Drainage block in expansion vessel - overflow return pipe ends below liquid surface in vessel

摘要

The warm water heater prevents drainage of water insoluble gas blocking separating agents, located on the water surface. The ends of an overflow pipe (2) and a return pipe (3) projecting into an expansion vessel (1) are directed downwards, and angled downwards. The vertical dimension (7) of the angled section is larger than the dimension of the thickness (8) of the separating agent.