U-ode iloli egcwele amavalvu ephrojekthi enkulu. Kodwa uma efika, izintambo azihambisani namapayipi akho, okubangela ukubambezeleka okukhulu kanye nokubuyiselwa kwemali okubizayo.

Izinhlobo ezimbili eziyinhloko zezintambo ze-ball valve yi-NPT (National Pipe Taper) esetshenziswa eNyakatho Melika, kanye ne-BSP (British Standard Pipe), evame kakhulu yonke indawo. Ukwazi ukuthi iyiphi indawo oyisebenzisayo kuyisinyathelo sokuqala sokuxhuma okungavuzi.

Ukuthola uhlobo lwentambo ngendlela efanele kungenye yezingxenye eziyisisekelo, kodwa ezibalulekile, zokuthola ulwazi. Ngake ngasebenza noBudi, umphathi wokuthenga e-Indonesia, owa-oda ngephutha isitsha sama-valve anezintambo ze-NPT esikhundleni se-Izinga le-BSPisetshenziswa ezweni lakubo. Kwakuyiphutha elilula elabangela ikhanda elikhulu. Izintambo zibukeka zifana, kodwa azihambisani futhi zizovuza. Ngaphandle kwezintambo, kunezinye izinhlobo zokuxhuma njengesokhethi ne-flange ezixazulula izinkinga ezahlukene. Ake siqiniseke ukuthi uyakwazi ukuzihlukanisa zonke.

Kusho ukuthini i-NPT ku-valve yebhola?

Ubona i-“NPT” ephepheni lemininingwane bese ucabanga ukuthi iwuchungechunge olujwayelekile nje. Ukungayinaki le mininingwane kungaholela ekuxhumekeni okubonakala kuqinile kodwa kuvuza ngaphansi kwengcindezi.

Izitendi ze-NPTnge-National Pipe Taper. Igama eliyinhloko lithi “taper.” Imicu igobile kancane, ngakho-ke iyahlangana njengoba uyiqinisa ukuze wakhe uphawu oluqinile lwemishini.

Umklamo onciphile uyimfihlo yamandla okuvala e-NPT. Njengoba ipayipi le-NPT elinomucu wesilisa lifaka i-NPT yesifazane, ububanzi bezingxenye zombili buyashintsha. Lokhu kuhlangana kokuphazamiseka kuphula imicu ndawonye, ​​kwakha uphawu oluyinhloko. Kodwa-ke, lokhu kuguqulwa kwensimbi phezu kwensimbi noma ipulasitiki phezu kwepulasitiki akuphelele. Kuhlala kusele izikhala ezincane ezijikelezayo. Yingakho kufanele uhlale usebenzisa i-thread sealant, njenge-PTFE tape noma i-pipe dope, enokuxhumeka kwe-NPT. I-sealant igcwalisa lezi zikhala ezincane kakhulu ukuze uxhumano lungavuzi ngempela. Leli zinga livamile e-United States naseCanada. Kubathengi bamazwe ngamazwe abanjengoBudi, kubalulekile ukucacisa "i-NPT" kuphela uma beqiniseka ukuthi iphrojekthi yabo iyakudinga; ngaphandle kwalokho, badinga indinganiso ye-BSP evamile e-Asia naseYurophu.

Yiziphi izinhlobo ezahlukene zokuxhumeka kwama-valve?

Udinga ukuxhuma ivalvu epayipini. Kodwa ubona izinketho “ezinomucu,” “isokhethi,” kanye “ne-flanged,” futhi awuqiniseki ukuthi yikuphi okulungele umsebenzi wakho.

Izinhlobo ezintathu eziyinhloko zokuxhumeka kwama-valve zifakwe intambo yamapayipi anesikulufu, isokhethi lamapayipi e-PVC anamathiselwe, kanye ne-flange yezinhlelo zamapayipi amakhulu, anamabholidi. Ngayinye yenzelwe izinto ezihlukile zamapayipi, usayizi, kanye nesidingo sokulungiswa.

Ukukhetha uhlobo lokuxhuma olufanele kubaluleke njengokukhetha ivalvu efanele. Azikwazi ukushintshaniswa. Ngayinye isebenzela injongo ehlukile futhi ifanele ukusetshenziswa okuhlukile. Zicabange njengezindlela ezahlukene zokuxhumanisa umgwaqo.Ukuxhumeka okunezintambozifana nendawo ejwayelekile yokuhlangana,ukuxhumeka kwesokhethikufana nokuhlangana okuhlala njalo lapho imigwaqo emibili iba yinye, kanti ukuxhumeka okunezingqimba kufana nesigaba sebhuloho eliguquguqukayo elingashintshwa kalula. Ngihlala ngiluleka ithimba likaBudi ukuthi liqondise amakhasimende alo ngokusekelwe ekusaseni lesistimu yabo. Ingabe umugqa wokunisela ohlala njalo ongasoze washintshwa? Sebenzisa i-socket weld. Ingabe ukuxhumeka epompo okungase kudingeke kushintshwe? Sebenzisa ivalvu enentambo noma e-flanged ukuze ususwe kalula.

