Riam rooj vag valve yog dav siv nyob rau hauv tsis tshua muaj siab mob xws li pulp thiab ntawv, thee, tshuaj lom neeg kev lag luam thiab zaub mov kev lag luam.NSEN tuaj yeem muab uni-directional, bi-directional, hlau zaum, resilient zaum thiab los ntawm conduit hom.Txais tos tiv tauj peb kom tau txais kev thov lossis kho lub valve rau koj qhov project.