Abstract: A pressure regulating valve for pressure cookers comprises a tubular projection (1) protruding from a cooker lid (2) and on which a needle (4) is poised, that is mounted to the bottom of an inverted cup shaped cylindrical body (6) provided with an external upper threaded projection (7) on which a head (8) is screwed. Steam escape openings (9) and a lower aperture are surrounded by an internal rim (10) and by an external ferrule (11). The rim is screwed on the end outside thread of the tubular projection (1), and the ferrule supports two selectively used weights, bottom (14) and top (15) defining together a spherical shape in the present device. The cup shaped piece (6) is provided with internal longitudinal channels (17) at the bottom of which there are corresponding steam escaping openings (9).

Abstract: An improved pressure cooker of the type having a container and a lid. The container has an open mouth with an outer rim having spaced, outwardly projecting rim portions. The lip includes a peripheral, depending lip provided with spaced, inwardly projecting lip portions. The lid is coupled to the container to cover the mouth by positioning and twisting the lid such that the lip portions engage the underside of the rim portions thereby coupling the lid to the container. A seal ring is interposed between the lid and rim. The lid further includes a pressure regulator. The improvement according to the present invention includes a safety valve formed by an aperture cut out of the lip between the lip portions and located to lie adjacent the seal ring. In response to overpressurization of the cooker, a portion of the ring is urged from between the rim and lid into the aperture to provide a passageway through which the pressure is allowed to escape.

Abstract: An exhaust valve, in pressure cooker lids, comprises a vertical tube on which a suitable weight is applied provided with several steam exhaust points which is provided on its free edge with an external thread where the weight is screwed, leaving a free internal space forming a chamber into which the exhaust holes for the steam open, and having on the upper part, a coaxial projection which may penetrate into the internal part of the exhaust or exit tube of the valve.