| 摘要 |
Burner for gas cookers, comprising a body (4) provided with one or more series of apertures (7) defining one or more than concentric flame crowns and a base (1) fitted to the cooking hob (2). The burner presents an interchangeable circumferential ring (11) fitted to the said body by a mechanical means of fixture (12), which increases the diameter in proximity of the lower part. The said circumferential ring (11) is curved toward the cooking hob (2), like an annular skirt, and defines a calibrated passage (13) in the case of burners which collect the air from above the cooking hob.
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