Usuzovivinya imigqa yakho ye-PVC esanda kufakwa. Uvala i-valve, kodwa umcabango ophikelelayo uvela: ingabe i-valve ingabhekana nokucindezela okukhulu, noma ingabe izoqhekeka futhi ikhukhule indawo yomsebenzi?

Cha, ukuhlolwa kokucindezela okujwayelekile ngeke konakalise i-valve yebhola ye-PVC yekhwalithi. Lawa ma-valve aklanyelwe ngokukhethekile ukubamba ingcindezi ebholeni elivaliwe. Kodwa-ke, kufanele ugweme ukucindezela okungazelelwe njengesando samanzi futhi ulandele izinqubo ezifanele.

Lokhu ukukhathazeka okuvamile, futhi yinto engivame ukuyicacisela ozakwethu, okuhlanganisa nethimba likaBudi e-Indonesia. Amakhasimende abo adinga ukuzethemba okuphelele ukuthi wethuama-valveuzokwenza ngaphansi kwengcindezi aukuhlolwa kwesistimu. Uma i-valve ibamba ngempumelelo ingcindezi, ifakazela ikhwalithi yakho kokubili i-valve nokufakwa. Ukuhlolwa okufanele wuphawu lokugcina lokuvunywa komsebenzi owenziwe kahle. Ukuqonda ukuthi kwenziwa kanjani ngokuphepha kubalulekile ekuvimbeleni izingozi nokuqinisekisa ukwethembeka kwesikhathi eside kwalo lonke uhlelo lwamapayipi amanzi.

Ungakwazi yini ukuhlola ingcindezi nge-valve yebhola?

Udinga ukuhlukanisa ingxenye yepayipi ukuze ihlolwe. Ukuvala i-valve yebhola kubonakala kunengqondo, kodwa ukhathazekile ukuthi amandla angase afake izimpawu noma aqhekeze umzimba we-valve ngokwawo.

Yebo, ungakwazi futhi kufanele uhlole ingcindezi nge-valve yebhola evaliwe. Idizayini yayo iyenza ilungele ukuzihlukanisa. Ukucindezela empeleni kusiza ngokuphusha ibhola ngokuqinile esihlalweni esingezansi, ukuthuthukisa uphawu.

Lokhu kungenye yezinzuzo eziyinhloko ze-aama-valve ebholaumklamo. Ake sibheke okwenzeka ngaphakathi. Uma uvala i-valve bese usebenzisa ingcindezi esuka ohlangothini olungenhla nomfula, lawo mandla aphusha lonke ibhola elintantayo esihlalweni esiphansi se-PTFE (Teflon). La mandla acindezela isihlalo, enze uphawu oluqinile. I-valve isebenzisa ingcindezi yokuhlola ukuze izivale ngokuphumelelayo. Yingakho i-valve yebhola iphakeme kuneminye imiklamo, njengeama-valve esango, ngale njongo. I-valve yesango ingalimala uma ivaliwe futhi ingaphansi kokucindezela okukhulu. Ukuze uthole uhlolo oluyimpumelelo, udinga kuphela ukulandela imithetho emibili elula: Okokuqala, qinisekisa ukuthi isibambo siphendulwa amadigri angu-90 agcwele endaweni evalwe ngokugcwele. I-valve evuleke kancane izohluleka ukuhlola. Okwesibili, faka ingcindezi yokuhlola (kungaba umoya noma amanzi) ohlelweni kancane kancane ukuze uvimbele noma yikuphi ukushaqeka okungazelelwe.

Ungakwazi yini ukucindezela ipayipi le-PVC?

Uhlelo lwakho olusha lwe-PVC lunamathele ngokuphelele futhi luhlanganisiwe. Kubukeka kuphelele, kodwa ukuvuza okuncane, okufihliwe ejoyintini elilodwa kungabangela umonakalo omkhulu kamuva. Udinga indlela yokuba nesiqiniseko esingu-100%.

Nakanjani. Ukuhlola ingcindezi yesistimu yepayipi ye-PVC esanda kufakwa kuyisinyathelo esingaxoxiswana sanoma yimuphi umshini osebenza ngamapayipi osebenza ngamapayipi. Lokhu kuhlola kuqinisekisa ubuqotho balo lonke uxhumo oluhlanganisiwe lwe-solvent-welded kanye nochungechunge ngaphambi kokuthi lumbozwe.

Lena inqubo ebalulekile yokulawula ikhwalithi. Ukuthola ukuvuza ngaphambi kokuba izindonga zivalwe noma imisele igcwaliswe ngemuva kulula ukuyilungisa. Ukuyithola kamuva kuyinhlekelele. Kunezindlela ezimbili eziyinhloko zokuhlolaAmapayipi e-PVC: i-hydrostatic (amanzi)kanye ne-pneumatic (umoya).

Indlela Yokuhlola	Izinzuzo	Ukubi
Amanzi (Hydrostatic)	Kuphephile, njengoba amanzi engacindezeli futhi agcina amandla amancane. Ukuvuza ngokuvamile kulula ukukubona.	Kungaba ngcolile. Idinga umthombo wamanzi kanye nendlela yokukhipha isistimu ngemva kwalokho.
Umoya (I-Pneumatic)	Isihlanzi. Kwesinye isikhathi ingathola ukuvuza okuncane kakhulu okungenzeka ukuthi amanzi angakuvezi ngokushesha.	Okuyingozi nakakhulu. Umoya ocindezelwe ugcina amandla amaningi; ukwehluleka kungase kuqhume.

