The following specification (particularly) describes the nature of the invention and the manner in which it is to be performed.
The invention relates to the operating of Safety Pressure Release device of Pressure Cooker.
That in the conventional system of Pressure Cooker used for preparation and cooking of food a safety valve, made of conventional rubber or plastic with a pin, is used for release of internal pressure, in case of excessive generation of steam on failure of the Pressure regulating and release Device (Whistle). The whistle in a Pressure Cooker is used for controlling , manipulating and releasing the pressure generated inside the cooker by steam. The Safety Valve is an additional emergency device for safety which automatically release the pressure in case of choking or disfunctioning of the main pressure regulating device ( whistle ). In the conventional system of pressure cooker, the safety pressure release device is non reusable and needs replacement time and again whenever the same attains its objective.
The newly invented device, the safety pressure release device of pressure cooker, is permanent, reusable, needs no replacement and safe in functioning as the newly invented device and its parts are made of metal ,and its safety pin is loaded with a spring, thereby resulting in economy and greater safety of pressure cooker.

The functioning and mechanism of newly invented device and its operation can be explained and describe in three stages, which are more specially explained by the way of illustration filed with this specification.
Stage I
Pressure Cooker is kept on L.P.G. Stove for first time and its internal pressure will reach to the greatest nominal cooking pressure i.e. 1 Kgf / cm2 at which Pressure Regulating Device Operates (Whistle) & allow excess steam to escape.
Stage 2
In case if whistle won't operate at this point due to blockage in vent & the internal Pressure exceed the greatest nominal pressure then the sealing pin will lift upwards & allow excess steam to escape and this device will work as Safety Pressure Release Device & operates between 1.5 Kgf/cm2 To 2.0 Kgf/cm2. Stage 3
After releasing excess steam it will take back it's position because of it's spring loaded
mechanism.

1 Claim -
l.An improved reusable replacement free safety device for release of pressure of Pressure cooker;
2. A device made of metallic components consisting of a sealing pin, ,ventilating shaft and
the spring loaded pin with auto lifting and auto release of pressure and auto closing
mechanism;
3.Device of safety valve for pressure cookers;,