| 摘要 |
1. A pressure limiting device for household apparatus operating under pressure, such as a pressure cooker, comprising a valve (1) which has a recess (2) for covering the nozzle (3) through which the steam leaves the apparatus, this recess (2) comprising a flap valve for closing the outlet nozzle, this valve (1) containing ballast whose weight determines the operating pressure thereof, the device further comprising a timer (6) comprising a rotary shaft (7) for adjusting the duration, which comprises means (8) cooperating with the flap valve for separating this latter from the outlet nozzle (3) and allowing the steam to escape, when the time preset on the timer (6) has passed, characterized in that the timer is housed inside the valve body (1) and forms the ballast thereof, the closing-off valves is formed by a meedle (5), the body valve (1), having all the abovementioned elements, forms a compact assembly of the valve type which may be easily removable from the nozzle through which the steam leaves, in the closed position of the valve this latter bears solely on the nozzle (3) through the needle (5) thus closing it off, in the open position of the valve this latter bears through a part (1a) of the valve body on a part (3a) external to the valve, the needle (5) having been moved by the timer so as to bear no longer on the nozzle (3) thus providing opening thereof.
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