Ukukhetha ivalvu yeplastiki engalunganga kunokubangela ukungasebenzi kakuhle kwenkqubo ngenxa yobushushu okanye iikhemikhali. Ivalvu evuzayo inokubangela umonakalo omkhulu, ukulibaziseka kweprojekthi, kwaye yonakalise igama lakho kubathengi.

Ukhetho luxhomekeke kwisicelo sakho.i-PVC esemgangathwenikwiinkqubo zamanzi abandayo ezifana nokunkcenkceshela. KhethaI-CPVCkwimigca yamanzi ashushu kunye nokumelana okungcono kweekhemikhali. Sebenzisa i-PP kwiikhemikhali ezithile zoshishino kunye nokusetyenziswa komgangatho wokutya.

Ndikhumbula incoko noBudi malunga nomthengi owayebonelela ngesityalo esitsha sokulungisa ukutya eIndonesia. Baphantse bacaphula yonke le projekthi nge-standardIivalvu zePVCukuze songe imali. Sithethe ngokukhawuleza ngemijikelo yokucoca amanzi ashushu kunye neekhemikhali ezithile abazisebenzisayo. Kwacaca ukuba i-PVC ibingayi kuphumelela kwiinyanga ezimbalwa. Ngokuchaza umahluko phakathiI-PVC, i-CPVC, kunye ne-PP, sibancedile ukuba bakhethe izinto ezifanelekileyo, sithintela ingxaki enkulu nebiza kakhulu. Lolu hlobo lolwazi oluthile olwakha ukuthembana nokuqinisekisa impumelelo yeprojekthi.

Yeyiphi engcono kunePVC, UPVC, okanye CPVC?

Uyabona i-PVC, i-UPVC, kunye ne-CPVC zidweliswe kwiishethi ze-spec. Zifana, kodwa amaxabiso ahlukile. Ukukhetha gwenxa kunokuthetha ukuba uthenga ivalvu ebuthathaka okanye ebiza kakhulu ngokungeyomfuneko kulo msebenzi.

I-CPVC ingcono kumanzi ashushu kwaye inokumelana okuphezulu kweekhemikhali. Kwimibhobho kunye neevalvu, i-PVC kunye ne-UPVC zizinto ezifanayo—izinto ezomeleleyo neziqinileyo ezifanelekileyo ukusetyenziswa kwamanzi abandayo aqhelekileyo.

Masicacise ingongoma eqhelekileyo yokudideka. Xa sithetha ngemibhobho kunye neevalvu ePntek, igama elithi “PVC” lithetha “i-UPVC” (iPolyvinyl Chloride engafakwanga iplastiki). Yiplastiki eqinileyo nehlala ixesha elide oyibonayo kuyo yonke indawo. Ngoko ke, akufuneki ukhethe phakathi kwazo; ziyafana kwiinjongo zethu. Ukhetho lokwenyani luphakathi kwePVC kunye neCPVC. I-“C” kwiCPVC imele iChlorinated. Inyathelo elongezelelweyo kwinkqubo yokuvelisa longeza i-chlorine engaphezulu kwisakhiwo sezinto. Olu tshintsho lulula lunika iCPVC iingenelo zayo ezimbini eziphambili: inokumelana namaqondo obushushu aphezulu kakhulu, kwaye inokumelana noluhlu olubanzi lweekhemikhali, ngakumbi ii-asidi kunye neziseko. Ngoko ke, ukuba umsebenzi ubandakanya amanzi abandayo kuphela, iPVC lolona khetho lungabizi kakhulu. Ukuba kukho ubushushu okanye iikhemikhali ezirhabaxa, iCPVC lolona khetho lungcono nolukhuselekileyo.

Yintoni injongo yevalvu yebhola yeCPVC?

Umthengi wakho ufuna ivalvu yomgca wamanzi ashushu kumzi-mveliso okanye ekhayeni. Ivalvu yePVC emhlophe eqhelekileyo iya kuthamba, igobe, ize ingaphumeleli, nto leyo ebangela ukuvuza okuyingozi kunye nokungasebenzi kwenkqubo.

Eyona njongo iphambili yevalvu yebhola yeCPVC kukuphatha ngokukhuselekileyo ulwelo kumaqondo obushushu aphezulu kunokuba iPVC eqhelekileyo inokukwazi ukumelana nalo. Yenzelwe ngokukodwa ukusasazwa kwamanzi ashushu kunye nemibhobho yolwelo oluyingozi kwimizi-mveliso.

