optimised body design with guided float to ensure maximal protection of the bleeding and venting device | large bleeding or ventilation quantities owing to ventilation cross sections and connection flange dimensions of the same size | body made of GGG-50 with KTW-compliant epoxy coating | bleeding at operating pressure, max. bleeding performance in the startup mode and max. ventilation performance during draining of systems | optionally with anti-shock device for suppression of water hammers