XL Series burners with sizes 1 to 7, capacities varying from 4 to 90 LPH are the simplest burners suitable for gravity feed supply as well as with pressure.
XY series burners are dual fuel high efficiency burners equivalent to North American 6562 series complete with primary and secondary butterfly valves, sensitrol oil micro valves and CI front plate. Capacities available are 8 to 100 LPH. 
SF Series excess air burners for gas / oil firing are also available with capacities up to 35 LPH.