Ukukhetha uhlobo olungalungile lwentambo ye-PVC fittings yakho kuholela ekuvuvukeni okukhungathekisayo. Lokhu kuvuza kubangela umonakalo wamanzi, ukubambezeleka kwephrojekthi, futhi kukuphoqe ukuthi uphinde wenze umsebenzi, okukubiza isikhathi nemali.

I-NPT kanye ne-BSPT yizindinganiso ezimbili ezihlukene ezingahambisani. I-NPT iyindinganiso yaseMelika ene-engeli yentambo engu-60°. I-BSPT iyindinganiso yaseBrithani ene-engeli yentambo engu-55°. Kumelwe ufanise uhlobo lwentambo nepayipi lakho.

Lesi yisihloko engixoxa ngaso njalo nomlingani wami uBudi e-Indonesia. Kwezohwebo zomhlaba wonke, imininingwane emincane efanaamazinga entambokungenza umehluko omkhulu. Imakethe yaseNingizimu-mpumalanga ye-Asia ngezinye izikhathi isebenzisa indinganiso ye-ANSI yaseMelika, ehlanganisa i-NPT, ikakhulukazi kumaphrojekthi athile. Kodwa-ke, izifunda eziningi zikhethaI-BSPTUkuqonda umehluko oyinhloko phakathi kwalezi ezimbili yisinyathelo sokuqala soku-oda izingxenye ezifanele nokuqinisekisa ukuthi amakhasimende akho angakha izinhlelo eziqinile, ezingavuzi. Ake sibheke ukuthi yini ehlukanisa lezi zinto.

Uyini umehluko wangempela phakathi kwezintambo ze-BSPT ne-NPT?

Izintambo ezikufinyezo ezimbili zibukeka zifana kakhulu. Ukwenza iphutha ngokucabanga ukuthi ziyafana kungasusa izintambo futhi konakalise ufinyezo, kuphoqele ukuthi kufakwe okunye esikhundleni sazo.

Umehluko oyinhloko yi-engeli yentambo kanye ne-pitch. Imicu ye-NPT ine-engeli engama-degree angu-60, kuyilapho imicu ye-BSPT ine-engeli engama-degree angu-55. Lo mehluko omncane ubavimbela ekwakheni uphawu olufanele noluvikelekile ndawonye.

Uma uqala ukubona, ungase ungawuboni umehluko. Kodwa ubunjiniyela obungemuva kwabo buhlukile ngokuphelele. Kuncike emaphuzwini amabili ayinhloko: ukuma kwemicu ngayinye kanye nendlela ezivaleka ngayo.I-NPT (i-National Pipe Taper)ejwayelekile isebenzisa imicu eneziqongo nezigodi ezisicaba.I-BSPT (i-British Standard Pipe Taper)Imicu inephrofayili eyindilinga, i-Whitworth. Umehluko obaluleke kakhulu yi-engeli. Lokhu kungafani kwe-engeli kusho ukuthi uma uzama ukufaka i-NPT fitting ku-BSPT fitting, yizona kanye izihloko zemicu ezizothintana. Lokhu kudala uxhumano olubuthakathaka oluzovuza ngaphansi kwengcindezi futhi lungasuswa kalula. Aziklanyelwe nje ukusebenzisana.

I-NPT vs. BSPT: Umehluko Obalulekile Wezobuchwepheshe

Isici	I-NPT (Izinga laseMelika)	I-BSPT (Indinganiso YaseBrithani)
I-engela Yomcu	Amadigri angu-60	Amadigri angu-55
Iphrofayela Yochungechunge	Iziqongo nezigodi ezisicaba	Iziqongo nezigodi eziyindilinga
Isivalo Esiyinhloko	Imicu ehlanganisa ndawonye (i-taper)	Isivali ezintanjeni
Isifunda Esivamile	i-America esenyakatho	IYurophu, i-Asia, i-Australia, Umhlaba jikelele

Ingabe i-NPT noma i-BSP iyindinganiso engcono yentambo?

Ufuna ukugcina uhlobo oluhle kakhulu noluwusizo kakhulu lwezihlanganisi ezinezintambo. Ukugcina izinga elingalungile emakethe yakho kuzoholela ekuthengisweni kwezinto ezihamba kancane kanye namakhasimende angajabuli.

Akukho okujwayelekile "okungcono" ngokwezobuchwepheshe kunenye; kumane kuhlukile. Ukukhetha okungcono kakhulu yileyo ejwayelekile esifundeni sakho sendawo futhi ehambisana nemishini esetshenziswa amakhasimende akho.

