Abstract: A system or apparatus that in one implementation includes an electromagnetic valve having an actuator rod with a first coil and a second coil positioned at different longitudinal locations on the actuator rod and being situated electrically parallel to one another in an electrical circuit. The electromagnetic valve is constructed to induce a first voltage in the second coil when the electromagnetic valve is in the open position and to induce in the second coil a second voltage lower than the first voltage when the electromagnetic valve is in the closed position. A switch changeable between a first position and a second position is located in the electrical circuit. When the switch is in the first position the electrical circuit is configured to allow current from a power source to be delivered to the second coil. When the switch is in the second position the electrical circuit is configured to not allow current from a power source to be delivered to the second coil.

Abstract: A gas valve having a gas enclosure with a gas inlet, a gas outlet and a passage opening situated between the gas inlet and the gas outlet. A valve seat of the valve cooperates with the passage opening to regulate the flow of gas through the valve. An electrical actuator assembly is operatively coupled with the valve seat to regulate the flow of gas through the valve. In one implementation the gas enclosure is at least in part sealed by an elastic sealing member that is pressed upon by a printed circuit board that electrically connects the actuator assembly to an exterior of the gas valve.

Abstract: A method of assembling an electromagnetic gas valve having a first body, a second body, a unit comprising a valve disc and stem assembly coupled to a moveable insulating structure having a projecting member, an electromagnet assembly comprising a magnet fixed within the second body and a coil wound on a moving part with a cavity adapted to receive the projecting member, the first body having a gas inlet, a gas outlet and a through hole disposed between the gas inlet and outlet. In one implementation the insulating structure is coupled to the electromagnetic assembly by introducing a fluid under pressure into the gas outlet or gas inlet to act upon the unit to cause the projecting member to move in a direction towards the inside of the second body and into the cavity of the moving part of the electromagnet assembly.

Abstract: The rotary gas tap (1) with an electromagnetic safety valve (3), is of the conical regulation member (7) type, and the electromagnetic actuator (3a), being of a smaller power and size, is built entirely into a pipe housing (2a) in the body of the tap. The valve actuator (3a) is of the type where the seal member (9) is lifted by means of a DC voltage. The cylindrical magnetic frame (14) penetrating into the coil (15) is guided inside it, and a magnetic capsule (16) surrounding the coil is of a diameter Dh of around 14 mm, adjusted to that of the housing (8) in the body of the tap (2a). The stroke “R” of the seal member (9) corresponds to a gap (G) greater than 2.5 mm, reaching a sizeable passage opening “A” in the valve (9,10) necessary for a maximum inlet flow (Q) in the tap. At the same time the electromagnetic actuator (3a) is of low power, by means of a low reluctance in the magnetic circuit (13-16), although the diameter “Da” of the cylindrical frame is restricted to less than 4 mm.

Abstract: A control system for the ignition of a gas burner that includes an electromagnetic valve having a first coil and a second coil, the activation of the first and second coils controlling the flow of gas through the electromagnetic valve. An incandescent element which is designed to be heated until it reaches the gas combustion temperature of the gas delivered to the burner is disposed electrically in series with the first coil, the incandescent element and first coil forming a first branch that is electrically parallel to the second coil.

Abstract: A gas valve having a gas enclosure with a gas inlet, a gas outlet and a passage opening situated between the gas inlet and the gas outlet. A valve seat of the valve cooperates with the passage opening to regulate the flow of gas through the valve. An electrical actuator assembly is operatively coupled with the valve seat to regulate the flow of gas through the valve. In one implementation the gas enclosure is at least in part sealed by an elastic sealing member that is pressed upon by a printed circuit board that electrically connects the actuator assembly to an exterior of the gas valve.

Abstract: A system or apparatus that in one implementation includes an electromagnetic valve having an actuator rod with a first coil and a second coil positioned at different longitudinal locations on the actuator rod and being situated electrically parallel to one another in an electrical circuit. The electromagnetic valve is constructed to induce a first voltage in the second coil when the electromagnetic valve is in the open position and to induce in the second coil a second voltage lower than the first voltage when the electromagnetic valve is in the closed position. A switch changeable between a first position and a second position is located in the electrical circuit. When the switch is in the first position the electrical circuit is configured to allow current from a power source to be delivered to the second coil. When the switch is in the second position the electrical circuit is configured to not allow current from a power source to be delivered to the second coil.

Abstract: A control system for the ignition of a gas burner that include an electromagnetic valve having a first coil and a second coil, the activation of the first and second coils controlling the flow of gas through the electromagnetic valve. An ignition element which is designed to be heated until it reaches the gas combustion temperature of the gas delivered to the burner is disposed electrically in series with the first coil, the ignition element and first coil forming a branch. The control system also includes an auxiliary electromagnetic valve with a coil, the activation of the coil controlling the flow of gas through the auxiliary electromagnetic valve. The flow of gas towards the burner is allowed when both the electromagnetic valve and the auxiliary electromagnetic valve are open.