Tafura 2 yeAWWA C207-18 inopa zvakatemwa zveKirasi D mhete dzemhete. AWWA C207-18 chiyero chakaburitswa neAmerican Water Works Association (AWWA) chinotaridza hukuru uye kushivirira kwesimbi pombi flanges inoshandiswa mumagadzirirwo emvura.
Kirasi D mhete dzemhete dzakagadzirirwa kushandiswa nesimbi pombi yemasevhisi ane mwero kusvika kune yakakwira kumanikidza. Aya maflange anowanzo shandiswa mumvura netsvina maapplication uko madhiri ekushanda akakwira kupfuura aya eClass B flanges.
Tafura 2 inotsanangura zviyero zvakasiyana zveClass D flanges senge bhaudhi denderedzwa dhayamita, huwandu hwemabhoti maburi, bhoti gomba dhayamita, flange ukobvu, hub kureba, uye mativi akatarisana. Aya maratidziro anovimbisa kuti maflange anogadzirwa kune anodiwa zviyero uye anovimbisa kurongeka kwakaringana uye chisimbiso kana akabatana nemapombi masisitimu.
Kirasi D mhete dzemhete dzinowanzo gadzirwa kubva kabhoni simbi kana simbi isina simbi uye inokwanisa kumirisana nepamusoro pekushandisa kumanikidza kwemaitiro ekugovera mvura. Iwo maflange akagadzirwa kuti ape yakavimbika uye isina-inodonhedza kubatana pakati pemapombi, mavharuvhu, uye fittings mumashandisi emvura.
Muchidimbu, Class D ring flanges sezvakatsanangurwa muTable 2 yeAWWA C207-18 zvinhu zvakakosha mumasisitimu ekugovera mvura, zvichipa kubatana kwakasimba uye kwakachengeteka kwepombi yezvivakwa mumidziyo yekuchenesa mvura, zvivakwa zvetsvina, uye masevhisi emvura emagetsi.
