| 摘要 |
Valve for intercepting fluids in liquid or air state used in particular in the industrial plants for bottling liquid food products, comprising a valve body defined in which is a pipe for the passage of a fluid, a membrane (9) provided with a fixed perimeter portion, a moveable central portion (16), and an annular connection portion and a cover (18) removably fixed to the valve body with which it cooperates to hold the perimeter portion of the membrane. Control means mounted in the cover to move the central portion of the membrane between a closure position and an opening position are provided for. The central portion of the membrane defines a shaped concavity susceptible to partially penetrate into the pipe ending annularly in sealing contact with its abutment surface against a tilted flat entrance surface of the pipe.
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