E fetaui lelei le valve faitotoa naifi mo le palapala ma le vaeluaga o le paipa o loʻo i ai alava, ma o lona ipu alatoto e mafai ona tipi ese le alava mea i totonu; e fa'aaogaina lautele i le fa'auluina o le koale slurry, mineral pulp ma papermaking slag slurry pipeline. Naifi faitotoa valve o le derivative o faitotoa valve, ma ei ai ona tulaga lelei tulaga ese ma disadvantages.1, O le oloa valve sili ona lelei mo slurry, slurry ma pulp pipeline. 2. Faiga faigofie, laʻititi laʻititi, mama mama ma faʻapipiʻi faigofie. Le lelei o le naifi faitotoa valve: e mafai ona faʻaaogaina i le paipa maualalo maualalo. O le valve faitotoa naifi e masani lava ona faʻaaogaina i slurry pipeline, lea e mafai ona taʻua o se valve faʻapitoa mo slurry pipeline.