I-AWWA C207-07 ngumgangatho opapashwe yi-American Water Works Association (AWWA) echaza imilinganiselo, ukunyamezela, kunye nezixhobo zeeflange zepayipi zensimbi ezisetyenziswa kwiinkqubo zamanzi. I-Class D hub flanges zenzelwe ukumodareyitha ukuya kwizicelo zoxinzelelo oluphezulu kwiinkqubo zokuhambisa amanzi.
Iiflange zeehabhu zodidi D zihlelwa ngokusekelwe kumlinganiselo wazo woxinzelelo kwaye ziqhele ukusetyenziswa kwiindawo zokucocwa kwamanzi, izibonelelo zamanzi amdaka, kunye nothungelwano lonikezelo lwamanzi lukamasipala. Ezi flange ziyilelwe ukubonelela uqhagamshelo oluqinileyo nolukhuselekileyo phakathi kwemibhobho, iivalvu, kunye nokufakwa kwizicelo zamanzi.
Kwi-AWWA C207-07, iiflange zeehabhu zoDidi D zichazwe ngokusekelwe kwimilinganiselo eyahlukeneyo, kubandakanywa nedayamitha ye-flange, i-bolt ye-diameter ye-bolt, i-bolt circle diameter, i-hub dimensions, i-dimensions ejongene, kunye neenkcukacha zobuninzi. Ezi nkcukacha ziqinisekisa ukuba ii-flanges zihlangabezana nemigangatho efunekayo kwaye zibonelela ngolungelelwaniso olufanelekileyo kunye nokutywinwa xa zixhunywe kwiinkqubo zemibhobho.
Udidi lwe-D hub flanges ngokuqhelekileyo luveliswa kwizinto ezifana ne-carbon steel okanye insimbi engenasici ukuqinisekisa ukuqina kunye nokuxhathisa ukubola kwizicelo zamanzi. I-hub ephakanyisiweyo embindini we-flange inika amandla okongeziweyo kunye nenkxaso xa idibanisa kwimibhobho okanye i-valve.
Ngokubanzi, i-AWWA C207-07 Udidi lwe-D hub flanges zizinto ezibalulekileyo kwiinkqubo zokuhambisa amanzi, ukuhambisa uqhagamshelo oluthembekileyo nolungenakuvuza kwiziseko zemibhobho kumaziko okucoca amanzi kunye nothungelwano lonikezelo lwamanzi lukamasipala.
