A Full Range of Calor Gas branded regulators inc Butane Propane Campingaz High pressure & Auto Changeover systems. regulators include 21mm Butane clip on, 29mbar Butane regulator to fit the calor 4.5kg, Campingaz 29mbar regulator to fit the 907, 904 &901 cylinders, Patio gas 27mm clip on regulator to fit the 13kg and 5kg patio cylinders, Propane screw on 1.5 kg/h regulator to fit the standard propane cylinders, 37mbar Propane 4kg/h regulator to fit standard propane cylinders on high usage appliances, Propane HP a range of high pressure regulators for high pressure appliances also a range of automatic changeover regulators for commercial and home use ideal for central heating. All Calor Gas regulators come with a 5 year warranty