Ductile iron hard-back wafer butterfly valve, ts'ebetso ea letsoho, khokahano ke ea maemo a mangata, e hokahane le PN10, PN16, Class150, Jis5K/10K, le litekanyetso tse ling tsa flange ea liphaephe, tse etsang hore sehlahisoa sena se sebelisoe haholo lefatšeng. Haholo-holo e sebelisoa tsamaisong ea nosetso, ho hloekisa metsi, phepelo ea metsi litoropong le mererong e meng.