Cinga nge-CPVC njengohlobo oluphezulu lwe-PVC. Umsebenzi wayo ophambili kukusebenza apho i-PVC ingenako. Iivalvu zePVC eziqhelekileyo akufuneki zisetyenziswe kuyo nayiphi na into engaphezulu kwama-60°C (140°F). Ngaphezulu kobo bushushu, izinto ziyathamba kwaye zilahlekelwe bubuchule bazo bokugcina uxinzelelo. I-CPVC, kwelinye icala, isebenza ngokugqibeleleyo ukuya kuthi ga kuma-93°C (200°F). Oku kuyenza ibe yinto eqhelekileyo yokufakelwa amanzi ashushu nabandayo kwizakhiwo zokuhlala nezorhwebo. Ukumelana kwayo neekhemikhali okwandisiweyo kuthetha ukuba lukhetho oluhle kwizibonelelo zonyango lwamanzi, kwizityalo zokucubungula iikhemikhali, nakwimisebenzi yemizi-mveliso apho ulwelo lunokuba lukhuni kakhulu kwi-PVC. Usebenzisa i-Ivalvu yeCPVCxa ufuna ukuqinisekisa ukusebenza kakuhle nokhuseleko phantsi kobushushu kunye noxinzelelo lweekhemikhali.

Ngaba iivalvu zebhola zePVC zingamelana noxinzelelo oluphezulu?

Kufuneka ukhethe ivalvu yenkqubo yokunkcenkceshela ehamba kakhulu. Uxhalabile ukuba ivalvu yeplastiki isenokungabi namandla ngokwaneleyo kwaye inokuba semngciphekweni wokuqhekeka ngenxa yoxinzelelo olusebenzayo lwenkqubo.

Ewe,Iivalvu zebhola zePVCzenzelwe uxinzelelo oluphezulu. Uvavanyo lwazo oluchanekileyo, olufana ne-PN10 okanye i-PN16, lubonisa ukuba zinokumelana noxinzelelo lwe-10 okanye i-16 bar, kodwa olu vavanyo luyehla njengoko ubushushu bamanzi busanda.

Eli linqaku elibalulekileyo ekufuneka uliqonde ukuze ukhuseleke. Ivalvu yebhola ye-PN16 PVC ilinganiswe ukuba iphathe uxinzelelo lwe-16 bar (malunga ne-232 PSI), nto leyo eyaneleyo kwiindlela ezininzi zokusetyenziswa kwamanzi. Nangona kunjalo, olu linganiso lulolwamanzi kubushushu begumbi (malunga ne-20°C). Njengoko ubushushu bolwelo ngaphakathi kumbhobho bunyuka, izinto ze-PVC ziba thambile kancinci, kwaye amandla azo okumelana noxinzelelo ayehla. Umzekelo, kwi-40°C, ivalvu efanayo ye-PN16 inokuba ikhuselekile ukuyisebenzisa kwi-10 bar. Kwi-60°C, ubuninzi bayoukwehla kovavanyo loxinzeleloukuya kutsho kwiibha ezi-4. Yingakho ungaze usebenzise iivalvu zePVC emanzini ashushu phantsi koxinzelelo. Kwiinkqubo zokunkcenkceshela ezinoxinzelelo oluphezulu ezisetyenziswa ngabathengi beBudi, ezisebenzisa amanzi abandayo okanye ashushu, umgangatho wethuIivalvu zebhola zePN16 PVCziqinile kwaye zithembekile ngokupheleleyo.

Kutheni i-CPVC ibiza kakhulu kune-PVC?

Ulungiselela isaphulelo somthengi kwaye ubona ukuba iivalvu zeCPVC zibiza ngaphezulu kunezePVC. Umthengi wakho ubuza ukuba kutheni kufuneka ahlawule imali eyongezelelweyo yevalvu ekhangeleka ifana kakhulu.

I-CPVC ibiza kakhulu kuba idlula kwinqanaba elongezelelweyo lokuvelisa elisebenzisa amandla amaninzi elibizwa ngokubaukucoca nge-chlorineLe nkqubo yongezelelekileyo yongeza iindleko kodwa iphumela kwisixhobo esingcono esinokuphatha ubushushu obuphezulu kunye neekhemikhali ezininzi.

