Iivalvu zebhola yomanyano lokwenyani zilinganiswa ngobungakanani bombhobho oqhelekileyo (NPS) aqhagamsheleka kuwo, njengo-1/2″, 1″, okanye 2″. Lo bungakanani bubhekisa kububanzi bangaphakathi bombhobho ohambelanayo, hayi imilinganiselo yevalve yomzimba, iqinisekisa ukulingana okugqibeleleyo.

Oku kulinganisa kubonakala kulula, kodwa kulapho iimpazamo ezininzi zenzeka khona. Iqabane lam e-Indonesia, uBudi, ukwazi kakuhle oku. Abathengi bakhe, ukusuka kwiikontraka ezinkulu ukuya kubathengisi basekhaya, abanako ukufikelela kwimiba engafaniyo kwisiza. Umyalelo omnye ongalunganga unokuphazamisa lonke ikhonkco lokubonelela kunye nexesha leprojekthi. Yiyo loo nto sihlala sigxile ekucaceni. Masicazulule eyona mibuzo ixhaphakileyo malunga nezi zivalo zibalulekileyo ukuqinisekisa ukuba yonke iodolo ilungile kwasekuqaleni.

Yintoni ivalve yebhola yomanyano yokwenene?

Ivalve iyasilela, kodwa incamathele ngokusisigxina emgceni. Ngoku kufuneka ukhuphe yonke inkqubo kwaye unqumle icandelo elipheleleyo lombhobho nje ukulungiswa okulula.

Ivalve yebhola yomanyano lokwenyani luyilo olunamacandelo amathathu. Inomzimba osembindini onokuthi ususwe lula ukugcinwa okanye ukutshintshwa ngokukhupha amantongomane "emanyano" amabini, ngaphandle kokusika umbhobho odibeneyo.

Makhe sichaze ukuba kutheni le nto uyilo ibaluleke kakhulu kwiingcali. Inxalenye "yenyani yomanyano" ibhekisa ngokuthe ngqo kunxibelelwano kumacala omabini evalve. Ngokungafaniyo nomgangathoivalve edibeneyoukuba issolvent-welding ngokusisigxina ibe ngumgca, aivelufa yomanyano lwenyaniinamalungu amathathu ahlukeneyo anokwahlulwa.

Amacandelo aPhambili

• Iziqwenga ezimbini:Ezi ziphelo ezifakwe ngokusisigxina kwimibhobho, ngokuqhelekileyo nge-solvent welding ye-PVC. Benza uxhulumaniso oluzinzileyo kwindlela yakho.
• Iqumrhu elinye eliphakathi:Lo ngundoqo wevalve. Iqulethe indlela yebhola, isiqu, isiphatho, kunye nezitywina. Ihlala ngokukhuselekileyo phakathi kweziqendu ezimbini.
• Amandongomane amabini oManyano:La mandongomane makhulu, anemisonto yomlingo. Batyibilika ngaphaya kweesilaphu kwaye bajijela kumzimba osembindini, batsala yonke into kunye kwaye benza ukuqina,itywina elingangeni manzinge-O-amakhonkco.

Okuuyilo lwemodyulingumdlalo-ukutshintsha ukugcinwa. Ukhulula nje amandongomane, kwaye wonke umzimba wevalvu uphakamisela phandle. Eli nqaku lixabiso elingundoqo esilinikela kwiPntek—uyilo olukrelekrele olusindisa abasebenzi, imali, kunye nexesha lokuphumla kwinkqubo.

Indlela yokuxelela ukuba ingakanani ivalve yebhola?

Unevalve esandleni sakho, kodwa akukho manqaku acacileyo. Udinga uku-odola ukutshintshwa, kodwa ukuqikelela ubungakanani yindlela yokupheka iimpazamo ezibiza kakhulu kunye nokulibaziseka kweprojekthi.

Ubungakanani bevalve yebhola phantse isoloko ibhalwe okanye iprintwe ngqo kumzimba wevalvu. Khangela inani elilandelwa ngu “intshi” (“) okanye “DN” (I-Diameter Nominal) yobungakanani bemetric.

Ubungakanani beValve lusekelwe kwinkqubo ebizwaUbungakanani bombhobho oqhelekileyo (NPS). Oku kunokubhida ekuqaleni kuba inombolo ayingomlinganiselo othe ngqo wayo nayiphi na indawo yesivalo ngokwayo. Yireferensi eqhelekileyo.

Ukuqonda iimpawu

• Ubungakanani bombhobho oqhelekileyo (NPS):Kwiivalvu zePVC, uya kubona ubungakanani obuqhelekileyo obufana ne-1/2″, 3/4″, 1″, 1 1/2″, 2″, njalo njalo. Oku kukuxelela ukuba yenzelwe ukungena kumbhobho onobukhulu obufanayo begama. Ngamafutshane, i-1″ ivalve ilingana nombhobho oyi-1". Yiloo nto ngqo.
• I-Dimeter Nominal (DN):Kwiimarike ezisebenzisa imigangatho yemetric, uya kuhlala ubona iimpawu zeDN endaweni yoko. Umzekelo, i-DN 25 yimetric elingana ne-NPS 1″. Yingqungquthela nje eyahlukileyo yokubiza ubungakanani bemibhobho yomgangatho ofanayo.

