Amavalvu ebhola le-union langempela alinganiswa ngobukhulu bepayipi elijwayelekile (i-NPS) abaxhuma kulo, njenge-1/2″, 1″, noma 2″. Lobu bukhulu bubhekisela kububanzi bangaphakathi bepayipi elihambisanayo, hhayi ubukhulu obubonakalayo bevalvu, okuqinisekisa ukulingana okuphelele.

Lokhu kulinganisa kubonakala kulula, kodwa yilapho kwenzeka khona amaphutha amaningi. Umlingani wami e-Indonesia, uBudi, uyakwazi kahle lokhu. Amakhasimende akhe, kusukela kosonkontileka abakhulu kuya kubathengisi bendawo, abakwazi ukukhokhela ukungalingani endaweni. I-oda elilodwa elingalungile lingaphazamisa lonke uchungechunge lokuhlinzeka kanye nesikhathi sephrojekthi. Yingakho sihlala sigxila ekucaciseni. Ake sihlukanise imibuzo evame kakhulu ngalezi valve ezibalulekile ukuqinisekisa ukuthi yonke i-oda ilungile kusukela ekuqaleni.

Iyini i-valve yebhola yomanyano yangempela?

Ivalvu iyahluleka, kodwa inamathiselwe unomphela entanjeni. Manje kufanele ukhiphe amanzi ohlelweni lonke bese usika ingxenye yonke yepayipi ukuze nje kulungiswe kalula.

I-valve yebhola le-union yangempela iyisakhiwo esinezingcezu ezintathu. Ine-body ephakathi engasuswa kalula ukuze ilungiswe noma ishintshwe ngokukhumula amantongomane amabili “e-union”, ngaphandle kokunquma ipayipi elixhunyiwe.

Ake sichaze ukuthi kungani lo mklamo ubaluleke kangaka kochwepheshe. Ingxenye ethi “ubumbano lweqiniso” ibhekisela ngqo ekuxhumekeni kuzo zombili izinhlangothi zevalvu. Ngokungafani nendinganiso ejwayelekileivalvu encaneokufakwe umxube we-solvent unomphela emgqeni,i-valve yomanyano yangempelainezingxenye ezintathu ezihlukene ezingahlukaniswa.

Izingxenye Eziyinhloko

• Izingcezu ezimbili zomsila:Lezi yiziphetho ezinamathele unomphela emapayipini, ngokuvamile ngokushisela i-solvent ye-PVC. Zakha uxhumano oluzinzile nohlelo lwakho.
• Umzimba Owodwa Ophakathi:Lona umgogodla wevalvu. Uqukethe indlela yebhola, isiqu, isibambo, kanye nezivalo. Uhlala kahle phakathi kwezingcezu ezimbili zangemuva.
• Ama-Union Nuts Amabili:La mantongomane amakhulu, anezintambo ayimilingo. Ashelela phezu kwezingcezu zangemuva bese egoqa umzimba ophakathi, edonsa konke ndawonye futhi edala ukuqina,uphawu olungangeni manzingama-O-rings.

Lokhuumklamo we-modularishintsha umdlalo wokulungisa. Umane ukhulule ama-nuts, bese umzimba wonke we-valve uphakama ngokushesha. Lesi sici siyinani eliyinhloko esilinikezayo kwa-Pntek—umklamo ohlakaniphile osindisa abasebenzi, imali, kanye nesikhathi sokungasebenzi kwesistimu.

Ungasho kanjani ukuthi ivalvu yebhola ingakanani?

Unevalvu esandleni sakho, kodwa azikho izimpawu ezicacile. Udinga uku-oda enye esikhundleni sayo, kodwa ukuqagela ukuthi usayizi uyindlela yokwenza amaphutha abizayo kanye nokubambezeleka kwephrojekthi.

Usayizi wevalvu yebhola cishe njalo ufakwa noma uphrinte ngqo emzimbeni wevalvu. Bheka inombolo elandelwa ngu-“intshi” (“) noma “DN” (Ububanzi Obujwayelekile) ukuze uthole osayizi be-metric. Le nombolo ihambisana nosayizi wepayipi ojwayelekile ohambisana nayo.

Usayizi wamavalvu usekelwe ohlelweni olubizwa ngokuthiUsayizi Wepayipi Elijwayelekile (i-NPS)Lokhu kungadida ekuqaleni ngoba inombolo akuyona isilinganiso esiqondile sanoma iyiphi ingxenye ethile yevalvu uqobo. Kuyireferensi ejwayelekile.

Ukuqonda Izimpawu

• Usayizi Wepayipi Elijwayelekile (i-NPS):Kuma-valve e-PVC, uzobona osayizi abavamile njengo-1/2″, 3/4″, 1″, 1 1/2″, 2″, njalo njalo. Lokhu kukutshela ukuthi yakhelwe ukulingana epayipini elinosayizi ofanayo. Ngamafuphi, ivalvu engu-1″ ifanela ipayipi elingu-1″. Iqondile kanjalo.
• Ububanzi begama (i-DN):Ezimakethe ezisebenzisa amazinga e-metric, uzovame ukubona izimpawu ze-DN esikhundleni salokho. Isibonelo, i-DN 25 iyi-metric elingana ne-NPS 1″. Kumane kuyindlela ehlukile yokuqamba amagama yobukhulu obufanayo bepayipi elijwayelekile embonini.

