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