chiller / tdh: my orange hose is rated to 2.8 mpa, my 9kg bottle is only rated to 3.3 mpa (as are most vehicle ones too) this means 2,800 KPA, my reg is only rated to 400kpa, and I've had no need to run it past 125-150 kpa (but have had it around 250kpa) for a laugh (the horror, the horror:))...