Lub qhov rooj riam yog qhov tsim nyog rau cov kav dej av nkos thiab nruab nrab uas muaj cov fiber, thiab nws lub phaj valve tuaj yeem txiav cov khoom siv fiber hauv nruab nrab; nws yog dav siv hauv kev xa cov thee slurry, cov ntxhia pulp thiab cov ntawv slag slurry pipeline. Lub qhov rooj riam yog qhov derivative ntawm lub qhov rooj valve, thiab muaj nws cov txiaj ntsig thiab qhov tsis zoo tshwj xeeb.1, Nws yog cov khoom valve nyiam rau slurry, slurry thiab pulp pipeline. 2. Cov qauv yooj yim, ntim me me, lub teeb yuag thiab yooj yim installation. Qhov tsis zoo ntawm lub qhov rooj riam: nws tsuas yog siv tau rau hauv cov kav dej qis-siab. Lub qhov rooj riam feem ntau yog siv rau hauv cov kav dej slurry, uas tuaj yeem hais tias yog lub qhov rooj tshwj xeeb rau cov kav dej slurry.