Uthembele ku-I-valve yebhola ye-PVCngokuvalwa okubucayi, kodwa ngolunye usuku kuyavuza noma kuphuke. Manje iphrojekthi yakho imisiwe, iklayenti lakho alijabule, futhi kufanele ubhekane nomonakalo wamanzi obizayo kanye nokulungiswa.

Amavalvu ebhola le-PVC avame ukwehluleka ngenxa yezimbangela ezinhlanu eziyinhloko: ukuqina ngokweqile ngesikhathi sokufakwa, ukuguga noma izivalo ezigugile, ukusebenzisa imicu engalingani njenge-NPT vs BSPT, ukuveza ivalvu emazingeni okushisa angaphezu komkhawulo wayo, kanye nemifantu ebonakalayo ngenxa yokucindezeleka.

Uma ngikhuluma nomlingani wami uBudi, sivame ukuxoxa ngezinkinga zokuxazulula izinkinga amakhasimende akhe abhekana nazo ensimini. Ivalvu evuzayo ingase ibonakale iyinkinga encane, kodwa ingaba uphawu lwenkinga enkulu kakhulu ekwakhiweni kwesistimu noma enqubweni yokufaka. Ukuqonda ukuthi kungani ivalvu yehluleka kuyisihluthulelo sokuvimbela ukuthi iphinde yenzeke. Kungaphezu nje kokushintsha ingxenye ephukile; kumayelana nokwakha izinhlelo ezithembekile isikhathi eside. Ake sibheke izizathu ezivame kakhulu zokuthi ivalvu yebhola le-PVC ingakudumaza.

Yiziphi izinkinga ezivamile ngama-valve ebhola le-PVC?

Uzama ukuqinisa i-fitting ku-valve yakho entsha, bese uzwa ukuqhekeka okuncane. I-valve manje ine-hairline fracture echwebeni, okwenza ingasebenzi nhlobo ngaphambi kokuthi ifakwe.

Izinkinga ezivame kakhulu zomzimba ama-port aqhekekile ngenxa yokuqina ngokweqile, izibambo eziphukile ngenxa yokusebenzisa amandla amaningi, kanye nokuvuza okuvela esiqwini. Lokhu kuvame ukubangelwa amasu okufaka angalungile kune-valve enephutha.

Lokhu mhlawumbe ukwehluleka okuvamile nokukhungathekisayo engikuzwayo. Umzimba we-valve ye-PVC uqinile, kodwa useyipulasitiki. Uma uzama ukuqinisa ipayipi elinentambo yensimbi noma ukufaka intambo ye-PVC yesifazane, kulula kakhulu ukusebenzisa amandla amaningi kakhulu. Izintambo zensimbi ezibukhali zisebenza njenge-wedge, zibeka ingcindezi enkulu yangaphandle emzimbeni we-valve. Lokhu kuholela ekuqhekekeni okuqala echwebeni. Iseluleko sami ukuthi uhlale uqinisa ngesandla kuqala, bese usebenzisa isikrufu ukujika okukodwa noma okubili kuphela. Ukuvalwa kwenziwa yi-isivali sentambo, hhayi ngamandla amakhulu. Ukuqinisa ivalvu ngokweqile akudali ukuvalwa okungcono; kumane kudala ivalvu ephukile.

Imbangela Nokuvimbela: Umonakalo Ongokomzimba

Yini ebangela ukuthi ivalvu ye-PVC yehluleke ngokuhamba kwesikhathi?

Uhlelo lwakho belusebenza kahle iminyaka eminingi, kodwa manje ivalvu isiqalile ukuconsa kancane esibambweni. Ukuvuza kuncane, kodwa kukhombisa ukuthi ivalvu isiqala ukwehluleka ngaphakathi.

Ngokuhamba kwesikhathi, izivalo eziguquguqukayo ngaphakathi kwevalvu yizona ezivame kakhulu ukwehluleka. Ama-EPDM noma ama-NBR O-rings esiqwini kanye nezihlalo ze-PTFE ezizungeze ibhola zingaqina, zinciphe, noma ziqhekeke njengoba zikhula.