Umahluko wexabiso ubangelwa ngqo yinkqubo yokwenziwa. Zombini ezi zinto ziqala njenge-resin ye-PVC. Ukuze senze i-CPVC, kufuneka sithathe loo PVC size siyifake kwi-complex chemical reaction ukuze sinyanzele ii-athomu ze-chlorine ezingaphezulu kwi-polymer chain. Le nkqubo ifuna izixhobo ezikhethekileyo, izinto ezongezelelweyo (i-chlorine), kunye namandla amaninzi. Awuhlawuleli nje umbala owahlukileyo weplastiki; uhlawulela loo bunjineli buphambili. Ndisoloko ndixelela uBudi ukuba ayichazele abathengi bakhe njengotyalo-mali kukhuseleko kunye nokuthembeka. Ixabiso elongezelelweyo le-CPVC valve lincinci xa lithelekiswa nexabiso lomonakalo, ixesha lokungasebenzi, kunye nokulungiswa okunokwenzeka ukuba basebenzise i-PVC valve engabizi kakhulu kwisicelo samanzi ashushu apho kuqinisekisiwe ukuba iya kusilela. Yimeko eqhelekileyo yokuhlawula ngaphezulu kancinci kwisixhobo esifanelekileyo somsebenzi.

I-PVC, i-CPVC, kunye ne-PP zithelekiswa njani ecaleni kwelinye?

Udinga isalathiso esikhawulezileyo ukuze uthelekise ezi zinto ngokuthe ngqo. Ukutshintshatshintsha amaphepha emveliso eyahlukeneyo kuyadida kwaye kuchitha ixesha xa ufuna impendulo ekhawulezileyo kumthengi.

Le theyibhile inika uthelekiso olucacileyo lwe-PVC, i-CPVC, kunye ne-PP kwiinkcukacha eziphambili. Ikunceda ukhethe izinto ezifanelekileyo zesicelo sakho ngokukhawuleza, iqinisekisa ukuba ufanisa ivalvu nomsebenzi.

Ukuze izinto zibe lula kuBudi neqela lakhe, ndidibanise eli phepha lokukhohlisa. Le yindlela ekhawulezayo yokuthelekisa izinto esizixubushileyo kunye nokwazisa iPolypropylene (PP), enye indlela ebalulekileyo. I-PP yaziwa ngokumelana kwayo neekhemikhali kakuhle, ingakumbi kwizinyibilikisi, kunye nokuqina kwayo. Lukhetho oluhle kakhulu kwiimveliso kunye nokusetyenziswa komgangatho wokutya.

Itheyibhile yokuthelekisa izinto

Uphawu	I-PVC (iPolyvinyl Chloride)	I-CPVC (i-PVC eneKhlorini)	I-PP (iPolypropylene)
Ubushushu Obuphezulu	60°C (140°F)	93°C (200°F)	80°C (176°F)
Uvavanyo loxinzelelo	Igqwesile (kwiqondo lobushushu eliphakathi)	Igqwesile (igcina uxinzelelo ngcono xa kushushu kakhulu)	Kakuhle kakhulu
Ukumelana neekhemikhali	Ilungele iityuwa, ii-asidi, iziseko	Ilungele kakhulu ii-asidi, iziseko, kunye nee-caustics	Ilungele kakhulu izinyibilikisi, ii-asidi, ii-alkali
Ixabiso elithelekisekayo	$ (Engabizi kakhulu)	$$$ (Eyona ibiza kakhulu)	$$ (Uluhlu oluphakathi)
Eyona ilungileyo…	Amanzi abandayo, ukunkcenkceshela, ukuhambisa amanzi, amachibi okudada	Imibhobho yamanzi ashushu nabandayo, ulwelo lwemizi-mveliso	Umlinganiselo weekhemikhali, inkqubo yemizi-mveliso, umgangatho wokutya

Isiphelo

Ukukhetha ivalvu efanelekileyo kulula: sebenzisa iPVC emanzini abandayo, iCPVC emanzini ashushu kunye neekhemikhali ezingaphezulu, kunye nePP kwiindlela ezikhethekileyo zoshishino. Ukudibanisa izinto nomsebenzi kuqinisekisa ukhuseleko kunye nokuthembeka.