Three-way valve for fluids

Claim 1

A three-way valve within an enclosure and adapted to control a further mechanism through an output channel fed with an operative fluid through an input channel or connected with an exhaust channel, said valve comprising a central tubular member, an axially bored closure member at each end of the opposite ends of said tubular member, each said closure member provided with a seat at its inner end, the bore in one of said closure members comprising said exhaust channel, the bore in the other of said closure members communicating with said input channel, a single ferromagnetic disc extending across and out of the tubular member and provided with an opening permanently ensuring the passage of the fluid through the tubular member, two magnetic cores slidably fitted inside the tubular member on the corresponding sides of the ferromagnetic disc, a valve member carried by each core on the side thereof facing outwardly, said valve members adapted to selectively close the corresponding seats With reference to the output channel, two electric windings surrounding the tubular member and in registry with the corresponding cores, each of said windings selectively producing a magnetic field through said ferromagnetic disc moving the corresponding valve out of operative contact with the related cooperating seat and a passageway for the fluid, said passageway opening into said tubular member between said two seats.