The Pedrollo UP range of submersible multi-stage pumps are designed for pumping clean, non-aggressive water in various domestic and light duty applications including wells, irrigation and water boosting from tanks as an alternative to a dry mounted booster pump. They are light, efficient and compact being up to 20% smaller than equivalent alternatives. Particular features of the design includes independent floating impellers to minimize pump blockage, jacketed motor design for effective cooling, a raised suction inlet to minimise the ingress of debris and double mechanical seals with oil chambers for greater pump reliability.