikuyenda bwino komanso kuti zinthu zikuyenda bwino mukakumana ndi kutentha ndi mankhwala.

Kodi ma valve a mpira a PVC amatha kuthana ndi kuthamanga kwambiri?

Muyenera kusankha valavu yothirira madzi ambiri. Mukuda nkhawa kuti valavu yapulasitiki singakhale yolimba mokwanira ndipo ikhoza kuphulika chifukwa cha mphamvu yogwira ntchito ya valavuyo.

Inde,Ma valve a mpira wa PVCamapangidwira kuti azitha kupirira kuthamanga kwambiri. Kuyesa kwawo kolondola, monga PN10 kapena PN16, kumasonyeza kuti amatha kuthana ndi kuthamanga kwa 10 kapena 16 bar, koma kuyesa kumeneku kumachepa pamene kutentha kwa madzi kukukwera.

Iyi ndi mfundo yofunika kumvetsetsa kuti ikhale yotetezeka. Valavu ya mpira ya PN16 PVC imayesedwa kuti igwire kupanikizika kwa mipiringidzo 16 (pafupifupi 232 PSI), zomwe ndizokwanira kugwiritsa ntchito madzi ambiri. Komabe, kuyesedwa kumeneku ndi kwa madzi kutentha kwa chipinda (pafupifupi 20°C). Pamene kutentha kwa madzi mkati mwa chitoliro kukukwera, zinthu za PVC zimakhala zofewa pang'ono, ndipo mphamvu yake yopirira kupanikizika imatsika. Mwachitsanzo, pa 40°C, valavu yomweyo ya PN16 ingakhale yotetezeka kugwiritsa ntchito pa mipiringidzo 10 yokha. Pa 60°C, mphamvu yake yokwanira ndi yokwanira.kutsika kwa kupanikizikampaka pafupifupi mipiringidzo 4. Ichi ndichifukwa chake simuyenera kugwiritsa ntchito ma valve a PVC pamadzi otentha omwe ali ndi mphamvu. Pa makina othirira omwe ali ndi mphamvu zambiri, makasitomala a Budi amagwiritsa ntchito, omwe amagwiritsa ntchito madzi ozizira kapena otentha, muyezo wathuMa valve a mpira wa PN16 PVCndi olimba komanso odalirika.

Chifukwa chiyani CPVC ndi yokwera mtengo kuposa PVC?

Mukukonzekera mtengo wa kasitomala ndipo mukuwona kuti ma valve a CPVC ndi okwera mtengo kuposa a PVC. Kasitomala wanu akufunsa chifukwa chake ayenera kulipira ndalama zowonjezera pa valve yomwe imawoneka ngati yofanana.

CPVC ndi yokwera mtengo chifukwa imadutsa mu gawo lina lowonjezera lopanga zinthu lomwe limafuna mphamvu zambiri lotchedwakusakaniza chlorineNjira yowonjezerayi imawonjezera mtengo koma imabweretsa chinthu chabwino kwambiri chomwe chingathe kupirira kutentha kwambiri komanso mankhwala ambiri.

Kusiyana kwa mitengo kumachokera mwachindunji ku njira yopangira. Zipangizo zonsezi zimayamba ngati utomoni wa PVC. Kuti tipange CPVC, tiyenera kutenga PVC imeneyo ndikuyiyika mu njira yovuta ya mankhwala kuti ikakamize maatomu ambiri a chlorine ku unyolo wa polima. Njirayi imafuna zida zapadera, zinthu zowonjezera (chlorine), ndi mphamvu zambiri. Simukungolipira mtundu wina wa pulasitiki; mukulipira uinjiniya wapamwamba. Nthawi zonse ndimauza Budi kuti afotokoze kwa makasitomala ake ngati ndalama zogulira chitetezo ndi kudalirika. Mtengo wowonjezera wa valavu ya CPVC ndi wochepa poyerekeza ndi mtengo wa kuwonongeka, nthawi yopuma, ndi kukonzanso komwe kungachitike ngati atagwiritsa ntchito valavu ya PVC yotsika mtengo mu ntchito yamadzi otentha komwe ikutsimikizika kuti ingalephereke. Ndi nkhani yakale yolipira ndalama zambiri pa chida choyenera pantchitoyo.

Kodi PVC, CPVC, ndi PP zimafanana bwanji mbali ndi mbali?

Mukufunika kufotokozedwa mwachidule kuti muyerekezere zinthuzi mwachindunji. Kusinthasintha pakati pa mapepala osiyanasiyana azinthu kumasokoneza ndipo kumawononga nthawi mukafuna yankho lachangu kwa kasitomala.

Tebulo ili likuwonetsa bwino kufananiza kwa PVC, CPVC, ndi PP m'magawo ofunikira. Limakuthandizani kusankha zinthu zoyenera kugwiritsa ntchito mwachangu, ndikuwonetsetsa kuti valavu ikugwirizana ndi ntchitoyo.

Kuti zinthu zikhale zosavuta kwa Budi ndi gulu lake, ndapanga pepala lachinyengo ili. Ndi njira yachangu kwambiri yofananizira zinthu zomwe takambirana ndikuyambitsa Polypropylene (PP), njira ina yofunika kwambiri. PP imadziwika chifukwa cha kukana kwake mankhwala, makamaka ku zosungunulira, komanso kulimba kwake. Ndi chisankho chabwino kwambiri pamafakitale ndi zakudya.

Tebulo Loyerekeza Zinthu

Mbali	PVC (Polyvinyl Chloride)	CPVC (PVC yokhala ndi chlorine)	PP (Polypropylene)
Kutentha Kwambiri	60°C (140°F)	93°C (200°F)	80°C (176°F)
Kuyeza kwa Kupanikizika	Zabwino kwambiri (pa kutentha kozungulira)	Zabwino kwambiri (zimasunga kuthamanga bwino kutentha kwambiri)	Zabwino kwambiri
Kukana Mankhwala	Zabwino pa mchere, asidi, ndi maziko	Zabwino kwambiri pa ma acid, maziko, ndi ma caustics	Zabwino kwambiri pa zosungunulira, ma asidi, ndi ma alkali
Mtengo Wachibale	$ (Yotsika mtengo)	$$$ (Yokwera Mtengo Kwambiri)	$$ (Pakati pa Range)
Zabwino Kwambiri…	Madzi ozizira, kuthirira, kukhetsa madzi, maiwe	Mapaipi amadzi otentha ndi ozizira, zakumwa zamafakitale	Mlingo wa mankhwala, njira zamafakitale, zakudya zopatsa thanzi

Mapeto

Kusankha valavu yoyenera n'kosavuta: gwiritsani ntchito PVC pamadzi ozizira, CPVC pamadzi otentha ndi mankhwala ena ambiri, ndi PP pa ntchito zapadera zamafakitale. Kugwirizanitsa zinthuzo ndi ntchitoyo kumatsimikizira chitetezo ndi kudalirika.