Kungakhathaliseki ukuthi iyiphi indlela, umthetho obaluleke kakhulu ukulinda usimende we-solvent ukwelapha ngokugcwele. Lokhu ngokuvamile kuthatha amahora angu-24, kodwa kufanele uhlole njalo imiyalelo yomkhiqizi usimende. Ukucindezela isistimu kusenesikhathi kuzoqhumisa amalunga. Ingcindezi yokuhlola kufanele ibe cishe izikhathi ezingu-1.5 kunokucindezela kokusebenza kwesistimu, kodwa ungalokothi udlule isilinganiso sokucindezela sengxenye enesilinganiso esiphansi kakhulu ohlelweni.

Ingabe i-valve yokuhlola i-PVC ingahamba kabi?

Ipompo yakho ye-sump iyasebenza, kodwa izinga lamanzi alehli. Noma mhlawumbe iphampu ijikeleza futhi ivaliwe njalo. Usola inkinga, futhi i-valve yokuhlola engabonakali cishe iyicala.

Yebo, i-valve yokuhlola ye-PVC ingahluleka. Njengoba iwumshini onezingxenye ezihambayo, ingabhajwa ngenxa yemfucumfucu, izimpawu zayo zingaguga, noma intwasahlobo yayo ingaphuka, okuholela ekugelezeni emuva.

Hlola ama-valveamaqhawe angaculwa ezinhlelo eziningi zamapayipi amanzi, kodwa awafi. Umsebenzi wabo ukuvumela ukugeleza endaweni eyodwa kuphela. Uma behluleka, cishe njalo kuholela enkingeni. Isizathu esivame kakhuluukwehlulekayimfucumfucu. Itshe elincane, iqabunga, noma ucezu lwepulasitiki lungangena kuvalvu, luvimbele i-flapper noma ibhola ukuthi lihlale kahle. Lokhu kubamba i-valve ivuleke kancane, ivumela amanzi ukuthi agelezele emuva. Esinye isizathu ukuguga kalula. Ngaphezulu kwezinkulungwane zemijikelezo, uphawu i-flapper noma ibhola elivala ngokumelene nalo lingaguga, lidale ukuvuza okuncane, okuqhubekayo. Ku-valve yokuhlola esiza entwasahlobo, isiphethu sensimbi singagqwala ngokuhamba kwesikhathi, ikakhulukazi emanzini anokhahlo, ekugcineni silahlekelwe ukungezwani noma ukuphuka ngokuphelele. Yingakho kubalulekile ukufakahlola ama-valveendaweni efinyelelekayo ukuze ihlolwe futhi ishintshwe ekugcineni. Ziyinto elungiswayo, hhayi into ehlala unomphela.

Ingakanani ingcindezi engaphathwa yivalvu yebhola ye-PVC?

Ucacisa ama-valve ephrojekthi futhi ubone okuthi “150 PSI” eceleni. Udinga ukwazi ukuthi lokho kwanele yini kuhlelo lwakho lokusebenza, noma uma udinga inketho yomsebenzi osindayo.

Amavalvu ebhola e-PVC ajwayelekile alinganiselwa ku-150 PSI wokucindezela kwamanzi okungathuki ku-73°F (23°C). Lesi silinganiso sokucindezela sincipha kakhulu njengoba izinga lokushisa loketshezi oludlula ku-valve likhula.

Leyo mininingwane yezinga lokushisa iyingxenye ebaluleke kakhulu yokuqonda isilinganiso sokucindezela. Ipulasitiki ye-PVC iba thambile futhi iguquguquke ngokwengeziwe njengoba ishisa kakhulu. Njengoba ithambisa, ikhono layo lokumelana nokucindezela liyancipha. Lesi isimiso esiyisisekelo sezinhlelo zamapayipi e-thermoplastic engihlale ngisigcizelela noBudi neqembu lakhe. Kufanele baqondise amakhasimende abo ukuthi acabangele izinga lokushisa lokusebenza kwesistimu yabo, hhayi nje ingcindezi.

Nansi inkomba ejwayelekile yokuthi izinga lokushisa lisithinta kanjani isilinganiso sokucindezela kwevalvu ye-PVC:

Fluid Temperature	Isilinganiso Sokucindezela Okuphezulu Esilinganiselwe
73°F (23°C)	150 PSI (100%)
100°F (38°C)	110 PSI (~73%)
120°F (49°C)	75 PSI (50%)
140°F (60°C)	50 PSI (~33%)

Igama elithi “ukungathuki” nalo libalulekile. Lokhu kusho ukuthi isilinganiso sisebenza ekucindezelweni okuzinzile, okungaguquki. Ayibali ngesando samanzi, okuyi-spike yokucindezela okungazelelwe okubangelwa ukuvala kwe-valve ngokushesha okukhulu. Lesi spike singadlula kalula i-150 PSI futhi kulimaze uhlelo. Ngaso sonke isikhathi sebenzisa ama-valve kancane ukuze uvimbele lokhu.

Isiphetho

Ukuhlola ingcindezi ngeke kulimaze ikhwalithiI-valve yebhola ye-PVCuma kwenziwe ngendlela efanele. Ngaso sonke isikhathi cindezela kancane, hlala ngaphakathi kwengcindezi ye-valve nemikhawulo yezinga lokushisa, futhi uvumele usimende oncibilikayo welaphe ngokugcwele.