Ukukhetha ivalvu yepulasitiki engalungile kungaholela ekwehlulekeni kwesistimu ngenxa yokushisa noma ukusabela kwamakhemikhali. Ivalvu evuzayo ingabangela umonakalo omkhulu, ukubambezeleka kwephrojekthi, futhi ilimaze idumela lakho kumakhasimende.

Ukukhetha kuncike kuhlelo lwakho lokusebenza.i-PVC ejwayelekilengezinhlelo zamanzi abandayo njengokunisela. KhethaI-CPVCukuze kusetshenziswe imigqa yamanzi ashisayo kanye nokumelana okungcono kwamakhemikhali. Sebenzisa i-PP kumakhemikhali athile ezimboni kanye nezicelo zokudla.

Ngikhumbula ingxoxo noBudi mayelana neklayenti elalihlinzeka ngefektri entsha yokucubungula ukudla e-Indonesia. Bacishe bacaphuna yonke iphrojekthi nge-standardAmavalvu e-PVCukuze songe imali. Sixoxe ngokushesha ngemijikelezo yokuhlanza amanzi ashisayo kanye namakhemikhali athile abawasebenzisayo. Kwacaca ukuthi i-PVC ngabe yehlulekile phakathi nezinyanga ezimbalwa. Ngokuchaza umehluko phakathiI-PVC, i-CPVC, kanye ne-PP, sibasizile ukuba bakhethe izinto ezifanele, sivimbele inkinga enkulu nebiza kakhulu. Lolu hlobo lolwazi oluthile olwakha ukwethembana futhi luqinisekise impumelelo yephrojekthi.

Yikuphi okungcono nge-PVC, i-UPVC, noma i-CPVC?

Ubona i-PVC, i-UPVC, kanye ne-CPVC kubhalwe kumashidi e-spec. Zibukeka zifana, kodwa amanani ahlukile. Ukukhetha okungalungile kungasho ukuthi uthenga ivalvu ebuthakathaka noma ebiza kakhulu ngokungadingekile yomsebenzi.

I-CPVC ingcono emanzini ashisayo futhi inokumelana okuphezulu kwamakhemikhali. Kumapayipi nama-valve, i-PVC ne-UPVC empeleni ziyinto efanayo—izinto eziqinile neziqinile ezilungele ukusetshenziswa kwamanzi abandayo ajwayelekile.

Ake sicacise iphuzu elivamile lokudideka. Uma sikhuluma ngamapayipi nama-valve ePntek, igama elithi “PVC” lisho ukuthi “UPVC” (Unplasticized Polyvinyl Chloride). Liyipulasitiki eqinile nehlala isikhathi eside oyibona yonke indawo. Ngakho-ke, awudingi ukukhetha phakathi kwazo; ziyafana ngezinjongo zethu. Ukukhetha kwangempela kuphakathi kwe-PVC ne-CPVC. I-“C” ku-CPVC imele i-Chlorinated. Isinyathelo esengeziwe enkambisweni yokukhiqiza sinezela i-chlorine eningi esakhiweni sezinto. Lolu shintsho olulula yilona olunikeza i-CPVC izinzuzo zayo ezimbili ezinkulu: ingabhekana namazinga okushisa aphezulu kakhulu, futhi ingamelana nobubanzi bamakhemikhali, ikakhulukazi ama-acid kanye nezisekelo. Ngakho-ke, uma umsebenzi uhilela amanzi abandayo kuphela, i-PVC iyindlela engabizi kakhulu. Uma kuhileleke amakhemikhali okushisa noma anamandla, i-CPVC iyindlela engcono nephephile.

Iyini injongo yevalvu yebhola ye-CPVC?

Iklayenti lakho lidinga ivalvu yomugqa wamanzi ashisayo efektri noma ekhaya. Ivalvu ejwayelekile ye-PVC emhlophe ingathamba, igobe, futhi yehluleke, okubangela ukuvuza okuyingozi kanye nokungasebenzi kwesistimu.

Inhloso eyinhloko yevalvu yebhola ye-CPVC ukuphatha ngokuphephile uketshezi emazingeni okushisa aphezulu kunalokho i-PVC ejwayelekile engakumelana nakho. Yenzelwe ngqo ukusatshalaliswa kwamanzi ashisayo kanye nemigqa yoketshezi lwezimboni olubolayo.

