Iivalvu zebhola ezineziqwenga ezimbiniziyindlela ethandwayo kwiindawo ezininzi zoshishino nezorhwebo, ingakumbi xa kulawulwa ukuhamba kolwelo. Ezi valves ziyindlela yokuzikhuselauhlobo lwevalvu yokujika ikotaesebenzisa ibhola engenanto, eneembobo, nejikelezayo ukulawula ukuhamba kwamanzi, umoya, ioyile, kunye nezinye izinto ezahlukeneyo. Kwiivalvu zebhola ezineziqwenga ezimbini, iPVC yinto eqhelekileyo ngenxa yokuqina kwayo kunye nokumelana nokugqwala.

Umsebenzi wevalvu yebhola enamacandelo amabini ulula kodwa uyasebenza. Xa isiphatho sevalvu sijikwa, ibhola engaphakathi kwevalvu iyajikeleza ukuvumela okanye ukuthintela ukuhamba kolwelo. Oku kuyenza ilungele ukusetyenziswa okufuna ulawulo oluchanekileyo lokuhamba. Ivalvu yebhola enamacandelo amabini nayo yenzelwe ukuba kube lula ukuyigcina nokuyilungisa, nto leyo eyenza ukuba ibe sisisombululo esingabizi kakhulu kumashishini amaninzi.

Kwiivalufa zebhola ezimbini zePVC, le nto ineengenelo ezininzi. I-PVC (okanye i-polyvinyl chloride) yinto ye-thermoplastic eyaziwa ngokuchasana kwayo neekhemikhali ngendlela egqwesileyo, nto leyo eyenza ukuba ilungele ukusetyenziswa apho iivalufa zidibana neendidi ezahlukeneyo zolwelo. Ukongeza,I-PVC ilula kwaye kulula ukuyifaka nokuyiphathaIkwahlala ixesha elide kakhulu, nto leyo eyenza ukuba ibe lukhetho oluhlala ixesha elide noluthembekileyo kwiivalvu zebhola ezimbini.

Omnye wemisebenzi ephambili yevalvu yebhola enamacandelo amabini kukubonelela ngokuvala okuqinileyo. Uyilo lwevalvu ludala isivalo esikhuselekileyo xa ivaliwe, okuthintela nakuphi na ukuvuza kolwelo olulawulwayo. Oku kubaluleke kakhulu kwiindawo apho ukuvuza kubiza kakhulu okanye kuyingozi. Izinto zePVC ezisetyenziswa kwiivalvu zebhola ezinamacandelo amabini ziqinisekisa ukuba ivalvu ihlala ivaliwe ixesha elide, nokuba ichaphazeleka ziikhemikhali eziqatha okanye amaqondo obushushu aphezulu.

Olunye uphawu olubalulekileyo lwevalvu yebhola enamacandelo amabini kukukwazi ukulawula ukuhamba kolwelo. Ngokujika nje isiphatho, izinga lokuhamba linokulungiswa ukuze lihlangabezane neemfuno ezithile zesicelo. Eli nqanaba lolawulo libalulekile kumashishini amaninzi, ukusuka kwizityalo zokunyanga amanzi ukuya kwiindawo zonyango lweekhemikhali. Izinto zePVC ezisetyenziswa kwiivalvu zebhola ezinamacandelo amabini ziqinisekisa ukuba zinokuhlangabezana neemfuno zokulawula ukuhamba kolwelo kwiintlobo ngeentlobo zezicelo.

Iivalvu zebhola ezineziqwenga ezibini zikwanenzuzo yokuba kulula ukuziqhaqha nokuzilungisa. Oku kuyinyani ngakumbi kwiivalvu zebhola ezineziqwenga ezibini zePVC, apho iimpawu zezixhobo ezikhaphukhaphu nezomeleleyo zenza imisebenzi yokulungisa nokulungisa ibe lula kwaye ingabizi kakhulu. Oku, kunye nokukwazi kwayo ukuvala ngokuqinileyo kunye nokulawula ukuhamba kwamanzi, kwenza ivalvu yebhola eneziqwenga ezibini zePVC ibe lukhetho oluthembekileyo nolusebenzayo kwiintlobo ngeentlobo zezicelo.

Ngamafutshane, umsebenzi wevalvu yebhola enamacandelo amabini (ingakumbi eyenziwe ngePVC) kukubonelela ngokuvala okuqinileyo, ukulawula ukuhamba kolwelo, kunye nokuba lula ukuyigcina. Xa ulawula ukuhamba kwamanzi, umoya okanye iikhemikhali, iivalvu zebhola ezinamacandelo amabini ziyindlela eguquguqukayo nethembekileyo kumashishini amaninzi. Uyilo lwayo olulula kodwa olusebenzayo kunye neenzuzo zezinto zePVC zenza ukuba ibe sisisombululo esifanelekileyo kwiintlobo ngeentlobo zezicelo.