Regulator won't fit

The regulator will not fit my cylinder

The help centre: the regulator's pressure (mbar) must match the oven's rating label; a different valve fitting is fine if the mbar matches. In the UK, red propane cylinders need a POL regulator instead of the 27 mm clip-on. A 1 lb camping tank needs the US Gas Tank Adaptor, or a camping-gas regulator in the UK.