Mgbe achọrọ valvụ bi-directional iji na-ahazi ụzọ na-aga n'ihu ma gbochie nlọghachi azụ, valvụ nru ububa NSEN nọ ọdụ bi-directional bụ nhọrọ gị.The sealing adopts n'ụzọ zuru ezu metal ka metal Ọdịdị, usoro a na-ukwuu etinyere na Ike Plan, Central kpo oku, mmanụ & gas ụlọ ọrụ.Nabata ịkpọtụrụ anyị ka ị nweta katalọgụ ma ọ bụ hazie valvụ maka ọrụ gị.