Uma uhlola ivalvu, hlola isibambo noma umzimba oyinhloko. Usayizi uvame ukubunjwa ube yipulasitiki. Uma kungekho zimpawu nhlobo, okuwukuphela kwendlela eqinisekile ukukala ububanzi bangaphakathi besokhethi yevalvu, okuyilapho ipayipi liya khona. Lokhu kulinganisa kuzohambisana kahle nobubanzi bangaphandle bepayipi elifanele elihloselwe lona.

Uyini umehluko phakathi kwamavalvu ebhola le-single union namavalvu ebhola le-double union?

Uthenge ivalvu “yenhlangano” ulindele ukususwa kalula. Kodwa uma uzama ukuyilungisa, uthola ukuthi uhlangothi olulodwa kuphela oluvuleka, okuphoqa ukuthi ugobe futhi ucindezele ipayipi ukuze ulikhiphe.

Ivalvu eyodwa ye-union ine-union nut eyodwa, evumela ukunqamuka ohlangothini olulodwa lwepayipi. Ivalvu yebhola ye-union ephindwe kabili (noma i-union yangempela) inama-union nuts amabili, evumela umzimba ukuthi ususwe ngokuphelele ngaphandle kokucindezela ipayipi.

Lo mehluko ubaluleke kakhulu ekusebenzeni kahle kwangempela kanye nomsebenzi wobungcweti. Nakuba ivalvu eyodwa yokuhlanganisa ingcono kancane kunevalvu ejwayelekile ehlanganisiwe, ayinikezi ukuguquguquka okugcwele okudingekayo ekunakekelweni kwesikhathi eside.

Kungani i-Double Union iyindinganiso yobungcweti

• Inyunyana Eyodwa:Nge-union nut eyodwa, uhlangothi olulodwa lwe-valve luqiniswa unomphela ekugcineni kwepayipi. Ukuze uyisuse, ukhulula i-nut eyodwa, kodwa-ke kufanele uyidonse noma uyigobe ipayipi ngokomzimba ukuze i-valve iphume. Lokhu kubeka ingcindezi enkulu kwezinye izinto ezifakiwe futhi kungabangela ukuvuza okusha kamuva. Kuyisixazululo esingaphelele esingadala izinkinga ezengeziwe.
• Ubumbano Oluphindwe Kabili (Ubumbano Lweqiniso):Lena indinganiso yobungcweti nalokho esikukhiqizayo kwa-Pntek. Ngama-union nuts amabili, kokubili ukuxhumeka kwamapayipi kungakhululeka ngokuzimela. Umzimba we-valve ungaphakanyiswa uqonde phezulu nangaphandle komugqa ngaphandle kokucindezeleka kumapayipi. Lokhu kubalulekile uma i-valve ifakiwe endaweni eqinile noma ixhunywe emishinini ebucayi njengepompo noma isihlungi.

Ungakanani usayizi ojwayelekile wevalvu yebhola egcwele ibhore?

Ufake ivalvu, kodwa manje umfutho wamanzi ohlelweni ubonakala uphansi. Uyabona ukuthi imbobo engaphakathi kwevalvu incane kakhulu kunepayipi, okudala imbobo evimbela ukugeleza kwamanzi.

Ku-valve yebhola egcwele imbobo (noma egcwele imbobo), ubukhulu bembobo ebholeni benzelwe ukulingana nobubanzi bangaphakathi bepayipi. Ngakho-ke, i-valve egcwele imbobo engu-1″ inombobo nayo engu-1″ ububanzi, okuqinisekisa ukuthi akukho ukuvinjelwa kokugeleza kwamanzi.

Igama "isimbozo esigcwele"Ibhekisela ekwakhiweni kwangaphakathi nokusebenza kwevalvu, hhayi usayizi wayo wokuxhumeka kwangaphandle. Kuyisici esibalulekile ekusebenzeni kahle kwezinhlelo zokusebenza eziningi.

I-Full Bore vs. I-Standard Port

• I-Full Bore (Imbobo Egcwele):Imbobo ebholeni ilingana nobubanzi bangaphakathi (ID) bepayipi elixhunywe kuyo. Ku-valve engu-2″, imbobo nayo ingu-2″. Lo mklamo udala indlela ebushelelezi, engavimbeki nhlobo yoketshezi. Uma i-valve ivuliwe, kufana nokuthi ayikho ngisho nalapho. Lokhu kubalulekile ezinhlelweni lapho udinga khona ukwandisa ukugeleza nokunciphisa ukwehla kwengcindezi, njengemigqa yamanzi eyinhloko, izindawo zokungenisa amanzi, noma izinhlelo zokukhipha amanzi.
• Imbobo Ejwayelekile (Imbobo Encishisiwe):Kulo mklamo, imbobo edlula ebholeni incane ngosayizi owodwa kunosayizi wepayipi. Ivalvu ejwayelekile yembobo engu-1″ ingaba nomgodi ongu-3/4″. Lo mkhawulo omncane uyamukeleka ezinhlotsheni eziningi futhi wenza ivalvu ngokwayo ibe ncane, ilula, futhi ingabizi kakhulu ukuyikhiqiza.

Kwa-Pntek, ama-valve ethu ebhola aqinile agcwele i-bore. Sikholelwa ekuhlinzekeni ngezixazululo ezithuthukisa ukusebenza kohlelo, hhayi eziluvimbelayo.

Isiphetho

Ubukhulu bevalvu yebhola yomanyano lwangempela buhambisana nepayipi elihambisanayo. Ukukhetha umanyano oluphindwe kabili, umklamo webhore eligcwele kuqinisekisa ukulungiswa okulula kanye nokungavinjelwa kokugeleza kwesistimu ethembekile neyobungcweti.