Uxhomekeke kwiIvalvu yebhola yePVCukuvalwa okubalulekileyo, kodwa ngenye imini kuyavuza okanye kuqhekeke. Ngoku iprojekthi yakho imisiwe, umthengi wakho akonwabanga, kwaye kufuneka ujongane nomonakalo obiza kakhulu wamanzi kunye nokulungiswa.

Iivalvu zebhola zePVC zihlala zingasebenzi kakuhle ngenxa yezizathu ezintlanu eziphambili: ukuqina kakhulu ngexesha lokufakelwa, ukuguga okanye ukutywinwa okugugileyo, ukusebenzisa imisonto engahambelaniyo efana neNPT vs BSPT, ukuveza ivalvu kumaqondo obushushu angaphezu komda wayo, kunye nokuqhekeka komzimba ngenxa yoxinzelelo.

Xa ndithetha neqabane lam uBudi, sihlala sixoxa ngeengxaki zokusombulula iingxaki abathengi bakhe abajongene nazo entsimini. Ivalvu evuzayo ingabonakala ngathi yingxaki encinci, kodwa inokuba luphawu lwengxaki enkulu kakhulu kuyilo lwenkqubo okanye inkqubo yokufakela. Ukuqonda isizathu sokuba ivalvu ingaphumeleli ngundoqo ekuthinteleni ukuba ingenzeki kwakhona. Ingaphezulu nje kokutshintsha indawo ephukileyo; imalunga nokwakha iinkqubo ezithembekileyo ixesha elide. Makhe sijonge ezona zizathu ziqhelekileyo zokuba ivalvu yebhola yePVC inokukuphoxa.

Ziziphi iingxaki eziqhelekileyo ngeevalvu zebhola zePVC?

Uzama ukuqinisa i-fitting kwi-valve yakho entsha, uze uve ukuqhekeka okuncinci. I-valve ngoku ine-hairline fracture kwi-port, nto leyo eyenza ukuba ingasebenzi kwaphela ngaphambi kokuba ifakwe.

Iingxaki eziqhelekileyo zomzimba zii-ports eziqhekekileyo ngenxa yokuqina kakhulu, izibambo ezaphukileyo ngenxa yokusebenzisa amandla amaninzi, kunye nokuvuza okuvela kwisiqu. Ezi zidla ngokubangelwa ziindlela zokufakela ezingachanekanga endaweni yevalvu enengxaki.

Mhlawumbi le yeyona ngxaki ixhaphakileyo nebangela inkxwaleko endiyivayo. Umzimba wevalvu yePVC uqinile, kodwa useyiplastiki. Xa uzama ukuqinisa umbhobho onemisonto yesinyithi okanye ukufaka umsonto wePVC wabasetyhini, kulula kakhulu ukusebenzisa amandla amaninzi. Imisonto yesinyithi ebukhali isebenza njenge-wedge, ibeka uxinzelelo olukhulu lwangaphandle emzimbeni wevalvu. Oku kukhokelela ekuqhekekeni okuqale kwi-port. Ingcebiso yam kukuba uqinise ngesandla kuqala, uze usebenzise isikrufu ukujika kube kanye okanye kabini. Isitywino senziwe yiisitywini somsonto, kungekhona ngamandla amakhulu. Ukuqinisa ivalvu kakhulu akwenzi siciko singcono; kudala ivalvu ephukileyo.

Isizathu kunye noThintelo: Umonakalo womzimba

Yintoni ebangela ukuba ivalvu yePVC ingasebenzi kakuhle ngokuhamba kwexesha?

Inkqubo yakho ibisebenza ngokugqibeleleyo kangangeminyaka, kodwa ngoku ivalvu iqalise ukuthontsiza kancinci ukusuka kwisibambo. Ukuvuza kuncinci, kodwa kubonisa ukuba ivalvu iqala ukungasebenzi kakuhle ngaphakathi.

Ekuhambeni kwexesha, izitywino eziguquguqukayo ngaphakathi kwevalvu zezona ndawo zinokwenzeka ukuba zingaphumeleli. Iiringi ze-EPDM okanye ze-NBR O kwisiqu kunye nezihlalo ze-PTFE ezijikeleze ibhola zinokuqina, zinciphe, okanye ziqhekeke njengoko ixesha lihamba.

