| 摘要 |
Choke valve (10) for adjusting the flow of a filling fluid of the type comprising:
- a tubular element (11) which defines a tract of fixed duct (50) in its inside; and
- a mobile body (14) inside said fixed duct (50) between an upstream abutment (12) and a downstream one (26); wherein
- said mobile body (14) and said abutments are configured so that when said mobile body (14) rests against said downstream abutment (26) a first fluid flow occurs and when said mobile body (14) rests against said upstream abutment (12) a second fluid flow occurs;
- said rest position of said mobile body (14) against said downstream abutment (26) being spontaneous; said rest position of said mobile body (14) against said upstream abutment (12) being forced;
- said first fluid flow being greater than said second fluid flow. |