I-valve ngayinye yebhola inesethi yezivalo zangaphakathi ezenza umsebenzi wangempela. Ezimbili ezincaneAma-O-ringsi-valve stem ivimbela amanzi ukuthi angaphumi eduze kwesibambo. Izihlalo ezimbili ezinkulu, ezimise okwendandatho zakha uphawu oluzungeze ibhola uqobo lapho i-valve ivaliwe. Lezi zimpawu zivame ukwenziwa ngezinto ezifanaIrabha ye-EPDMnoma i-PTFE. Nakuba zihlala isikhathi eside kakhulu, azihlali isikhathi eside. Ukuchayeka njalo kumakhemikhali emanzini, njenge-chlorine, kungabangela ukuthi ziqine futhi ziqhekeke. Ukukhanya kwe-UV okuvela elangeni nakho kungazilimaza. Eminyakeni eminingi yokuvulwa nokuvalwa, zingaphela kalula. Lena yingxenye evamile yomjikelezo wokuphila kwevalvu. Ngezicelo ezibalulekile, kuwumkhuba omuhle ukuhlela ukushintshwa kwevalvu njengengxenye yokugcinwa kwesikhathi eside.

Yini ebangela ukwehluleka kwevalvu yebhola ngesikhathi sokufakwa?

Uxhume wonke amapayipi akho, kodwa uxhumano olulodwa lunokuvuza okungapheli. Usebenzise i-thread tape eningi, kodwa amanzi asathola indlela yokuphuma, econsa njalo emicu.

Iphutha elivame kakhulu lokufaka elibangela ukwehluleka ngokushesha ukungafani kwentambo. Ukuzama ukuxhuma i-NPT threaded fitting ku-valve ye-BSPT (noma okuphambene nalokho) kuzodala uphawu olunephutha oluqinisekisiwe ukuthi luzovuza.

Njengoba mina noBudi sixoxile ngemakethe yase-Indonesia, uvame ukubona kokubiliIzindinganiso ze-NPT kanye ne-BSPT. Zibukeka zifana kakhulu, kodwa azihambisani. Imicu ye-NPT ine-engeli engama-degree angu-60, kuyilapho imicu ye-BSPT ine-engeli engama-degree angu-55. Uma uzama ukuyihlanganisa, izowela intambo bese ibopha. Awudali uphawu olufanele; umane ulimaza imicu kuzo zombili izingxenye. Akukho silinganiso se-thread sealant esingalungisa lokhu kungafani okuyisisekelo. Amanzi azohlala ethola indlela edlula ezikhaleni. Ngaphambi kokufakwa kwanoma yikuphi, kufanele uqinisekise ukuthi intambo yesilisa nentambo yesifazane ziyindinganiso efanayo. Lokhu kuhlola okukodwa kungavimbela enye yezimbangela ezivame kakhulu nezigwemekayo zokuvuza. Lena imininingwane encane eyenza umehluko omkhulu.

Iyini imbangela evame kakhulu yokwehluleka kwe-valve?

Ivalvu ivele igobe futhi iqale ukuvuza kabi, yize ifakwe kahle. Umfutho wohlelo ujwayelekile, futhi akukho monakalo obonakalayo, okukushiya udidekile ngembangela yokwehluleka okungazelelwe.

Imbangela eyodwa evame kakhulu yokwehluleka kwe-valve ye-PVC eyingozi ukweqa umkhawulo wayo wokushisa. Ukusebenzisa i-valve yebhola ye-PVC ejwayelekile emgqeni wamanzi ashisayo kuzokwenza ukuthi ithambe, iguquguquke, futhi yehluleke ngokushesha.

Lena inkinga ebalulekile yokuphepha. I-PVC ejwayelekile iyinto enhle kakhulu, kodwa inomkhawulo ocacile: ukushisa. Akufanele isetshenziswe ezindaweni lapho izinga lokushisa lizodlula khona ama-60°C (140°F). Ngaphezu kwaleli zinga lokushisa, into iqala ukuthamba njengoshizi oqinile oshiywe elangeni. I-valve elinganiswe nge-16 bar yokucindezela ekamelweni ingase ikwazi ukusingatha ingxenye encane yalokho ngaphambi kokuba iqale ukonakala. Ibhola langaphakathi lingaphuma esimweni salo esiyindilinga, futhi umzimba we-valve ungavuvukala. Uma lokhu sekwenzekile, izivalo azisakwazi ukuxhumana kahle, okuholela ekuvuza okukhulu. Uma isicelo sakho sihilela amanzi ashisayo, kufanele usebenzise into eyenzelwe yona, njengokuthiI-CPVCLokhu akusikho ukusikisela; kungumthetho wesistimu ephephile nethembekile.

Isiphetho

Vimbela ukwehluleka kwevalvu ye-PVC ngokuqinisa kahle, ukuhlanganisa imicu (NPT/BSPT), ukuhlonipha umkhawulo wokushisa ongu-60°C, kanye nokuhlela ukuguga kwesivalo. Ukufakwa kanye nokusetshenziswa okufanele kuyisihluthulelo sesistimu ehlala isikhathi eside, engavuzi.