Usuzohlola izintambo zakho ze-PVC ezisanda kufakwa. Uvala ivalvu, kodwa kuvela umcabango okhathazayo: ingabe ivalvu ingamelana nokucindezela okukhulu, noma izoqhekeka futhi igcwalise indawo yokusebenza?

Cha, ukuhlolwa kwengcindezi okujwayelekile ngeke kulimaze ivalvu yebhola ye-PVC esezingeni eliphezulu. Lawa mavalvu aklanyelwe ngqo ukubamba ingcindezi ebholeni elivaliwe. Kodwa-ke, kufanele ugweme ukuqhuma kwengcindezi okungazelelwe njengesando samanzi futhi ulandele izinqubo ezifanele.

Lokhu kuyinto evame kakhulu ukukhathazeka, futhi kuyinto engivame ukuyicacisela ozakwethu bami, okuhlanganisa nethimba likaBudi e-Indonesia. Amakhasimende abo adinga ukuqiniseka okuphelele ukuthiamavalvuizosebenza ngaphansi kokucindezeleka kwe-ukuhlolwa kwesistimu. Uma ivalvu ibamba ingcindezi ngempumelelo, ifakazela ikhwalithi yevalvu kanye nokufakwa kwayo. Ukuhlolwa okufanele kuwuphawu lokugcina lokuvunyelwa komsebenzi owenziwe kahle. Ukuqonda ukuthi ungakwenza kanjani ngokuphephile kubalulekile ekuvimbeleni izingozi nokuqinisekisa ukuthembeka kwesikhathi eside kohlelo lonke lwamapayipi.

Ungakwazi yini ukuhlola ingcindezi ngokumelene ne-ball valve?

Udinga ukuhlukanisa ingxenye yepayipi ukuze uyihlole. Ukuvala ivalvu yebhola kubonakala kunengqondo, kodwa ukhathazekile ukuthi amandla angase aphazamise izivalo noma aze aqhekeze umzimba wevalvu uqobo.

Yebo, ungakwazi futhi kufanele uvivinye ingcindezi nge-valve yebhola evaliwe. Ukwakheka kwayo kwenza kube kuhle kakhulu ukuhlukaniswa. Ingcindezi empeleni iyasiza ngokusunduza ibhola ngokuqinile esihlalweni esingezansi, okuthuthukisa isivalo.

Lokhu kungenye yezinzuzo eziyinhloko ze-amavalvu ebholaumklamo. Ake sibheke ukuthi kwenzekani ngaphakathi. Uma uvala ivalvu bese usebenzisa ingcindezi evela ohlangothini oluphezulu, lawo mandla asunduza lonke ibhola elintantayo esihlalweni se-PTFE (Teflon) esingezansi. La mandla acindezela isihlalo, adale uphawu oluqinile kakhulu. Ivalvu isebenzisa ngokoqobo ingcindezi yokuhlola ukuze izivale kahle kakhulu. Yingakho ivalvu yebhola ingcono kuneminye imiklamo, njengokuthiamavalvu esango, ngale njongo. Ivalvu yesango ingonakala uma ivaliwe futhi icindezelwa kakhulu. Ukuze uvivinye ngempumelelo, udinga ukulandela imithetho emibili elula kuphela: Okokuqala, qiniseka ukuthi isibambo sijikiswa amadigri angu-90 agcwele endaweni evaliwe ngokuphelele. Ivalvu evulekile kancane izohluleka ukuhlolwa. Okwesibili, faka ingcindezi yokuhlola (kungakhathaliseki ukuthi umoya noma amanzi) ohlelweni kancane kancane ukuze uvimbele noma yikuphi ukushaqeka okungazelelwe.

Ungakwazi yini ukuhlola ipayipi le-PVC ngengcindezi?

Uhlelo lwakho olusha lwe-PVC lunamathelisiwe futhi luhlanganiswe ngokuphelele. Lubukeka luphelele, kodwa ukuvuza okuncane, okufihliwe kwelinye ilungu kungabangela umonakalo omkhulu kamuva. Udinga indlela yokuqiniseka ngokuphelele.

Impela. Ukuhlolwa kwengcindezi ohlelweni lwamapayipi e-PVC olusanda kufakwa kuyisinyathelo esingenakuxoxiswana ngaso kunoma yimuphi uchwepheshe wokufaka amapayipi. Lokhu kuhlolwa kuqinisekisa ubuqotho bawo wonke amalunga ahlanganisiwe kanye nokuxhumeka okunentambo ngaphambi kokuba kuvalwe.

Lena inqubo ebalulekile yokulawula ikhwalithi. Ukuthola ukuvuza ngaphambi kokuba izindonga zivaliwe noma imisele igcwaliswe emuva kulula ukuyilungisa. Ukukuthola kamuva kuyinhlekelele. Kunezindlela ezimbili eziyinhloko zokuhlolaAmapayipi e-PVC: amanzi angenawo umoya (hydrostatic)kanye nomoya (umoya).

Indlela Yokuhlola	Izinzuzo	Ukungalungi
Amanzi (Amanzi Angashintshi)	Kuphephile, njengoba amanzi engacindezeli futhi egcina amandla amancane. Ukuvuza kuvame ukubonakala kalula.	Kungaba yingozi. Kudinga umthombo wamanzi kanye nendlela yokukhipha amanzi ohlelweni ngemva kwalokho.
Umoya (womoya)	Ukuhlanza. Ngezinye izikhathi ungathola ukuvuza okuncane kakhulu okungase kungadalulwa amanzi ngokushesha.	Kuyingozi kakhulu. Umoya ocindezelwe ugcina amandla amaningi; ukwehluleka kungaba yinto eqhumayo.

