It's really noisy when the pressure from a pressure cooker is released from the whistle at the top of the lid. So if we use such a mechanism which lets the steam being released directly into top air thus reducing any kind of collision of steam with metal causing less noise. No worries about burning your face from the hot steam, because steam coming out of small hole at large pressure cools instantly as it comes to open space (pressure is negligible in comparison). I even thought of a...