So this is a 2nd video to the first one about the Breville BPR200 Pressure Cooker. Its the exact same model with same amounts of water in the bowl to do a test comparison that it should not hiss to the extent of the previous video. I called Breville on the support line and they said ' it should hiss' but what you see for yourself would anyone like to top up on fluid every 30mins incase it boils itself dry and if it seals with no hissing that's what pressure cooking is its meant to seal in the steam. I let the video do the talking the BPR200 should not hiss like it does on the 1st video and I'm certain there are more people out there with this exact same problem but Breville with their un helpful support line doesn't want to you exchange it for another one.