horizontal single-stage double-suction volute pump 卧式单级双吸蜗壳泵

single-suction volute pump 单级离心泵 ; 单吸涡卷泵

single-stage end-suction volute pump 单级侧面进口蜗壳泵

single suction volute pump 单级离心泵

double suction volute pump 双吸式蜗壳泵 ; 双吸式螺旋泵

suction double volute casing pump 立式端吸双蜗壳泵

double-suction single-stage volute type pump 双吸式单级蜗壳式泵