WASSERBELÜFTER

摘要

A water aerator discharge head with a rigid baseplate (1) is approximately horizontal during operation and has a flat upper face incorporating one or more air passages. The rigid plate (1) is covered by a rubber membrane (5) incorporating numerous fine slits, and which is held in place at the periphery. Air passes between the rigid plate and rubber membrane thereby enlarging and emerging through the slits. The novelty is that the rubber membrane (5) thickened edge (8) is hook-shaped and completely surrounds the rigid baseplate (1) angled edge. The hook section rubber edge is much thicker in the lower section, than in the slotted membrane section.