Yenza igumbi lempompo elinesihlahla somqala kunye nokufakwa kweplate yefreyimu yeplate kwaye ke uludaka luya kuzihlamba.Njengoko indawo ye-cross-section inyuka, i-volute iyanciphisa isantya sombane kwaye inyuse uxinzelelo lwe-liquid.Injongo ephambili ye-volute liner kukunceda ukulinganisela uxinzelelo lwe-hydraulic kwi-shaft yepompo ye-slurry.