Ivalvu nganye yebhola ineseti yezivali zangaphakathi ezenza umsebenzi wokwenyani. Ezimbini ezincinciIindandatho ze-Oukujikeleza isiqu sevalvu kuthintela amanzi ekuphumeni ajikeleze isiphatho. Izitulo ezibini ezinkulu, ezimile okwesangqa zenza isitywino esijikeleze ibhola ngokwayo xa ivalvu ivaliwe. Ezi zitywino zihlala zenziwe ngezinto ezifanaIrabha ye-EPDMokanye i-PTFE. Nangona zihlala ixesha elide, azihlali zihleli. Ukuvezwa rhoqo kwiikhemikhali emanzini, njenge-chlorine, kunokubangela ukuba ziqine kwaye zibe buthathaka. Ukukhanya kwe-UV okuvela elangeni nako kunokuzitshabalalisa. Kwiminyaka emininzi yokuvulwa nokuvalwa, zinokuphela ngokulula. Le yinxalenye eqhelekileyo yobomi bevalvu. Kwizicelo ezibalulekileyo, kukuhle ukucwangcisa ukutshintshwa kwevalvu njengenxalenye yokugcinwa kwexesha elide.

Yintoni ebangela ukungasebenzi kakuhle kwevalvu yebhola ngexesha lokufakwa kwayo?

Uqhagamshele zonke iipayipi zakho, kodwa uqhagamshelo olunye luvuza kakhulu. Usebenzise iteyiphu eninzi yemisonto, kodwa amanzi asafumana indlela yokuphuma, evuza rhoqo kwiintambo.

Eyona mpazamo ixhaphakileyo yokufaka ebangela ukungaphumeleli kwangoko kukungangqinelani kwemisonto. Ukuzama ukuqhagamshela i-NPT threaded fitting kwi-BSPT valve (okanye ngokuchaseneyo) kuya kudala isitywino esingalunganga esiqinisekisiweyo ukuba siya kuvuza.

Njengoko mna noBudi besixoxa ngemarike yase-Indonesia, uhlala ubona zombini ezi zintoImigangatho ye-NPT kunye ne-BSPT. Zibukeka zifana kakhulu, kodwa azihambelani. Imisonto ye-NPT ine-engile ye-60-degree, ngelixa imisonto ye-BSPT ine-engile ye-55-degree. Ukuba uzama ukuyidibanisa, iya kunqumla umsonto ize ibophe. Awuyidali itywina elifanelekileyo; wonakalisa nje imisonto kuzo zombini iindawo. Akukho sixa se-thread sealant esinokulungisa oku kungafaniyo okusisiseko. Amanzi aya kuhlala efumana indlela edlula kwizithuba. Ngaphambi kokufakwa, kufuneka uqinisekise ukuba umsonto wesilisa kunye nomsonto wesifazane zisemgangathweni ofanayo. Olu vavanyo olunye lunokuthintela enye yezona zinto zixhaphakileyo nezinokuphepheka ngokupheleleyo zokuvuza. Le yinkcukacha encinci eyenza umahluko omkhulu.

Yintoni eyona nto ibangela ukungasebenzi kakuhle kwevalvu?

Ivalvu ijika ngequbuliso ize iqalise ukuvuza kakubi, nangona ifakwe ngokuchanekileyo. Uxinzelelo lwenkqubo luqhelekile, kwaye akukho monakalo ubonakalayo, okukushiya udidekile malunga nonobangela wokungasebenzi ngequbuliso.

Eyona nto ixhaphakileyo yokusilela kwevalvu yePVC kukudlula umda wobushushu bayo. Ukusebenzisa ivalvu yebhola yePVC eqhelekileyo kumgca wamanzi ashushu kuya kuyibangela ukuba ithambe, iguquguquke, kwaye ingaphumeleli ngokukhawuleza.

Le yingxaki ebalulekileyo yokhuseleko. I-PVC eqhelekileyo yinto ebalaseleyo, kodwa inomda ocacileyo: ubushushu. Akufanele isetyenziswe kwiindawo apho ubushushu buya kudlula i-60°C (140°F). Ngaphezulu kobu bushushu, le nto iqala ukuthamba njengetshizi eqinileyo eshiywe elangeni. Ivalvu elinganiswe kwi-16 bar yoxinzelelo kubushushu begumbi inokukwazi kuphela ukusingatha iqhekeza laloo nto ngaphambi kokuba iqale ukuguguleka. Ibhola yangaphakathi inokugoba iphume kwimo yayo engqukuva, kwaye umzimba wevalvu unokudumba. Nje ukuba oku kwenzeke, izitywini azisenakukwazi ukunxibelelana ngokuchanekileyo, nto leyo ekhokelela ekuvuza okukhulu. Ukuba isicelo sakho siquka amanzi ashushu, kufuneka usebenzise into eyenzelwe yona, efanaI-CPVCOku akusilo icebiso; ngumthetho wenkqubo ekhuselekileyo nethembekileyo.

Isiphelo

Nqanda ukungaphumeleli kwevalvu yePVC ngokuqinisa ngokuchanekileyo, ukufanisa imisonto (NPT/BSPT), ukuhlonipha umda wobushushu obungama-60°C, kunye nokuceba ukuguga kwesitywini. Ukufakelwa kunye nokusetyenziswa ngokufanelekileyo kubalulekile kwinkqubo ehlala ixesha elide nengavuziyo.