Kufuneka u-odole iivalvu zebhola kwiprojekthi ethile, kodwa awuqinisekanga ngobungakanani obuchanekileyo. Uku-odola ubungakanani obungalunganga kuthetha ukulibaziseka kunye nokubuyiselwa kwemali eninzi, intloko ebuhlungu engafunekiyo kumphathi wokuthenga.

Ubungakanani beevalvu zebhola busekelwe kubungakanani bepayipi abanxibelelana nayo. Zihlala ziqala kubukhulu obuncinci obuyi-1/2 intshi yokusetyenziswa ekhaya ukuya kubukhulu obukhulu obuyi-12 intshi yokusetyenziswa kwimizi-mveliso, zilandela imigangatho yamazwe ngamazwe efana ne-NPS kunye ne-DN.

Ukubeka ubungakanani obuchanekileyo yeyona nyathelo libalulekileyo eku-odoleni. Kubonakala kulula, kodwa ngemigangatho eyahlukeneyo esetyenziswa kwihlabathi liphela, kunokudida. Ndisebenza namaqabane afana noBudi e-Indonesia, kwaye kufuneka sicacelwe ngokupheleleyo malunga nobungakanani ukuqinisekisa ukuba abathengi bakhe bafumana kanye into abayidingayo kwiiprojekthi zabo. Ukusebenzisa ubungakanani obuchanekileyo kuqinisekisa ukulingana okufanelekileyo, uphawu oluthembekileyo, kunye nenkqubo esebenza njengoko iyilwe. Oku akupheleli nje kwinxalenye; kumalunga nempumelelo yofakelo lonke.

Zingakanani ubungakanani iivalvu zebhola eziza?

Ujonge ikhathalogu yababoneleli kwaye uluhlu lweesayizi zeevalvu lubonakala lungenasiphelo. Uyazibuza ukuba zeziphi iisayizi ezilungele imisebenzi eqhelekileyo kunye nezo zenzelwe iiprojekthi zemizi-mveliso ezikhethekileyo.

Iivalvu zebhola ziyafumaneka ngobukhulu obahlukeneyo ukuze zilingane phantse nayo yonke imibhobho eqhelekileyo. Kwiinkqubo ezininzi zePVC, oku kudla ngokuqala kwi-1/2 intshi (DN15) ukuya kwi-12 intshi (DN300).

Uluhlu olubanzi lobukhulu luthetha ukuba kukhoivalvu yebholaphantse kuyo nayiphi na imisebenzi, ukusuka kwi-impompo yegadiuqhagamshelo kwisikhululo samanzi esikhulu. Isitshixo kukuqonda ukuba zeziphi iisayizi ezisetyenziselwa ezo zicelo. Njengomvelisi, sigcina ubungakanani obuqhelekileyo ukuze amaqabane ethu akwazi ukufumana oko akufunayo ngaphandle kwexesha elide lokufumana imali. Kwimarike efana ne-Indonesia, ukuba nesitokhwe sezindlu zokuhlala kunyeubungakanani bokunkcenkceshelaUkusuka kwi-1/2″ ukuya kwi-4″ kubalulekile ukuba uBudi akhonze abathengi bakhe ngokufanelekileyo. Oku kuqinisekisa ukuba umakhi unokuhlala efumana ivalvu ayidingayo kwimisebenzi yemihla ngemihla yokulungisa imibhobho kunye nokwakha.

Iindidi zobungakanani kunye nezicelo

Uluhlu Lobukhulu (Iintshi)	Uluhlu lobungakanani (DN)	Amatyala Okusetyenziswa Okuqhelekileyo	Izicelo zemizekelo
Indawo yokuhlala encinci	1/2″ – 1″	DN15 – DN25	Ukuvalwa kwezinto ngazinye, imibhobho yamanzi yasekhaya, iimpompo zegadi.
Urhwebo Oluphakathi	1-1/4″ – 4″	DN32 – DN100	Ukwakha imigca ephambili, iinkqubo zokunkcenkceshela zorhwebo, amadama okudada.
Imizi-mveliso emikhulu	6″ nangaphezulu	DN150 nangaphezulu	Iinkqubo zamanzi zikamasipala, imizila yenkqubo yefektri, ezolimo.

