Ukurikije uburyo buciriritse nakazi, DI hamwe nicyuma kidafite ingese ziraboneka nkumubiri wa valve, kandi guhuza flange ni PN10, PN16 na CLASS 150 nibindi. Ihuza rishobora kuba wafer, lug na flange.Icyuma cy'irembo valve hamwe na flange ihuza kugirango ituze neza.Icyuma cy'irembo icyuma gifite ibyiza byubunini buto, kwihanganira gutembera guto, uburemere bworoshye, byoroshye gushiraho, byoroshye gusenya, nibindi.