Patent ID: 7150291

Claim:
Apparatus comprising a normally closed valve element that can be mounted on a mobile part and fluid distributor means that can be mounted on a stationary part and is operatively connectable with said valve element, said valve element comprising; a bell-body provided with a bottom part and an opening which can be closed with a closing element, elastic means interposed between said closing element and said bottom part, said elastic means being suitable for maintaining said closing element in a configuration in which said opening is closed, a pipe passing through said bottom part of said body for connecting said body to a fluid-dynamic device, collar means radially protruding from the inner part of said opening and suitable for being in contact with and limiting said closing element, and seal means interposed between said closing element and said collar, and wherein the distributor means comprises: a container sealing body provided with at least three fluid inlets placed in order, a chamber axially provided inside said container sealing body, a slider that is arranged for axially sliding in said chamber and that is moved by first drive and return means, and that is provided with a front outlet, and a stem element slidable mounted in a corresponding seat provided in said slider, which is moved by second drive and return means, so as to partially protrude from said slider through said opening.