Gulu 2 la AWWA C207-18 limapereka zowunikira zamagulu a B. AWWA C207-18 ndi muyezo wofalitsidwa ndi American Water Works Association (AWWA) womwe umafotokoza kukula ndi kulolerana kwa ma flanges achitsulo omwe amagwiritsidwa ntchito m'makina opangira madzi.
Ma Flanges a mphete a Gulu B adapangidwa kuti azigwiritsidwa ntchito ndi chitoliro chachitsulo pazithandizo zokhala ndi mphamvu zofikira 86 psi (595 kPa) ndipo nthawi zambiri amagwiritsidwa ntchito m'madzi ndi madzi oyipa. Ma flanges awa amapangidwa mosiyanasiyana kuti agwirizane ndi ma diameter osiyanasiyana.
Table 2 ya AWWA C207-18 ya Class B ring flanges imatchula miyeso yosiyanasiyana monga bwalo la bawuti, kuchuluka kwa mabowo a bolt, bowo la bolt, makulidwe a flange, kutalika kwa hub, ndi miyeso yoyang'ana. Izi zimatsimikizira kuti ma flanges amapangidwa molingana ndi miyezo yofunikira ndikutsimikizira kulumikizidwa koyenera ndi kusindikiza akalumikizidwa ndi mapaipi.
Ma Flanges a Gulu B nthawi zambiri amapangidwa kuchokera ku chitsulo cha carbon kapena chitsulo chosapanga dzimbiri ndipo amamangidwa kuti athe kupirira momwe amagwirira ntchito komanso kukakamizidwa kwa makina ogawa madzi. Ma flanges adapangidwa kuti apereke kulumikizana kodalirika komanso kopanda kutayikira pakati pa mapaipi, mavavu, ndi zomangira pakugwiritsa ntchito madzi.
Mwachidule, Class B ring flanges monga momwe tafotokozera mu Table 2 ya AWWA C207-18 ndi zigawo zofunika kwambiri pamakina ogawa madzi, zomwe zimapereka kulumikizana kolimba komanso kotetezeka kwa zida zamapaipi m'malo opangira madzi otayira.
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