The invention relates to gas valve (1) which is designed for use in industrial cooking devices, and has shock absorber system (1.2) used for absorbing shocks and stresses that may occur to the safety valve (1.6) when the valve shaft (1.5) is fully pressed. Shock absorber system (1.2) that is subject of the invention is consisted of; knockout pin (1.2.1) that transmits movement from gas valve (1) shaft (1.5) to safety valve (1.6) and spring (1.2.2) that protects the system by absorbing extra loads from outside from the point where safety valve (1.6) is fully pressed.

Method to calibrate a valve of a gas boiler, the valve (2) having at least one movable calibration element (2a, 2b) in which boiler operating parameters are measured by means of measuring instruments (5), at least one 3D image of the valve (2) is acquired through an optical acquisition means (12), orientation and position of the calibration element (2a, 2b) are identified from the 3D image, a motor-driven tool (13a, 13b), which is couplable to the calibration element (2a, 2b), is moved through an anthropomorphic robot (8) along a path ending with the coupling between the tool (13a, 13b) and the calibration element (2a, 2b) and calculated based on position and orientation of the calibration element (2a, 2b), and the tool (13a, 13b) is operated to adjust the calibration element (2a, 2b) based on the measured parameter so as to carry out an adjustment cycle of the calibration element (2a, 2b).

Regulating valve for a gas cooking appliance comprising a valve body (10) with an inlet conduit (11) and at least one outlet conduit (12), and an inner cavity (13) fluidically communicated with the inlet conduit (11), a rotating disc (20) in contact with an inner cavity (13) of the valve body (10), comprising at least one connection opening for regulating the gas flow between the inner cavity (13) and the outlet conduit (12) by means of rotation, and operating means (40) connected to the rotating disc (20) for rotating it. The valve (100) is adapted for supplying different types of combustible gas, the rotating disc (20) being arranged in a different angular position, depending on the type of gas to be supplied, when the operating means (40) are arranged in a reference position.

Gas type adaption device (10) for a gas burner application, having a housing (12), the housing (12) providing at least two gas inlet orifices (18, 19), wherein each of said gas inlet orifices (18, 19) can selectively be brought in communication with an gas inlet opening of the gas burner application in order to adjust the same to different gas qualities and/or different gas types. The gas type adaption device comprises a gas throttle (26) being positioned within the interior (13) of the housing (12), namely seen in flow direction of the gas between each of the gas inlet orifices (18, 19) of the housing (12) and an outlet opening (21) of the housing, wherein the relative position of the gas throttle (26) defines the effective outlet cross section of the outlet opening (21) there-by providing a fine-adjustment of the gas type adaption device to different gas qualities and/or different gas types.

Gas appliance comprising a shut-off valve (100) and a control unit electrically operating the shut-off valve (100). The shut-off valve (100) comprises a closure orifice (110), a closure member (120) to open and close the gas passage, an electromagnetic actuator (130) comprising a movable assembly (131) attached to the closure member (120), the closure member (120) moving integrally with the movable assembly (131), and electromagnetic means (137) magnetically associated with the movable assembly (131), and a manual actuator (140) for moving the movable assembly (131), said manual actuator (140) comprising an open position in which it is decoupled from the movable assembly (131), the electromagnetic actuator (130) thus being able to act on the closure member (120) to cause its closure.

The present invention provides a novel gas flow control device for a gas stove and a gas stove. A gas flow control device for a gas stove provided by the present invention includes a drive device (12), a valve body (1), a rotating portion (2), a reposition device (3), and a spool (4, 5); the valve body includes an inner cavity (6), a gas inlet (7), and a gas outlet, and the gas inlet and the gas outlet are separately in communication with the inner cavity; the spool is disposed in the inner cavity; the drive device is used to drive the rotating portion to rotate; when the rotating portion is located in a first rotation position, the spool is pushed by the rotating portion to close the gas outlet; and when the rotating portion is located in a second rotation position, the spool, under the action of the reposition device, opens the gas outlet. By adopting the technical solution, the number of levels of the gas stove can be easily increased

Servo gas system (11) realised as a modified hydraulic Wheatstone bridge for a gas burner (10), namely for controlling a pressure regulation valve (20) positioned in a gas duct (18) of the gas burner, thereby controlling a pressure difference between a pressure (P1) in a burner chamber (12) of the gas burner and the gas pressure (P6) within the gas duct (18). The hydraulic Wheatstone bridge embodiment comprises a static servo gas flow branch (28) and a dynamic servo gas flow branch (29) being connected in parallel, a flow sensing element (30) being connected between the static servo gas flow branch (28) and the dynamic servo gas flow branch (29) and providing a signal used to control the pressure regulation valve (20) by an electric actuator (41). The static servo gas flow branch (29) comprises a first (32) and a second flow restricting device (33) in serial connection. The dynamic gas flow branch (29) comprises a pressure regulator (37) and downstream of the pressure regulator (37) a third flow restricting device (38) in serial connection. The flow sensing element (30) is connected to the connection between the two flow restricting devices (32, 33) of the static servo gas flow branch (28) and to the connection between the pressure regulator (37) and the third flow restricting device (38) of the dynamic servo gas flow branch (29). The pressure regulator (37) is further connected to a reference pressure, preferably the combustion chamber pressure (P1).