Ufaka ivalvu entsha ye-PVC, kodwa ivuza njalo kusuka ezintanjeni. Manje usunokuvuza okuqhubekayo okuphazamisa umsebenzi wakho futhi kulimaze idumela lakho kumakhasimende.

Vimbela ukuvuza ngokusebenzisa ama-wraps angu-5-8 e-PTFE tape, uqinise amajika angu-1-2 kuphela udlule ekuqineni ngesandla, futhi uqinisekise ukuthi izintambo ziyafana (NPT kuya ku-NPT). Ukuqinisa kakhulu kuyaphula ivalvu futhi kuyiphutha elivame kakhulu lokufakwa.

Ngivame ukutshela umlingani wami uMohommad ukuthi "ukwehluleka" kwama-valve amaningi empeleni kuwukwehluleka kokufakwa. Ukuconsa okuncane okuvela ekuxhumaneni okunentambo kungakhungathekisa kakhulu, kodwa kuyisibonakaliso esicacile sokuthi isinyathelo esiyisisekelo siphuthelwe ngesikhathi sokuhlanganiswa. Ngibone ama-valve amahle kakhulu elahlwa ngenxa yephutha lokufakwa elilula. Ukuthola uxhumano kahle kusukela ekuqaleni konga isikhathi esiningi, imali, kanye nezinkinga kamuva. Ake sibheke ukuthi singakwenza kanjani kahle njalo.

Uyivimba kanjani ivalvu yebhola ekuvuzeni emicu?

Ukuvuza okuqhubekayo okuvela ekuxhumekeni okusha kuyacasula. Usebenzise i-sealant, kodwa ukuvuza ngeke kume, okubambezela iphrojekthi yakho futhi kubangele umonakalo ongase ube khona emanzini.

Misa ukuvuza kwentambo ngokuhlola uhlelo lwakho lokuvala. Sebenzisa itheyiphu ye-PTFE esezingeni eliphezulu, uyisonge izikhathi ezingu-5-8 ohlangothini lwezintambo. Lokhu kuqinisekisa ukuthi itheyiphu igcwalisa kahle izikhala ngaphandle kokusunduzwa ngesikhathi sokuqinisa.

Yilapho ukuvuza okuningi kwentambo kuqala futhi kuphelela khona. Izintambo ezinciphile ku-PVC fitting aziklanyelwe ukudala uphawu ngokwazo. Umsebenzi wazo ukudala amandla omshini. Uphawu lwangempela ludalwa yi-isivali sentambo. Itheyiphu ye-PTFE, ebizwa nangokuthi i-Teflon tape, iyindlela evame kakhulu futhi ephumelelayo. Isihluthulelo sisekusetshenzisweni. Okokuqala, qiniseka ukuthi imicu yesilisa ihlanzekile futhi yomile ngokuphelele. Qala ukugoqa intambo yesibili kusukela ekugcineni. Lokhu kubalulekile ukuvimbela noma iyiphi i-tape ukuthi inganqunywa futhi icindezelwe epayipini, lapho ingavimba khona uhlelo. Kumelwe ugoqe i-tape ngokwewashi, ngendlela efanayo ozoqinisa ngayo i-fitting. Uma uyigoqa ngokwewashi, isenzo esilula sokugoqa i-fitting sizokwenza i-tape iqoqeke futhi ihlukane. Kuma-fittings ajwayelekile kusukela ku-1/2″ kuya ku-1″, ama-wraps agcwele angu-5 kuya kwangu-8 yinani elifanele. Donsa i-tape iqine njengoba ugoqa ukuze ingene ezigodini ze-thread. Kufanele usakwazi ukubona uhlaka lwemicu nge-tape.

Ungakuvimbela kanjani ukuvuza kwevalvu ngaphambi kokufakwa?

Usuzoxhuma ivalvu, kodwa izintambo zizwakala zingahambi kahle uma uzihlola. Ukungazinaki lo muzwa kungaholela ekuxhumekeni okukhuhla noma okuvuzayo kungakhathaliseki ukuthi wenzani.

Vimbela ukuvuza ngokuqinisekisa ukuthi izintambo zakho ziyahambisana ngaphambi kokuthi uthinte i-sealant. Iningi lomhlaba lisebenzisa i-BSPT, kuyilapho iNyakatho Melika isebenzisa i-NPT. Zibukeka zifana kodwa azihambisani nhlobo futhi zizohlala zivuza.

Lokhu ukuhlola okuyisisekelo kakhulu, futhi ukungayitholi kuqinisekisa ukwehluleka. Njengoba mina noMohommad sixoxile ngemakethe yaseBangladesh, uvame ukuthola ukuthi amazinga e-NPT kanye ne-BSPT ayatholakala. Azikwazi ukushintshaniswa.

• I-NPT (i-National Pipe Taper):Le ntambo ine-engeli engama-degree angu-60.
• I-BSPT (i-British Standard Pipe Taper):Le ntambo ine-engeli engama-degree angu-55.

