The heavy duty Foker Triple Burner Cast Iron Gas Boiling Ring with Flame Failure Device is ideal for outdoor caterers. With an adjustable needle valve, flame control is extremely accurate from simmering to a very impressive 4kW maximum output. A strong cast iron frame makes its perfect for those outdoor events. The three burners can be operated independently to give control from fast boiling to simmer. Compare prices from: Foker in Cooking Hobs