Zithini iivalvu ezisemgangathweni?

Uva amagama afana ne-NPS, DN, Imperial, kunye neMetric. Oku kunokwenza uku-odola kwamanye amazwe kube yinto edidayo kwaye kudale umngcipheko wokufumana inxalenye engafanelaniyo nemibhobho yakho.

Ubungakanani beevalvu eziqhelekileyo buchazwa yinkqubo ye-NPS (Nominal Pipe Size), esebenzisa ii-intshi, okanye inkqubo ye-DN (Diameter Nominal), esebenzisa iimilimitha. Zombini iinkqubo ziqinisekisa ukuhambelana kwehlabathi phakathi kwemibhobho kunye nezinto ezifakelwayo.

Le migangatho lulwimi olusetyenziswa kushishino lwemibhobho. Yenzelwe ukuba ivalvu eyenziwe kwelinye ilizwe ifaneleke kakuhle kumbhobho owenziwe kwelinye. Inani lobungakanani "liyi-nominal," oko kuthetha ukuba ligama lobungakanani, hayi umlinganiselo ochanekileyo. Ivalvu eyi-intshi ezimbini ayinawo umngxuma ongama-intshi ayi-2,000 ngqo. Yenzelwe ukulingana nombhobho oyi-intshi ezimbini. Ukuqonda zombiniI-NPSkwayeDNKubalulekile kuye nabani na obandakanyeka kurhwebo lwamazwe ngamazwe, njengam kunye namaqabane am. Isusa onke amathandabuzo kwaye iqinisekisa ukuba iindawo ziya kusebenza kunye ngaphandle kokuphazamiseka.

Ukuqonda iMigangatho ye-NPS kunye ne-DN

Nantsi itshathi elula yokuguqula ubungakanani obuqhelekileyo. Ukuba nale nto esandleni kwenza kube lula ukutshintsha phakathi kwezi nkqubo zimbini kwaye kuphephe naluphi na ukudideka.

I-NPS (Iintshi)	I-DN (iiMilimitha)
1/2″	DN15
3/4″	DN20
1″	DN25
1-1/2″	DN40
2″	DN50
3″	DN80
4″	DN100

Ungayibona njani ubungakanani bevalvu?

Ukwindawo yokusebenzela kwaye kufuneka utshintshe ivalvu endala. Ivalvu ingcolile, kwaye akukho phakheji okanye amaphepha, ngoko awuqinisekanga ukuba uza kuyiodola ngobukhulu obunjani.

Ukuze ubone ubungakanani bevalvu, jonga umzimba wevalvu ukuba akukho zimpawu zibhalwe okanye ziprintiweyo. Uza kubona ubungakanani be-intshi (umz., “2″) okanye ixabiso le-DN (umz., “DN50″).

Abavelisi phantse bahlala bebeka uphawu lobungakanani ngqo kwimveliso. Le yeyona ndlela ikhawulezayo nethembekileyo yokuyibona. Jonga ngononophelo umzimba oyintloko wevalvu. Ngamanye amaxesha uphawu lophawu okanye umlinganiselo woxinzelelo ubonakala ngakumbi, kodwa uphawu lobungakanani luya kubakho.iivalvu zebhola zomanyano lokwenyani, ungafumana nobukhulu obuphawulwe kwii-union nuts. Wakuba ufumene eli nani, unokuqiniseka ngokupheleleyo ukuba uza ku-odola indawo echanekileyo. Olu vavanyo lulula lugcina ixesha elininzi kwaye luthintele ukuphoxeka kokufumana indawo engafanelekanga.