Izinhlobo Zokuxhuma Eziyinhloko Zevalvu

Yiziphi izinhlobo ezine zamavalvu ebhola?

Uzwa abantu bekhuluma ngamavalvu “engxenye eyodwa,” “amabili,” noma “athathu”. Lokhu kuzwakala kudida futhi ukhathazekile ukuthi uthenga okungalungile ngokwesabelomali sakho nezidingo zakho zokulungisa.

Amavalvu ebhola avame ukuhlukaniswa ngokwesakhiwo somzimba wawo: Ucezu Olulodwa (noma Oluncane), Ucezu Olubili, kanye Nocezu Oluthathu. Le miklamo inquma izindleko zevalvu nokuthi ingalungiswa yini.

Nakuba abantu ngezinye izikhathi bekhuluma ngezinhlobo ezine, izitayela ezintathu eziyinhloko zokwakha zimboza cishe zonke izinhlelo zokusebenza.Ivalvu “Yesiqeshana Esisodwa”, evame ukubizwa ngokuthi i-Compact valve, inomzimba owenziwe ngepulasitiki eyodwa ebunjiwe. Ibhola livalwe ngaphakathi, ngakho-ke alikwazi ukuhlukaniswa ukuze lilungiswe. Lokhu kwenza kube yindlela eshibhile, kodwa empeleni lilahlwa. I-valve "Ezingcezu Ezimbili" inomzimba owenziwe ngezingxenye ezimbili ezigoqeka ndawonye nxazonke kwebhola. Lolu uhlobo oluvame kakhulu. Ingasuswa epayipini bese ihlukaniswa ukuze kufakwe izivalo zangaphakathi, okunikeza ibhalansi enhle yezindleko kanye nokusebenza kahle. I-valve "Ezingcezu Ezintathu" iyona ethuthuke kakhulu. Inomzimba ophakathi oqukethe ibhola, kanye nezixhumi ezimbili ezihlukene zokugcina. Lo mklamo ukuvumela ukuthi ususe umzimba oyinhloko ukuze ulungiswe noma ushintshwe ngaphandle kokusika ipayipi. Libiza kakhulu kodwa lilungele imigqa yasefektri lapho ungakwazi ukukhokhela ukuvala okude kokulungiswa.

Uyini umehluko phakathi kwe-NPT nokuxhumeka kwe-flange?

Uklama uhlelo futhi udinga ukukhetha phakathi kwamavalvu anezintambo noma acwebezelayo. Ukwenza ucingo olungalungile kungenza ukufakwa kube yiphupho elibi kakhulu futhi ukulungiswa kubize kakhulu kamuva.

Ukuxhumeka kwe-NPT kunezintambo futhi kungcono kakhulu kumapayipi amancane, okudala uxhumano oluhlala njalo olunzima ukulunakekela. Ukuxhumeka kwe-Flange kusebenzisa amabhawodi futhi kulungele amapayipi amakhulu, okuvumela ukususwa kwe-valve kalula ukuze kulungiswe.

Ukukhetha phakathi kwe-NPT ne-flange kuncike ezintweni ezintathu: usayizi wepayipi, ingcindezi, kanye nezidingo zokulungisa. Imicu ye-NPT iyamangalisa kumapayipi amancane anobubanzi, ngokuvamile angama-intshi angu-4 nangaphansi. Isebenza kahle futhi idala uphawu oluqinile kakhulu, olunomfutho ophezulu uma ifakwa kahle nge-sealant. Inkinga yabo enkulu ukulungiswa. Ukuze ushintshe i-valve enentambo, uvame ukusika ipayipi. Ama-Flanges ayisisombululo samapayipi amakhulu nakunoma yiluphi uhlelo lapho ukulungiswa kuyinto eza kuqala khona. Ukubopha i-valve phakathi kwama-flanges amabili kuvumela ukuthi isuswe futhi ishintshwe ngokushesha ngaphandle kokuphazamisa ipayipi. Yingakho amakhasimende kaBudi asebenza ngokwakha ama-valve amakhulu okwelapha amanzi cishe kuphela a-oda ama-valve ane-flange. Abiza kakhulu kusengaphambili, kodwa onga isikhathi esiningi kanye nomsebenzi ngesikhathi sokulungisa esikhathini esizayo.

Ukuqhathaniswa kwe-NPT vs. Flange

Isiphetho

Ukukhetha intambo noma uxhumano olufanele—i-NPT, i-BSP, isokhethi, noma i-flange—kuyisinyathelo esibaluleke kakhulu sokwakha uhlelo oluphephile, olungavuzi futhi oluqinisekisa ukulungiswa okulula esikhathini esizayo.