Andersp: such 'holes' are customary and work like with the Bunsen-Burner,
they decrease gas consumption by adding some air to a gas/air mix - you will get
a rather mellow flame without them, or the straight blast with some extra air soaked ... ~*~
(gem) Hvis du vil spare båndbrede kan du reducere mængden af information der vises på dine sider under indstillinger. Prøv at ændre antallet af spil på hovedsiden og antallet af beskeder per side. (pauloaguia) (vis alle tips)