The Grundfos Unilift 7 is the big brother and is a strong and reliable submersible pump suitable for pumping rainwater, storm water and, grey water without stringy filaments. We supply this pump with an automatic float switch so that the pump will start and stop automatically. In the manual mode with the strainer plate removed, this pump will pump water down to a depth of 3mm. The pump is supplied with 10m of cable, a multi-size adaptor and internal check valve ready for use. We recommend 32mm flexible hose with this pump. Click here for the pdf spec sheet.