with several nozzles forsedd aeration unit for tillforsel of vetska during vetskenivan in a luftningstank and seen for the manufacture of the aeration unit

摘要

A multiple jet aerator module or header which is formed substantially completely of fiber glass and which includes a right-circular tubular sheet-form liquid duct and a right-semicircular tubular sheet-form air duct having a radius substantially less than the radius of the liquid duct. Molded fiber glass liquid nozzles are located along the length of the liquid duct and a corresponding number of liquid-air nozzles are located along the length of the air duct in register with the liquid nozzles.