Cabanga nge-CPVC njengenguqulo esebenza kahle kakhulu ye-PVC. Umsebenzi wayo oyinhloko ukusebenza lapho i-PVC ingakwazi khona. Amavalvu ajwayelekile e-PVC akufanele asetshenziswe kunoma yini engaphezu kuka-60°C (140°F). Ngaphezu kwalelo zinga lokushisa, izinto ziyathamba futhi zilahlekelwe amandla azo okugcina ingcindezi. I-CPVC, ngakolunye uhlangothi, isebenza kahle kakhulu kuze kufike ku-93°C (200°F). Lokhu kuyenza ibe yinto ejwayelekile yokufakelwa amanzi ashisayo nabandayo ezakhiweni zokuhlala nezebhizinisi. Ukumelana kwayo namakhemikhali okuthuthukisiwe kusho ukuthi kuyisinqumo esihle kakhulu ezindaweni zokwelashwa kwamanzi, izikhungo zokucubungula amakhemikhali, kanye nezicelo zezimboni lapho uketshezi lungase lube namandla kakhulu kune-PVC. Usebenzisa i-Ivalvu ye-CPVCuma udinga ukuqinisekisa ukusebenza kahle nokuphepha ngaphansi kokushisa kanye nokucindezeleka kwamakhemikhali.

Ingabe ama-valve ebhola e-PVC angaphatha umfutho ophezulu?

Udinga ukukhetha ivalvu yesistimu yokunisela egeleza kakhulu. Ukhathazekile ngokuthi ivalvu yepulasitiki ingase ingaqini ngokwanele futhi ingase ibe sengozini yokuqhunyiswa yingcindezi yokusebenza kwesistimu.

Yebo,Amavalvu ebhola le-PVCzenzelwe ukucindezela okuphezulu. Isilinganiso sazo esiqondile, njenge-PN10 noma i-PN16, sibonisa ukuthi zingakwazi ukusingatha ingcindezi engu-10 noma engu-16 bar, kodwa lesi silinganiso siyancipha njengoba izinga lokushisa lamanzi likhuphuka.

Leli iphuzu elibalulekile okufanele uliqonde ngokuphepha. Ivalvu yebhola ye-PN16 PVC ilinganiswe ukuphatha ingcindezi engu-16 bar (cishe i-232 PSI), okwanele ukusetshenziswa kwamanzi amaningi. Kodwa-ke, lesi silinganiso singesamanzi asezingeni lokushisa legumbi (cishe ama-20°C). Njengoba izinga lokushisa loketshezi ngaphakathi kwepayipi likhuphuka, izinto ze-PVC ziba thambile kancane, futhi ikhono layo lokubekezelela ingcindezi liyehla. Isibonelo, kuma-40°C, ivalvu efanayo ye-PN16 ingase iphephe ukuyisebenzisa kuma-10 bar kuphela. Kuma-60°C, izinga layo eliphezuluukwehla kwesilinganiso sokucindezelacishe kumabha angu-4. Yingakho ungaze usebenzise ama-valve e-PVC emanzini ashisayo ngaphansi kwengcindezi. Ngezinhlelo zokunisela ezinomfutho ophezulu ezisebenza namakhasimende e-Budi, ezisebenzisa amanzi abandayo noma okushisa okuzungezile, indinganiso yethuAmavalvu ebhola e-PVC e-PN16ziqinile futhi zithembekile ngokuphelele.

Kungani i-CPVC ibiza kakhulu kune-PVC?

Ulungiselela ikhotheshini yeklayenti futhi ubona ukuthi amavalvu e-CPVC abiza kakhulu kune-PVC. Iklayenti lakho libuza ukuthi kungani kufanele likhokhe imali eyengeziwe ngevalvu ecishe ifane.

I-CPVC ibiza kakhulu ngoba idlula esinyathelweni esengeziwe sokukhiqiza esidinga amandla amaningi esibizwa ngokuthiukukhishwa kwe-chlorineLe nqubo eyengeziwe yengeza izindleko kodwa iphumela ezintweni ezingcono kakhulu ezingaphatha ukushisa okuphezulu kanye namakhemikhali amaningi.

