Udinga ukulawula ukuhamba kwamanzi, kodwa jonga iintlobo ezininzi zeevalvu. Ukukhetha engalunganga kunokubangela ukuvuza, ukuvaleka, okanye ukungaphumeleli ukulawula inkqubo yakho ngokufanelekileyo, nto leyo ekhokelela kumonakalo omkhulu.

Kukho iintlobo ezininzi zeevalvu zePVC, kodwa ezona zixhaphakileyo zeziiivalvu zebholayokulawula ukuvala/ukuvula,iivalvu zokujongaukuthintela ukubuya kwamanzi, kunyeiivalvu zesangoukuze kwahlulwe ngokulula. Uhlobo ngalunye lwenza umsebenzi owahlukileyo kakhulu kwinkqubo yamanzi.

Ukuqonda umsebenzi osisiseko wevalvu nganye kubalulekile. Ndisoloko ndisebenzisa umzekelo olula xa ndithetha namaqabane anjengoBudi eIndonesia. Ivalvu yebhola ifana nesibane sokukhanyisa—ivuliwe okanye icinyiwe, ngokukhawuleza. Ivalvu yesango ifana nomqobo ocothayo nowenziwe ngabom. Kwaye ivalvu yokujonga ifana nocango oluhamba calanye oluvumela izithuthi ukuba zingene kwicala elinye kuphela. Abathengi bakhe—abakhi, abalimi, abafaki bedama lokubhukuda—bafumanisa ukuba oku kwenza kube lula ukukhetha imveliso efanelekileyo. Nje ukuba uyazi ukuba ivalvu kufuneka yenze msebenzi unjani, ukhetho luyacaca.

Ngaba zonke iivalvu zePVC ziyafana?

Ubona iivalvu ezimbini zebhola zePVC ezibonakala zifana, kodwa enye ibiza kabini. Kuyathandeka ukuthenga engabizi kakhulu, kodwa uxhalabile ukuba iza kusilela kwaye ibangele intlekele.

Hayi, zonke iivalvu zePVC azifani. Zahluke kakhulu kumgangatho wezinto, izinto zokutywina, uyilo, kunye nokuchaneka kokwenziwa kwazo. Ezi zahluko zichaphazela ngokuthe ngqo ukuba ivalvu ihlala ixesha elingakanani kunye nendlela esebenza ngokuthembekileyo ngayo phantsi koxinzelelo.

Umahluko phakathi kwevalvu enkulu nevalvu embi ukwiinkcukacha ongenakuzibona rhoqo. Okokuqala yiIzinto zePVCngokwayo. Thina apha ePntek sisebenzisa i-PVC eyi-100% eyi-virgin, eqinileyo, ehlala ixesha elide, kwaye inesiphelo esikhazimlayo. Iivalvu ezingabizi kakhulu zihlala zisebenzisa i-PVC ephinde yasetyenziswa exutywe nezizalisi ezifanai-calcium carbonateOku kwenza ivalvu ibe nzima, kodwa ikwabuthathaka kakhulu kwaye ithambekele ekuqhekekeni. Okulandelayo zeziizitywinoIiringi ezimhlophe ezingaphakathi ezivala ibhola zibizwa ngokuba zizihlalo. Iivalvu ezisemgangathweni zisebenzisa ucoceko olucocekileyoI-PTFE (iTeflon)ukuze itywinwe kakuhle, ingabi nazingxabano, kwaye ihlale ixesha elide. Ezona zitshiphu zisebenzisa iiplastiki ezikumgangatho ophantsi eziguga ngokukhawuleza. Iindandatho ze-O ezimnyama kwisiqu kufuneka zibe yi-EPDM, elungele ukumelana namanzi kunye ne-UV, kungekhona irabha ye-NBR engabizi kakhulu. Ekugqibeleni, kuxhomekeke ekubeniukuchanekaUkwenziwa kwethu ngokuzenzekelayo kuqinisekisa ukuba ivalvu nganye ijika kakuhle. Iivalvu ezenziwe kakubi zinokuba nzima ukuzijika, okanye zikhululeke kangangokuba zizive zingathembekanga.

Yeyiphi engcono, ivalvu yePVC okanye yesinyithi?

Isinyithi sivakala sinzima kwaye sinamandla, ngelixa i-PVC ivakala ilula. Ingqondo yakho ithi isinyithi sisoloko siyindlela engcono, kodwa loo ngcinga inokukhokelela kwinkqubo engaphumeleliyo ekuboleni.

Akukho nanye kwezingcono; zakhiwe ngemisebenzi eyahlukeneyo. I-PVC ingcono kakhulu emanzini abandayo nakwiindawo ezirhabaxa apho isinyithi singagqwala okanye sibambe khona. Isinyithi siyimfuneko kumaqondo obushushu aphezulu, uxinzelelo oluphezulu, kunye neekhemikhali ezithile.

Ukukhetha phakathi kwe-PVC nesinyithi akubhekiselele kumandla, kuxhomekeke kwikhemistri. Eyona nzuzo inkulu ye-PVC kukubaayichaphazeleki ngumhlwa kunye nokugqwala. UBudi unomthengi kwishishini lezolimo zasemanzini owayetshintsha iivalvu zakhe zobhedu minyaka le kuba amanzi anetyuwa ayezenza zixhaphake. Ukusukela oko watshintshela kwiivalvu zethu zePVC, ebengenazo iingxaki kangangeminyaka emihlanu. Zisebenza kakuhle njengosuku lokuqala. Kulapho iPVC iphumelele khona: ukunkcenkceshela ngezichumisi, amachibi okudada, iintambo zamanzi anetyuwa, kunye nemibhobho yamanzi ngokubanzi. Nangona kunjalo, iPVC inemida yayo. Ayinakusetyenziselwa amanzi ashushu, njengoko iya kuthamba kwaye ingaphumeleli. Ikwanamazinga oxinzelelo aphantsi kunesinyithi. Ivalvu yesinyithi (njengentsimbi okanye ubhedu) yeyona ndlela ikhethwayo kwiintambo zomphunga, iinkqubo zamanzi ashushu, okanye ukusetyenziswa kwemizi-mveliso okuxinezelekileyo kakhulu. Isitshixo kukudibanisa izinto zevalvu nolwelo oluhamba kuyo.