Ukuphoqelela ukufakwa kwe-NPT yesilisa ku-valve ye-BSPT yesifazane kuyindlela yokudala inhlekelele. Ama-engeli ahlukene abangela ukuthi zibopheke futhi zinqamule intambo. Ukuxhumana kungase kuzwakale kuqinile, kodwa umane ulimaza ipulasitiki futhi udala indlela yokuvuza ejikelezayo okungekho nsimbi yokuvala engayilungisa. Ngaphambi kokufaka, bamba ukufakwa kwesilisa echwebeni le-valve yesifazane. Bheka izimpawu. Kwa-Pntek, simaka ngokucacile ama-valve ethu ngohlobo lwentambo. Uma kungekho izimpawu, zama ukuwahlanganisa ngesandla ukuze ujike kanye noma kabili. Uma uzizwa uphikiswa noma uqhaqhazela okukhulu, yeka ngokushesha. Cishe awafani nhlobo. Lokhu kuhlolwa okukodwa kwemizuzwana emihlanu kuvimbela okunye kokuhluleka kokufakwa okukhungathekisayo nokungagwenywa ngokuphelele.

Kungani ukuqinisa kakhulu kuyindlela embi kakhulu yokwelapha ivalvu evuzayo?

Ivalvu yakho iyaconsa, ngakho ubamba isikrufu esikhulu ukuze uyijike futhi. Uzwa ukuqhekeka okubukhali, futhi manje ukuconsa okuncane sekuyinto enkulu, engenakulungiswa.

Ukuqinisa kakhulu kuyimbangela yokuqala yokwehluleka kwevalvu ye-PVC. Isenzo se-wedge sentambo yesilisa enciphile sizohlukanisa imbobo ye-PVC yesifazane. I-torque efanele imane iqine ngesandla, bese kuba ukujika okungu-1-2 kuphela nge-wrench.

Kuyisimo semvelo: uma kukhona okuvuzayo, qinisa kakhulu.Amavalvu e-PVC, lokhu kuyinto engalungile ukuyenza. Ngokungafani nensimbi, i-PVC iyi-thermoplastic enokuqina okulinganiselwe. Uma uqinisa i-fitting enciphile (ikakhulukazi eyensimbi) echwebeni le-PVC lesifazane, ufaka i-wedge epulasitikini. Lokhu kudala ingcindezi enkulu yangaphandle, eyaziwa ngokuthi i-hoop stress. Akudingi mandla amaningi ukudlula amandla okudonsa e-PVC. Lokhu kubangela uqhekeko lwezinwele phansi kwezintambo, olube selusakazeka ngaphansi kwengcindezi yesistimu. Umthetho esiwufundisayo ulula futhi awupheli:Isandla Esiqinile Kanye Nokujika Okukodwa Kuya Kwababili.Yilokho kuphela. Sebenzisa isikrufu sentambo uma ungakwazi ukuze ugweme ukufaka ingcindezi emzimbeni wevalvu. Ukuvalwa kwenziwa yitheyiphu ye-PTFE ecindezela izikhala zentambo, hhayi ngokuchoboza ipulasitiki ukuze ifake. Uma ivuza ngemva kokuqinisa kahle, inkinga akuyona ukuqina. Kumelwe uhlehlise uxhumano bese uhlola ezinye izinkinga ezifana nezintambo ezingalingani noma itheyiphu enganele.

Yiziphi izinkinga ezintathu ezivame ukwenzeka ngenxa yokufakwa kabi?

Ubhekene nokwehluleka kwe-valve kwenye indawo yomsebenzi. Uhlala ushintsha izingxenye, kodwa izinkinga ziyaqhubeka, zikulahlekisela isikhathi, imali, futhi ziqeda ukwethembana kweklayenti lakho emsebenzini wakho.

Ukwehluleka kokufakwa okuvame kakhulu yilokhu: ama-port aqhekekile ngenxa yokuqina ngokweqile; ukuvuza kwentambo okuqhubekayo ngenxa yokusebenzisa izintambo ze-NPT/BSPT ezingalingani; kanye nomonakalo wangaphakathi wesivalo ngenxa yemfucumfucu engena evalvini ngesikhathi sokufakwa.

Ukuqonda lezi ziphazamiso ezintathu kukusiza ukuthi wakhe uhlu lokuhlola lwengqondo lwazo zonke izifakelo. Uma ivalvu enentambo yehluleka, cishe njalo iba yinye yalezi zimbangela.

Lokho kwehluleka kwesithathu kuvame ukunganakwa. Uma ivalvu yebhola iba nzima ukuyijika noma ivuza lapho ivaliwe, kungenzeka ukuthi ingxenye encane yemfucumfucu ihlanzwe yangena kuvalvu. Lapho ibhola livala kule nto eqinile, lingashaya unomphela ubuso bebhola lepulasitiki noma lonakalise izihlalo ze-PTFE ezithambile. Lokhu kudala indlela yokuvuza unomphela phakathi kwevalvu. Hlala ugcina amavalvu akho amasha emaphaketheni awo kuze kube yilapho efakwa, futhi njalo hlanza imigqa ngaphambi kokuyifaka. Imizuzwana embalwa yokunakekelwa kusengaphambili kuvimbela izinkinga ezinkulu kamuva.

Isiphetho

Vimbela ukuvuza kwentambo ngokufanisa izintambo, ukusebenzisa i-sealant ngendlela efanele, nokugwema ukuqinisa kakhulu. Ukufakwa kahle kuyimfihlo elula yokwenza intambo ihlale isikhathi eside, ihlale isikhathi eside futhi ingavuzi.I-valve yebhola ye-PVCuhlelo.