Filter unit with air feedback - has pressure relief vent is integrally formed at filter proper, with filter outlet air directly impinging on relief face

摘要

The air filter working space is joined by a duct to the intake side, and the offtake side has an air feedback to include a pressure relief vent and an air return duct to link the filter outlet to the working space. Filtered air direct from the filter changes direction on the vent pressure relief surface. The relief vent (5) is integrated with the filter (1), and the air from the latter impinges directly on the pressure relief surface (6) before entering the feedback duct (8) via the outlet (7). USE/ADVANTAGE - For industrial ventilating systems, without need for expensive feedback ducts, but with reduced risk of damage.