Abstract: There is described a filtering device (1) for systems for supplying gas to internal combustion engines, comprising, integrated in the device, sensor means (10, 11, 12) for detecting the pressure and temperature of the gas being injected into the engine as well as the pressure at the inlet manifold of the engine.

Abstract: There is described a device for reducing the delivery pressure of a combustible gas, particularly for systems supplying gas to internal combustion engines for automotive vehicles, comprising a valve seat (5) positioned in a gas flow tube (2) formed in the body (1a) of the reducer, between an inlet section (3) and an outlet section (4), a diaphragm-operated plug element (6) associated with said valve seat (5) and movable along a predetermined axial direction (X) for the purpose of opening and closing the seat (5), a spring device (9) acting on the to diaphragm to subject the latter to a predetermined resilient load, an actuator rod (11) connected for operation to the plug (6) and to the diaphragm, a pressure compensator element (12) which is fixed to the plug (6) upstream of the valve seat with respect to the direction of flow, and which is axially extensible along that direction as a result of the movement of said plug (6) relative to the valve seat (5).

Abstract: A system is described for sealed connection between a pair of tubular sections (3, 2a) intended to convey a gaseous fluid under pressure, wherein the sections are capable of relative orientation from and towards a preselected positioning at which they are rigidly connected to each other with a sealed connection. The system comprises nesting coupling means, respectively provided on one and the other of the tubular sections coaxially engageable with each other, gastight sealing means between the tubular sections, axial checking means (6, 7) between the nesting coupling means for holding one of the tubular sections relative to the other section in the direction of mutual axial coupling (X).

Abstract: There is described a filtering device (1) for systems for supplying gas to internal combustion engines, comprising, integrated in the device, sensor means (10, 11, 12) for detecting the pressure and temperature of the gas being injected into the engine as well as the pressure at the inlet manifold of the engine.

Abstract: The invention relates to an actuation device of a gas distribution valve connected to a burner provided with a control thermocouple of the flame presence, said valve (100) comprising: a gas inlet duct (1); two or more gas delivery ducts (2, 3, 4); gas interception means (8, 10) controlling selectively said inlet duct (1) and said delivery ducts (2, 3, 4), said means can be actuated through axial movement of a stem (5) belonging to said valve; electrical means (6, 7, 101) cooperating with said thermocouple and said interception means of the gas inlet duct. Said device comprises a flexible metal wire (14) sliding inside the sheath and fixed at one end (141) to said stem (5) of said valve (100) and at the other end (142) to a control lever (20) rotatable relative to a support plane (30) according to discreet positions (21, 22, 23, 24, 25) corresponding to the various positions of said interception means.

Abstract: A flame atmosphere analyzer is described and comprises a tube, in which an air-gas intake and mixing chamber is defined, a gas-supply nozzle, and primary combustion-air supply means opening into the intake chamber, as well as a flame burner comprising at least one flame jet which is in flow communication with the intake and mixing chamber in order to supply an air-gas mixture formed in the chamber. The primary air-supply means comprise at least one duct which has a first end in flow communication with the intake chamber and which is open at the opposite, second end in order to take in primary combustion air in a position remote and at a predetermined distance from the intake chamber in the tube. A water-heating device including the above-mentioned flame atmosphere analyzer is also described.

Abstract: The invention relates to an actuation device of a gas distribution valve connected to a burner provided with a control thermocouple of the flame presence, said valve (100) comprising: a gas inlet duct (1); two or more gas delivery ducts (2, 3, 4); gas interception means (8, 10) controlling selectively said inlet duct (1) and said delivery ducts (2, 3, 4), said means can be actuated through axial movement of a stem (5) belonging to said valve; electrical means (6, 7, 101) cooperating with said thermocouple and said interception means of the gas inlet duct. Said device comprises a flexible metal wire (14) sliding inside the sheath and fixed at one end (141) to said stem (5) of said valve (100) and at the other end (142) to a control lever (20) rotatable relative to a support plane (30) according to discreet positions (21, 22, 23, 24, 25) corresponding to the various positions of said interception means.

Abstract: A flame atmosphere analyzer is described and comprises a tube, in which an air-gas intake and mixing chamber is defined, a gas-supply nozzle, and primary combustion-air supply means opening into the intake chamber, as well as a flame burner comprising at least one flame jet which is in flow communication with the intake and mixing chamber in order to supply an air-gas mixture formed in the chamber. The primary air-supply means comprise at least one duct which has a first end in flow communication with the intake chamber and which is open at the opposite, second end in order to take in primary combustion air in a position remote and at a predetermined distance from the intake chamber in the tube. A water-heating device including the above-mentioned flame atmosphere analyzer is also described.

Abstract: The invention comprises a gas barbecue (1; 20) for grilling food comprising a box-shaped container (2) with a griddle (3) that carries the food being cooked; one or more burners (4) placed underneath said griddle (3), each of which has a gas supply line (5); an ignition device (14) for said one or more burners (4); a main pipeline (6) which is connected to said supply lines (5) for each burner (4), connected to a gas supply source (F) and provided with a cut-off valve (7; 21); the cut-off valve's operation is connected to a timer (8) suited to keeping it open for a pre-set time.

Abstract: A safety and regulation valve unit for a gas installation, particularly a heating installation, comprises a duct through which the fuel can flow between an inlet and at least one outlet. An on-off fuel-valve is interposed in the duct between the inlet and the at least one outlet, and there is a movable device for controlling the valve as well as an actuator acting on the movable device in order to move it towards a first operative position in which it cooperates with the on-off valve in order to put the inlet into communication with the outlet. The actuator comprises a reversible motor with a rotor connected to a male-and-female screw coupling acting on the movable device to translate it towards the first operative position and to control the on-off valve.

Abstract: This invention relates to the operation of unvented gas fired appliances and enhances the safety of effectively controlling the flow of gases to an unvented gas heater, such as gas fired fireplace logs, while enabling a thermostat to control the temperature of the heated area by combining a thermocouple for safety and a thermopile for operation of the thermostat.