Xa uhlola ivalve, jonga umqheba okanye umzimba oyintloko. Ubungakanani budla ngokubunjwa kanye kwiplastiki. Ukuba akukho manqaku konke konke, indlela ekuphela kwayo eqinisekileyo kukulinganisa i-diameter yangaphakathi yesokethi yevalvu, apho umbhobho uya khona. Lo mlinganiselo uya kuhambelana ngokusondeleyo nobukhulu bangaphandle bombhobho ohambelanayo olungiselelwe wona.

Uthini umahluko phakathi komanyano olunye kunye neevalvu zebhola ezidityanisiweyo?

Uthenge ivalve “yemanyano” ulindele ukususwa lula. Kodwa xa uzama ukusevisa, ufumanisa ukuba linye icala kuphela elikhululayo, nto leyo ekunyanzelela ukuba ugobe kwaye ucofe umbhobho ukuze uphume.

Ivalve yomanyano enye inenati enye yomanyano, evumela ukuqhawuka kwelinye icala lombhobho. Umanyano oluphindiweyo (okanye umanyano oluyinyani) ivelufa yebhola inamandongomane amabini, evumela umzimba ukuba ususwe ngokupheleleyo ngaphandle koxinzelelo lombhobho.

Lo mahluko ubaluleke kakhulu kwinkonzo yokwenyani kunye nomsebenzi wobungcali. Ngelixa ivalve yomanyano ingcono kancinane kunevalve ebambeneyo eqhelekileyo, ayinikezeli bhetyebhetye olupheleleyo olufunekayo kulondolozo lwexesha elide.

Kutheni i-Double Union inguMgangatho woBuchule

• Umanyano Olodwa:Ngombhobho omnye womanyano, elinye icala levalve ligxininiswe ngokusisigxina kumbhobho wokuphela. Ukuyisusa, ukhulula i-nut enye, kodwa emva koko kufuneka utsale okanye ugobe umbhobho ukuze ukhuphe ivalve. Oku kubeka uxinzelelo olukhulu kwezinye izinto kwaye kunokubangela ukuvuza okutsha ezantsi emgceni. Sisisombululo esingaphelelanga esinokubangela iingxaki ezininzi.
• Umanyano oluphindiweyo (Umanyano lweNyaniso):Lo ngumgangatho wobugcisa kunye nento esiyivelisayo ePntek. Ngamantongomane amabini omanyano, zombini ukudityaniswa kwemibhobho kunokukhululeka ngokuzimeleyo. Umzimba wevalvu unokunyuswa ngokuthe ngqo phezulu kwaye uphume emgceni ngoxinzelelo lweqanda kwimibhobho. Oku kubalulekile xa ivalve ifakwe kwindawo exineneyo okanye iqhagamshelwe kwisixhobo esibuthathaka njengempompo okanye isihluzo.

Buthini ubungakanani obuqhelekileyo bevalve yebhola egcweleyo?

Ufake ivalve, kodwa ngoku uxinzelelo lwamanzi kwinkqubo lubonakala lusezantsi. Uyaqonda ukuba umngxuma ngaphakathi kwevalve incinci kakhulu kunombhobho, udala i-bottleneck ethintela ukuhamba.

Kwibhobho egcweleyo (okanye izibuko eligcweleyo) ivelufa yebhola, ubungakanani bomngxuma osebholeni wenziwe ngobunjineli ukuze bungqinelane nedayamitha yangaphakathi yombhobho. Ke, i-1″ ivelufa egcweleyo inomngxuma okwanayo no-1″ ububanzi, iqinisekisa uthintelo lokuhamba elinguziro.

Igama elithile "ukuzala okugcweleyo” ibhekisa kuyilo lwangaphakathi kunye nokusebenza kwevalve, hayi ubungakanani bayo bangaphandle bonxibelelwano.

Ibhore Elipheleleyo vs

• IBore Egcweleyo (Izibuko Eligcweleyo):Umngxuma ophumela ebholeni ulingana nobukhulu obungaphakathi (ID) wombhobho oqhagamshelwe kuwo. Kwivalve engu-2″, umngxuma ukwangu-2″. Olu luyilo ludala indlela egudileyo, engathintelwanga ngokupheleleyo yolwelo. Xa ivalve ivuliwe, kuba ngathi ayikho kwalapho. Oku kubalulekile kwiinkqubo apho kufuneka ukwandise ukuhamba kunye nokunciphisa ukuhla koxinzelelo, njengeendlela eziphambili zamanzi, iimpompo zokungenisa, okanye iinkqubo zokuhambisa amanzi.
• Izibuko eliMgangatho (Izibuko eliNcitshisiweyo):Kolu yilo, umngxuma ngebhola isayizi enye encinci kunobungakanani bombhobho. I-1″ ivelufa yezibuko esemgangathweni inokuba nomngxuma oyi-3/4″. Esi sithintelo sincinci samkelekile kwizicelo ezininzi kwaye yenza ivalve ngokwayo ibencinci, ibe khaphukhaphu, kwaye ingabizi kakhulu ukuyivelisa.

EPntek, iivalvu zethu zebhola zomanyano zigcwele. Sikholelwa ekuboneleleni ngezisombululo eziphucula ukusebenza kwenkqubo, hayi ukuyithintela.

Ukuqukumbela

Iisayizi zevalvu yebhola yomanyano yokwenyani zihambelana nombhobho eziwungenayo. Ukukhetha umanyano oluphindwe kabini, uyilo olugcweleyo luqinisekisa ukugcinwa lula kunye nokuthintela ukuhamba kweqanda kwinkqubo ethembekileyo, yobungcali.