IGT 21mm Clip On Regulator 28mbar. For use with CALOR 7kg & 15kg Butane Gas Bottles Operating Pressure = 28 mbar Outlet = 8mm Nozzle N.B You may find an instructions leaflet stating not to be used in caravans. European standard EN12864 states that after 2004 all new caravans and motorhomes must be fitted with a 30mbar bulkhead regulator. The quick- on instructions reflect this standard. Therefore most caravans and motorhomes built before 2004 will not have a 30mbar bulkhead regulator and the IGT 21mm Clip On Regulator 28mbar will be suitable. Sold in singles or Outer Boxes x 50.