70 litres combined waste oil suction and gravity collection units, with transparent chamber. Units with a 10 litres transparent chamber that can be used as a vacuum reservoir and allows an immediate inspection of the extracted waste oil. They can be used remotely once vacuum is created inside the steel reservoir. Discharge through a 1,5 m discharge hose pressurizing the unit. Includes safety valve to avoid over pressurization. Instruction book: 837810.