Hydro jetting uses high-pressure water to clear away even the most stubborn blockage in a sewer line such as those caused by tree roots or by an accumulation of household grease, hair, or paper products (i.e. paper towels). HydroJet Cleaning breaks up the stoppage and washes it away rath...
Backflow weir sewer system main duct - has hinged flap held in incoming or on-going line above water at normal level by floating counterweight German Patent DE3937685 Kind Code: A1 Abstract: The backflow weir for the outlet from a drain system etc. into an outfall, flowing at right angles ...