All parts in contact with medium are made of stainless steel. Disposal of waste water and sewage also with fibrous components and solids up to Ø 50 mm. Double mechanical seal with oil trap. Mechanical seal on pump side with silicon carbide running surfaces for long service life even with abrasive substances in the pumped medium. Fail-safe during continuous operation (depending on the water level). Integrated thermal cut-out switch. Float switch