Ivalvu yesango lemela isetyenziswa kakhulu kwiimeko eziphantsi koxinzelelo olufana nepulp nephepha, amalahle, ishishini leekhemikhali kunye neshishini lokutya. I-NSEN inokubonelela nge-uni-directional, bi-directional, metal seat, reliable seat kunye ne-through conduit type. Wamkelekile ukuqhagamshelana nathi ukuze ufumane isibonelelo okanye wenze ivalvu ngokwezifiso zeprojekthi yakho.