I-PVC vs. Isinyithi: Yeyiphi omawuyikhethe?

Yintoni eyenza ivalvu yePVC 'elungileyo'?

Uthenga kwi-intanethi kwaye ufumana ivalvu yePVC ngexabiso eliphantsi kakhulu. Uzibuza ukuba ngaba kukuthenga ngobuchule okanye ukuba uthenga ingxaki yexesha elizayo eza kuvuza ngentsimbi yesi-2 kusasa.

Ivalvu yePVC "elungileyo" yenziwe nge-PVC eyi-100% emsulwa, isebenzisa izitulo zePTFE zodidi oluphezulu kunye neeringi ze-EPDM O, ijika kakuhle, kwaye ivavanyiwe kuxinzelelo kumzi-mveliso ukuqinisekisa ukuba ayivuzi.

Kukho izinto ezimbalwa endizixelela iqela likaBudi ukuba lizijonge. Okokuqala, jongaumzimba. Kufuneka ibe nesiphelo esigudileyo, esikhazimlayo kancinci. Imbonakalo engathandekiyo, efana netshokhwe idla ngokubonisa ukusetyenziswa kwezithambisi, nto leyo eyenza ukuba ibe buthathaka. Okwesibini,sebenzisa isiphatho. Ifanele ijike ngokukhawuleza nangokungaguquguqukiyo ukusuka ekuvulekeni ngokupheleleyo ukuya ekuvalekeni ngokupheleleyo. Ukuba iqinile kakhulu, ixinene, okanye ivakala ngathi ingumngxuma, ukubunjwa kwangaphakathi akulunganga. Oku kukhokelela ekuvuzeni nasekuqhekekeni kwesiphatho. Okwesithathu, khangelaiimpawu ezicacileyo. Ivalvu esemgangathweni iya kubonakaliswa ngokucacileyo ngobukhulu bayo, umlinganiselo woxinzelelo (njenge-PN10 okanye i-PN16), kunye nohlobo lwezinto (i-PVC-U). Abavelisi abadumileyo bayaziqhenya ngeenkcukacha zabo. Okokugqibela, kuxhomekeke ekuthembekeni. Kwi-Pntek, ivalvu nganye esiyenzayo ivavanywa uxinzelelo ngaphambi kokuba iphume kumzi-mveliso. Oku kuqinisekisa ukuba ayizukuvuza. Leyo yinto engabonakaliyo oyihlawulelayo: uxolo lwengqondo oluza kusebenza ngokulula.

Ngaba ivalvu entsha yePVC yenza umahluko?

Unevalvu endala eqinileyo ukuyijika okanye enokuthontsiza kancinci. Kubonakala ngathi yingxaki encinci, kodwa ukuyityeshela kungayishiya inkqubo yakho isengozini yeengxaki ezinkulu.

Ewe, ivalvu entsha yePVC yenza umahluko omkhulu. Iphucula ukhuseleko ngoko nangoko ngokutshintsha izinto ezibuthathaka, iqinisekisa isitywino esigqibeleleyo sokuthintela ukuvuza, kwaye ibonelela ngokusebenza okugudileyo nokuthembekileyo xa uyifuna kakhulu.

Ukutshintsha ivalvu endala akuyonto yokulungisa nje kuphela; kukuphucula okukhulu kwiindawo ezintathu ezibalulekileyo. Eyokuqala yileukhuseleko. Ivalvu yePVC ebisoloko iselangeni iminyaka iba buthathaka. Isibambo sinokuqhekeka, okanye okubi ngakumbi, umzimba unokuqhekeka ngenxa yengozi encinci, nto leyo ebangela izikhukula ezinkulu. Ivalvu entsha ibuyisela amandla okuqala ento leyo. Okwesibini yileukuthembeka. Ukuthontsiza kancinci kwevalvu endala kungaphezulu nje kwamanzi angasetyenziswayo; kubonisa ukuba izitywino zangaphakathi aziphumelelanga. Ivalvu entsha enezihlalo zePTFE ezintsha kunye neeringi ze-EPDM O-rings inika ukuvalwa okugqibeleleyo, okuqinileyo onokuyithemba. Okwesithathu nguukusebenza. Kwimeko engxamisekileyo, kufuneka uvale amanzi ngokukhawuleza. Ivalvu endala eqinileyo ngenxa yobudala okanye isikali ayisebenzi. Ivalvu entsha ijika kakuhle, ikunika ulawulo olukhawulezileyo. Ngexabiso elincinci leivalvu, ubuyisela ukhuseleko, ukuthembeka, kunye nomsebenzi wendawo ebalulekileyo yokulawula kwinkqubo yakho.

Isiphelo

YahlukileIivalvu zePVCukwenza imisebenzi ethile. Umgangatho uchazwa zizinto ezicocekileyo kunye nokuveliswa ngokuchanekileyo, okuqinisekisa ubomi obude kakhulu nobuthembekileyo kunendlela engabizi kakhulu.