| 摘要 |
The valve with progressive opening comprises a shutter element (23) located in an internal space (14) of a tubular valve body (13) including, at one end, a conical seat (20) extended peripherally by a fluid-passage structure (21) including at least one fluid passage (22), the shutter element (23) including a seal (31) interacting, in the closed position, with the seat (20) and, at least at the start of opening, with the internal wall of the skirt (21) in order progressively to open the passages (22). Application in particular to the control of cutting oxygen in a cutting torch. <IMAGE>
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