Grundfos Sololift 2 WC-1 Pump Key Information - Connections - close-coupled/low-level , urinal, and - Unique modular design with smooth line and rounded edges - Reliable operation - Professional cutter - Horizontal or vertical discharge pipe connection - Flexible discharge pipe adapters for outer pipe diameters of 23, 25, 28, and 32mm - Thermal overload switch - Clean hands service ability - Drain down hose connection - Optional warning alarm SOLOLIFT2 is a unique range of compact lifting stations enabling drainage of any domestic sanitary appliance wherever needed, independent from the gravity drain system. The units collect and pump the wastewater through a thin pressure pipe (>23mm) to the next down pipe. Choosing the most suitable type of pump is .