Kungakhathaliseki ukuthi iyiphi indlela, umthetho obaluleke kakhulu ukulinda ukuthi usimende we-solvent uphole ngokuphelele. Lokhu ngokuvamile kuthatha amahora angama-24, kodwa kufanele uhlole njalo imiyalelo yomenzi wesimende. Ukucindezela uhlelo kusenesikhathi kakhulu kuzoqhumisa amalunga. Ingcindezi yokuhlola kufanele ibe cishe izikhathi eziyi-1.5 kunengcindezi yokusebenza kwesistimu, kodwa ungalokothi udlule isilinganiso sengcindezi sengxenye ephansi kakhulu ohlelweni.

Ingabe i-valve yokuhlola i-PVC ingaba yingozi?

Iphampu yakho ye-sump iyasebenza, kodwa izinga lamanzi alinciphi. Noma mhlawumbe iphampu iqhubeka ivuleka futhi ivale njalo. Usola ukuthi kunenkinga, futhi i-check valve engabonakali iyimbangela.

Yebo, i-PVC check valve ingahluleka. Njengoba iyithuluzi lomshini elinezingxenye ezihambayo, lingabhajwa ngenxa yemfucumfucu, izivalo zalo zingaguga, noma isipilingi salo singaphuka, okuholela ekugelezeni kwamanzi emuva.

Hlola ama-valvebangamaqhawe angadunyiswanga ezinhlelweni eziningi zokufaka amapayipi, kodwa abafi. Umsebenzi wabo ukuvumela ukugeleza komoya ohlangothini olulodwa kuphela. Uma behluleka, cishe njalo kuholela enkingeni. Imbangela evame kakhulu yalokhuukwehlulekakuyimfucumfucu. Itshe elincane, iqabunga, noma ucezu lwepulasitiki lungangena ku-valve, okuvimbela i-flapper noma ibhola ukuthi lihlale kahle. Lokhu kugcina i-valve ivulekile kancane, okuvumela amanzi ukuthi ageleze emuva. Esinye isizathu ukuguguleka okulula. Emijikelezweni eyizinkulungwane, uphawu oluvalwa yi-flapper noma ibhola lungaguguleka, kudale ukuvuza okuncane okuqhubekayo. Ku-valve yokuhlola esizwa yintwasahlobo, i-spring yensimbi ingaguguleka ngokuhamba kwesikhathi, ikakhulukazi emanzini aqinile, ekugcineni ilahlekelwe ukucindezeleka noma iphuke ngokuphelele. Yingakho kubalulekile ukufakaama-valve okuhlolaendaweni efinyeleleka kalula yokuhlola nokufaka esikhundleni sayo. Ziyinto yokulungisa, hhayi into ehlala njalo.

Ingakanani ingcindezi engayibamba ivalvu yebhola le-PVC?

Ucacisa ama-valve ephrojekthi bese ubona u-“150 PSI” eceleni. Udinga ukwazi ukuthi lokho kwanele yini kuhlelo lwakho lokusebenza, noma ukuthi udinga inketho enzima.

Amavalvu ebhola ajwayelekile e-PVC avame ukulinganiselwa ku-150 PSI yokucindezela kwamanzi okungathuki ku-73°F (23°C). Lesi silinganiso sokucindezela sincipha kakhulu njengoba izinga lokushisa loketshezi oludlula kuvalvu likhuphuka.

Leyo mininingwane yokushisa iyingxenye ebaluleke kakhulu yokuqonda isilinganiso sokucindezela. Ipulasitiki ye-PVC iba thambile futhi iguquguquke njengoba ishisa kakhulu. Njengoba ithamba, ikhono layo lokubekezelela ukucindezela liyancishiswa. Lesi yisimiso esiyisisekelo sezinhlelo zamapayipi e-thermoplastic engihlala ngisigcizelela kuBudi nethimba lakhe. Kumelwe baqondise amakhasimende abo ukuthi acabangele izinga lokushisa lokusebenza kwesistimu yabo, hhayi nje ukucindezela.

Nasi umhlahlandlela ojwayelekile wokuthi izinga lokushisa lithinta kanjani isilinganiso sokucindezela kwevalvu ye-PVC:

Izinga Lokushisa Loketshezi	Isilinganiso Sokucindezela Okuphezulu Esilinganiselwe
73°F (23°C)	I-PSI engu-150 (100%)
100°F (38°C)	I-PSI engu-110 (~73%)
120°F (49°C)	I-PSI engu-75 (50%)
140°F (60°C)	I-50 PSI (~33%)

Igama elithi “ukungashaqeki” nalo libalulekile. Lokhu kusho ukuthi isilinganiso sisebenza ekucindezelekeni okuzinzile nokuqhubekayo. Akubheki isando samanzi, okuwukukhuphuka kwengcindezi okungazelelwe okubangelwa ukuvala ivalvu ngokushesha kakhulu. Lokhu kukhuphuka kungadlula kalula i-150 PSI futhi kulimaze uhlelo. Njalo sebenzisa amavalvu kancane ukuze uvimbele lokhu.

Isiphetho

Ukuhlolwa kwengcindezi ngeke kulimaze ikhwalithiI-valve yebhola ye-PVCuma kwenziwe kahle. Hlala ucindezela kancane, hlala ngaphakathi kwemingcele yengcindezi kanye nokushisa kwevalvu, bese uvumela i-solvent cement iphole ngokuphelele.