Lokhu kuyindaba yendawo, hhayi ikhwalithi. I-NPT iyindinganiso evelele e-United States naseCanada. Uma usebenza kuphrojekthi eklanywe yinkampani yaseMelika noma usebenzisa imishini yaseMelika, cishe uzodingaUkufakwa kwe-NPTNgakolunye uhlangothi, i-BSP iyindinganiso eyamukelwe kwezinye izingxenye eziningi zomhlaba, okuhlanganisa iYurophu, i-UK, i-Asia, i-Australia, kanye neNingizimu Afrika. Emakethe yaseBudi eNingizimu-mpumalanga ye-Asia, ingaxutshwa. Ngiyazi ukuthi amaphrojekthi amaningi endawo kanye nawaseYurophu athonywe yiwo azofuna i-BSPT. Kodwa-ke, amaphrojekthi anotshalomali noma ubunjiniyela baseMelika avame ukucacisa amazinga e-ANSI, okusho i-NPT. Ivalvu "engcono kakhulu" yileyo efaka kahle ipayipi lekhasimende lakho. Yingakho kubaluleke kakhulu ukubuza nokuqinisekisa ukuthi iyiphi indinganiso edingekayo kuphrojekthi ngayinye ethile.

Ingabe izintambo ze-NPT zivamile ezifakweni ze-PVC?

U-oda ama-valve ebhola le-PVC futhi udinga ukukhetha uhlobo lwentambo. Udinga ukwazi ukuthi izinsimbi zepulasitiki zingenziwa yini ngalezi zintambo zepayipi zensimbi ezivamile.

Yebo, ukufakwa kwe-PVC kuvame kakhulu ukukhiqizwa ngezintambo ze-NPT kanye ne-BSP. Lokhu kuvumela izinhlelo zamapayipi epulasitiki ukuthi zixhumane kalula namapayipi ensimbi anezintambo, amaphampu, kanye nezinye izingxenye zamapayipi ezijwayelekile.

Kwa-Pntek, sakha uhla olukhulu lwezihlanganisi ze-PVC ezinezintambo ze-NPT kanye ne-BSP ukuze sikhonze ozakwethu bomhlaba wonke. Ukuxubha kuyindlela ejwayelekile yokwakha uxhumano olungahlanganiswa futhi luhlukaniswe. Kodwa-ke, kubalulekile ukucabangela amandla epulasitiki. Inqubo yokusika imicu isusa izinto futhi idale iphuzu lokucindezeleka. Ngenxa yalesi sizathu, sihlala sincoma ukusebenzisa udonga olujiyileI-PVC yeShejuli 80ngobaukuxhumeka okunezintambo, ikakhulukazi ezinhlelweni ezinengcindezi ephezulu noma ukucindezeleka komshini. Nakuba ungakwazi ukufaka intambo kumapayipi kanye nokufakwa kwe-Schedule 40, amandla azo okuphatha ingcindezi ancishiswa kakhulu. Ukusebenzisa intambo ye-PVC eyenziwe ngefektri kuhlale kuthembekile kunokusika izintambo zibe yipayipi elivamile wena.

Ungakwazi yini ukuxhumanisa izintambo ze-BSPT ne-NPT ndawonye?

Une-NPT fitting yabesifazane kanye nepayipi le-BSPT labesilisa ensimini. Kubonakala sengathi lingase lingene, futhi uyalingeka ukuba uliphoqe ukuthi liqede umsebenzi.

Cha, akumelwe neze uxhume imicu ye-BSPT ne-NPT ngqo. Ama-engeli angalingani azokwenza ukuthi abophe, awele intambo, futhi alimaze izinto ezifakiwe. Lokhu kudala ijoyinti elibuthakathaka eliqinisekisiwe ukuthi lizovuza.

Ukuzama ukuphoqelela lezi zindinganiso ezimbili ndawonye kuyindlela yokwehluleka. Ngenxa yokuthi ama-engeli ne-pitch yentambo kuhlukile, azikwazi ukuhlanganisa kahle. Okwenzekayo inqubo ebizwa ngokuthi “ukuxubha ngentambo"," lapho ingxenye ephezulu yentambo eyodwa inqamula khona empandeni yenye esikhundleni sokuhlala kahle. Lokhu kuzolimaza unomphela izintambo zesilisa nezesifazane. Ngisho noma usebenzisa inani elikhulu letheyiphu yokuvala intambo, ngeke igcwalise izikhala ezidalwe yi-geometry engalingani. Ukuxhumana kuzovuza ngokushesha nje lapho uhlelo lucindezelwa. Indlela ewukuphela kwayo efanele neyobungcweti yokujoyina i-Uhlelo lwe-BSPT luye ohlelweni lwe-NPTKusetshenziswa i-adapter fitting ekhethekile. Lawa ma-adapter enziwe ngentambo efanele yabesifazane nabesilisa emaphethelweni ahlukene ukuze kudalwe ushintsho oluphephile nolungavuzi.

Isiphetho

I-NPT ne-BSPT ziyizindinganiso ezihlukile, ezingahambisani. Ukukhetha okulungile kunqunywa indawo yephrojekthi yakho kanye nemininingwane yayo. Qinisekisa njalo izinga elidingekayo ukuqinisekisa ukuxhumana okuphephile, okuthembekile, nokungenawo amanzi ezicini zakho ze-PVC.