Entlüftungs- und Sicherheitsventil für Dampfdruckkochtöpfe

摘要

There is provided a novel dual functioning, dual metal safety release valve for a pressure cooker. This valve comprises a metallic retainer member (1) having a bore (7) therein in which is held a fusible metal alloy (2). The metallic retainer is held by a holding member (3) in a suspended manner loosely in an opening in the lid (4) of the pressure cooker contrary to the conventional manner in which the said release valve is sealingly fitted to the pressure cooker. The safety release valve is held at a specific angle ( alpha ) and is so fabricated that when the pressure cooker is in operation, the safety release valve remains in suspended condition in the opening of the lid of the cooker, thereby letting air to escape first and when substantially all the air has escaped, the developing steam pressure forces the safety release valve upwards so that resilient washer (6) is sealing the opening in the lid of the cooker.