OIL FILTER is a basket type filter with various mesh sizes suiting various operations. OIL FILTER provides fine filtering to the furnace oil thereby avoid choking of oil nozzles reducing the firing rate and thus a dirtfree oil is supplied to the burner for better atomization and combustion.Two basket filter is combined to give duty cum stand by operation. A Changeover valve is provided on the filter to select the basket to filter the oil.