Electrically operated valve device comprising: - a supporting body having a valve seat; - a shutter which can be moved in a guided way between a first valve seat opening position and a second valve seat closing position; - a sliding member which is mounted movably on the supporting body, is fixed mechanically to the shutter, and is movable between an opening condition and a closing condition, in which it moves the shutter to the opening and closing position respectively; - a resilient return member associated kinematically with the sliding member and tending to retain said sliding member in the closing condition; - first opening actuator means which are associated with the sliding member and which are designed to enter an activated condition, in which they bring the sliding member into the opening condition against the action of the resilient return member; - retaining means mounted on the supporting body and capable of retaining the sliding member when the latter is in the opening condition; and - second closing actuator means which are associated with the retaining means, which can be electrically activated, and which can assume an activated condition in which they release the sliding member from the retaining means, allowing said sliding member to return from the opening position to the closing position; the retaining means comprising: - a locking element which engages releasably with the sliding member when the latter is in the opening position, as a result of the activation of the opening actuator means, thus preventing the return of said sliding member to the closing position; and - a release element which disengages the locking element from the sliding member when the closing actuator means are in the activated condition, thus allowing said sliding member to return to the closing position; whereby the locking element is rotatable with respect to the supporting body about a first axis of rotation (A-A) and tends to maintain in a resilient way an angular fastening position in which it is capable of being coupled releasably to the sliding member. - a supporting body having a valve seat; - a shutter which can be moved in a guided way between a first valve seat opening position and a second valve seat closing position; - a sliding member which is mounted movably on the supporting body, is fixed mechanically to the shutter, and is movable between an opening condition and a closing condition, in which it moves the shutter to the opening and closing position respectively; - a resilient return member associated kinematically with the sliding member and tending to retain said sliding member in the closing condition; - first opening actuator means which are associated with the sliding member and which are designed to enter an activated condition, in which they bring the sliding member into the opening condition against the action of the resilient return member; - retaining means mounted on the supporting body and capable of retaining the sliding member when the latter is in the opening condition; and - second closing actuator means which are associated with the retaining means, which can be electrically activated, and which can assume an activated condition in which they release the sliding member from the retaining means, allowing said sliding member to return from the opening position to the closing position; - a locking element which engages releasably with the sliding member when the latter is in the opening position, as a result of the activation of the opening actuator means, thus preventing the return of said sliding member to the closing position; and - a release element which disengages the locking element from the sliding member when the closing actuator means are in the activated condition, thus allowing said sliding member to return to the closing position; whereby the locking element is rotatable with respect to the supporting body about a first axis of rotation (A-A) and tends to maintain in a resilient way an angular fastening position in which it is capable of being coupled releasably to the sliding member.