What are the types of regulators?

The two LPG gases, Butane and Propane, are very similar, and consequently many domestic appliances (e.g. most domestic cookers) are designed to run on either gas, but the standard supply pressure is somewhat different for each gas to accommodate the differences in the characteristics of the two gases. In the case of Butane, the standard supply pressure is 28 mbar (11" water gauge) and for Propane it is 37 mbar (14" water gauge) - regulators that supply either of these pressures are called "low pressure regulators". The appliance itself will have a badge on it identifying what gas and what pressure it is designed for. There are some appliances (not many) designed to work on considerably higher pressures and these use "high pressure regulators", and again these are clearly marked with what gas and what pressure they are designed for. DO NOT USE HIGH PRESSURE REGULATORS ON LOW PRESSURE APPLIANCES: THIS CAN LEAD TO A DANGEROUS SITUATION AND YOU MAY DAMAGE THE APPLIANCE.

What are care tips for regulators?

Each regulator is designed to fit a specific type of cylinder valve and a regulator that fits one type of valve will not fit any of the others.

The valve on Propane cylinders has a screw thread and only accommodates Propane regulators.

High-pressure regulators have a much narrower nozzle than that fitted to low-pressure regulators and use a much narrower hose (see picture below). DO NOT TRY TO FORCE A HIGH-PRESSURE HOSE ONTO A LOW-PRESSURE NOZZLE: YOU WILL SNAP THE BRAIDING INSIDE THE HOSE AND THE HOSE MAY SUBSEQUENTLY CRACK AND LEAK, RESULTING IN A POTENTIALLY DANGEROUS SITUATION. Always match the hose size to the nozzle size and only use hose designed for LPG and to the correct standard.