Okufanele Ukwenze Ukuba Akukho Zimpawu

Ukuba ivalvu indala kakhulu okanye igugile kwaye awukwazi ukufumana naziphi na iimpawu, uneendlela ezimbalwa onokukhetha kuzo. Musa ukulinganisa nje umphandle wevalvu, kuba oku kunokukukhohlisa.

1. Jonga iPipe:Le yeyona ndlela ilungileyo. Umbhobho ivalvu eqhagamshelwe kuwo uya kuba nobukhulu bawo obuprintiweyo kubude bawo. Khangela iimpawu ezinje ngo-“PVC Schedule 40 2 INCH” okanye “UPVC PN10 DN50″. Ubungakanani bevalvu buya kuhambelana nobukhulu bombhobho.
2. Linganisa i-Inside Port:Linganisa ngononophelo ububanzi bangaphakathi bomngxuma apho amanzi adlula khona. Olu linganiso luya kusondela kakhulu kubukhulu obuqhelekileyo. Umzekelo, ivalvu ye-2-intshi iya kuba nobubanzi bangaphakathi obumalunga ne-2 intshi.
3. Thelekisa neValve eyaziwayo:Ukuba unezinye iivalvu zobukhulu obaziwayo, ungenza uthelekiso oluthe ngqo lomzimba.

Ithetha ukuthini i-DN50 kwivalvu?

Uphonononga iphepha leenkcukacha zobugcisa elivela kumthengisi waseYurophu. Ubona "DN50" kwaye kufuneka wazi ukuba loluphi ubungakanani ngokomlinganiselo oza kuqonda iqela lakho lendawo.

I-DN50 imele “i-Diameter Nominal 50 millimeters”. Yimilinganiselo ye-international metric standard size elingana nobukhulu be-2-intshi (NPS) obusetyenziswa eMelika nakwezinye iindawo.

Inkqubo ye-DN idala umgangatho oqhelekileyo kuwo wonke umntu.Ububanzi obuqhelekileyo"Kuthetha nje ukuba ligama lobukhulu, hayi umlinganiselo ongqongqo. Ngokusebenzisa i-DN, umphathi weprojekthi e-Indonesia onjengoBudi unoku-odola kumvelisi onjengam eTshayina, kwaye sobabini siyazi kakuhle into esithetha ngayo. Isusa ukudideka phakathi kweenkqubo ze-metric kunye ne-Imperial kwaye sisiseko sokuhambelana kwehlabathi kushishino lwethu. Xa ubona i-DN, uyazi ukuba usebenzisa i-Umgangatho we-ISOOku kuqinisekisa ukuba ivalvu ye-DN50 iya kuhambelana nayo nayiphi na ipayipi ye-DN50 okanye isixhobo sayo, kungakhathaliseki ukuba yenziwe phi na emhlabeni.

Ubungakanani obuqhelekileyo be-DN kunye nee-intshi ezilinganayo zabo

Ukuqonda olu lwalamano kubalulekile ekusebenzeni neemveliso zamazwe ngamazwe.

Ubungakanani be-DN	Intsingiselo Ethe Ngqo	I-intshi Elinganayo Eqhelekileyo (i-NPS)
DN15	Ububanzi obuqhelekileyo yi-15 mm	1/2″
DN25	Ububanzi obuqhelekileyo 25 mm	1″
DN50	Ububanzi obuqhelekileyo 50 mm	2″
DN100	Ububanzi obuqhelekileyo yi-100 mm	4″

Olu lungelelwaniso yilo olusivumela ukuba sakhe iinkqubo zamanzi ezinokuthenjwa kwihlabathi liphela.

Isiphelo

Ukuqondaubungakanani bevalvu yebholakubalulekile eku-odoleni iindawo ezifanelekileyo. Ngokwazi iinkqubo ezisemgangathweni ezifanaI-NPS kunye ne-DNkwaye indlela yokufumana ubungakanani kwivalvu, uya kuziphepha iimpazamo ezibizayo.