Umehluko wentengo uwumphumela oqondile wenqubo yokukhiqiza. Zombili izinto ziqala njenge-resin ye-PVC. Ukuze senze i-CPVC, kufanele sithathe leyo PVC siyifake ekusabeleni kwamakhemikhali okuyinkimbinkimbi ukuze siphoqelele ama-athomu e-chlorine amaningi emaketangeni e-polymer. Le nqubo idinga imishini ekhethekile, izinto zokusetshenziswa ezengeziwe (i-chlorine), kanye nenani elikhulu lamandla. Awukhokhi nje umbala ohlukile wepulasitiki; ukhokhela lobo bunjiniyela obuthuthukisiwe. Ngihlala ngitshela uBudi ukuthi achazele amakhasimende akhe njengokutshalwa kwezimali ekuphepheni nasekuthembekeni. Izindleko ezengeziwe zevalvu ye-CPVC zincane uma kuqhathaniswa nezindleko zomonakalo, isikhathi sokungasebenzi, kanye nokulungiswa okungenzeka uma besebenzisa ivalvu ye-PVC eshibhile ekusetshenzisweni kwamanzi ashisayo lapho kuqinisekisiwe ukuthi izohluleka khona. Kuyindaba evamile yokukhokha okwengeziwe ngethuluzi elifanele lomsebenzi.

I-PVC, i-CPVC, kanye ne-PP ziqhathaniswa kanjani eceleni?

Udinga inkomba esheshayo ukuze uqhathanise lezi zinto ngqo. Ukushintshashintsha phakathi kwamaphepha emikhiqizo ahlukene kuyadida futhi kuchitha isikhathi uma udinga impendulo esheshayo yeklayenti.

Leli thebula linikeza ukuqhathanisa okucacile kwe-PVC, i-CPVC, kanye ne-PP kuzo zonke izici ezibalulekile. Likusiza ukuthi ukhethe izinto ezifanele isicelo sakho ngokushesha, ukuqinisekisa ukuthi ufanisa ivalvu nomsebenzi.

Ukuze izinto zibe lula kuBudi nethimba lakhe, ngihlanganise leli phepha lokukhohlisa. Kuyindlela esheshayo yokuqhathanisa izinto esixoxe ngazo nokwethula i-Polypropylene (PP), enye inketho ebalulekile. I-PP yaziwa ngokumelana kwayo okuhle kakhulu namakhemikhali, ikakhulukazi ezincibilikisini, kanye nokuqina kwayo. Kuyisinqumo esihle kakhulu sezicelo zezimboni kanye nezinga lokudla.

Ithebula Lokuqhathanisa Izinto

Isici	I-PVC (i-Polyvinyl Chloride)	I-CPVC (i-PVC ene-chlorine)	I-PP (i-Polypropylene)
Izinga Lokushisa Eliphezulu	60°C (140°F)	93°C (200°F)	80°C (176°F)
Isilinganiso Sokucindezela	Kuhle kakhulu (emazingeni okushisa azungezile)	Kuhle kakhulu (kugcina ingcindezi kangcono uma izinga lokushisa liphezulu)	Kuhle kakhulu
Ukumelana namakhemikhali	Kuhle kakhulu kusawoti, ama-asidi, izisekelo	Kuhle kakhulu kuma-asidi, izisekelo, ama-caustics	Kuhle kakhulu kuma-solvents, ama-asidi, ama-alkali
Intengo Elinganiselwe	$ (Ebiza Kancane)	$$$ (Ebiza Kakhulu)	$$ (Ibanga Eliphakathi)
Okuhle Kakhulu Ku…	Amanzi abandayo, ukuchelela, amanzi amdaka, amachibi okubhukuda	Amapayipi amanzi ashisayo nabandayo, uketshezi lwezimboni	Ukulinganisa kwamakhemikhali, inqubo yezimboni, izinga lokudla

Isiphetho

Ukukhetha ivalvu efanele kulula: sebenzisa i-PVC emanzini abandayo, i-CPVC emanzini ashisayo kanye namakhemikhali engeziwe, kanye ne-PP ekusetshenzisweni okukhethekile kwezimboni. Ukuqondanisa izinto nomsebenzi kuqinisekisa ukuphepha nokuthembeka.