Mu AWWA C207-07, Class E hub flanges ndi mtundu wina wa flange womwe umapangidwira kuti ugwiritsidwe ntchito pamakina operekera madzi. Bungwe la American Water Works Association (AWWA) lakhazikitsa miyezo ya zitsulo zamapaipi zomwe zimagwiritsidwa ntchito m'makina opangira madzi, ndipo Class E hub flanges ndi gawo la muyezo umenewu.
Ma flange a Class E hub adapangidwa kuti azigwiritsidwa ntchito ndi zokakamiza zogwira ntchito kwambiri poyerekeza ndi ma flange a Class D. Ma flanges awa nthawi zambiri amagwiritsidwa ntchito m'malo oyeretsera madzi, malo opangira madzi otayira, komanso ma network operekera madzi am'matauni komwe kumafuna kukakamiza kumakhala kovutirapo.
Mu AWWA C207-07, Class E hub flanges amasankhidwa kutengera kukakamizidwa kwawo ndipo amapangidwa kuti akwaniritse zofunikira za kapangidwe kake. Muyezowu umatchula miyeso yosiyanasiyana monga mainchesi a flange, bolt hole diameter, bolt circle diameter, miyeso ya hub, miyeso yoyang'ana, ndi makulidwe amtundu wa Class E flanges.
Ma flange a Class E hub nthawi zambiri amapangidwa kuchokera ku zinthu monga chitsulo cha kaboni kapena chitsulo chosapanga dzimbiri kuti zitsimikizire kulimba komanso kukana dzimbiri pakugwiritsa ntchito madzi. Malo okwera pakati pa flange amapereka mphamvu zowonjezera ndi chithandizo pamene akugwirizanitsa ndi mapaipi kapena ma valve.
Zomwe zafotokozedwa mu AWWA C207-07 Table 4 za Class E hub flanges zimawonetsetsa kuti ma flanges amakwaniritsa zofunikira pakugwiritsa ntchito madzi amadzi ndipo amapereka kulumikizana kodalirika, kopanda kutayikira pamakina ogawa madzi othamanga kwambiri.
Mwachidule, Class E hub flanges yofotokozedwa mu AWWA C207-07 Table 4 imagwira ntchito yofunika kwambiri pamakina operekera madzi, kupereka kulumikizana kotetezeka komanso kodalirika kwa zida zamapaipi m'malo oyeretsera madzi, malo oyeretsera madzi oyipa, ndi ma network ogawa madzi amtawuni.
