The cooking appliance (1) having a control panel (2) is equipped with one or more gas flow (Q) regulating valves, wherein the rotary regulating plug (6) is provided with various peripheral through holes (16-19). The control knob (9) being interchangeable for fitting to the actuating shaft (7), is ch
The cooking appliance (1) having a control panel (2) is equipped with one or more gas flow (Q) regulating valves, wherein the rotary regulating plug (6) is provided with various peripheral through holes (16-19). The control knob (9) being interchangeable for fitting to the actuating shaft (7), is chosen from the two units available, one and the other permitting different angular limit positions of the regulating plug (6) for the supply of a constant minimum gas flow Qmin, adjusted each one for a different type of gas N gas or LP gas. The outlet conduit (5) of the valve is equipped with a further injector nozzle (21,23) for adjusting a constant gas flow Qmax to be fed into the conduit (25) of the correspondent burner, when the cooking appliance is supplied with a LP gas.A valve adapted to regulate the flow of both a natural gas and a liquefied petroleum gas. According to one implementation the valve includes a valve body having a rotatable regulating organ positioned between a valve inlet and a valve outlet, the valve outlet having a first restriction and a second restriction successive to the first restriction, the first restriction including a first hole calibrated to provide a given maximum flow rate of the natural gas at a first pressure in the absence of the second restriction, the second restriction removeably attached to the valve outlet, the second restriction including a second hole calibrated to provide a given maximum flow rate of the liquefied petroleum gas at a second pressure.
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1. A valve comprising: a valve body having a rotatable regulating organ positioned between a valve inlet and a valve outlet, the regulating organ configured to vary the flow rate of the gaseous fuel at the valve outlet as a function of an angular position of the regulating organ, a first angular pos
1. A valve comprising: a valve body having a rotatable regulating organ positioned between a valve inlet and a valve outlet, the regulating organ configured to vary the flow rate of the gaseous fuel at the valve outlet as a function of an angular position of the regulating organ, a first angular position of the regulating organ determines a first minimum flow rate of a natural gas, and a second angular position of the regulating organ, successive to the first angular position, determines a second minimum flow rate of a liquefied petroleum gas,a control knob used to manipulate the angular position of the regulating organ coupled to the regulating organ by an actuating shaft, the control knob having a feature to prevent rotation of the regulating organ beyond the first angular position, absent the presence of the feature on the control knob the regulating organ is rotatable to the second angular position,the valve outlet having a restriction that determines a maximum flow rate of the natural gas. 2. A gas burning appliance adapted for a supply of natural gas and liquefied petroleum gas to a burner comprising: at least one regulating valve with a valve body, the valve body having a rotatable regulating organ operationally coupled to an actuating shaft that protrudes from a control panel of the cooking appliance, the regulating organ positioned between a valve inlet and a valve outlet and configured to vary the flow rate of the gaseous fuel at the valve outlet as a function of an angular position of the regulating organ, a first angular position of the regulating organ determining a first minimum flow rate of the natural gas, and a second angular position of the regulating organ, successive to the first angular position, determining a second minimum flow rate of the liquefied petroleum gas,a control knob attached to the actuating shaft useable to manipulate the angular position of the regulating organ, the control knob having a feature that cooperates with a part of the appliance other than the valve to prevent rotation of the regulating organ beyond the first angular position, the regulating organ rotatable to the second angular position successive to the first angular position absent the presence of the feature on the control knob,the valve outlet having a restriction that determines a maximum flow rate of the natural gas. 3. The gas burning appliance of claim 2 wherein the feature of the control knob projects from a base of the control knob facing the control panel and travels within a groove in the control panel, the groove having an end corresponding to the first angular position. 4. The gas burning appliance of claim 2 wherein the actuating shaft has associated with it an engagement feature that cooperates with a part of the valve to impede rotation of the regulating organ beyond the second angular position. 5. A valve adapted to regulate the flow of both a natural gas and a liquefied petroleum gas comprising: a valve body having disposed therein a rotatable regulating organ positioned between a valve inlet and a valve outlet, the valve outlet having a first restriction and a second restriction successive to the first restriction, the first restriction comprising a first hole calibrated to provide a given maximum flow rate of the natural gas at a first pressure in the absence of the second restriction, the second restriction removeably attached to the valve outlet, the second restriction comprising a second hole calibrated to provide a given maximum flow rate of the liquefied petroleum gas at a second pressure, the second hole being smaller than the first hole, the regulating organ being configured to vary the flow rate of the gaseous fuel at the valve outlet as a function of an angular position of the regulating organ, a first angular position of the regulating organ determines a first minimum flow rate of the natural gas, and a second angular position of the regulating organ, successive to the first angular position, determines a second minimum flow rate of the liquefied petroleum gas, the valve further comprising a stop that prevents rotation of the regulating organ beyond the second angular position. 6. The valve according to claim 5, wherein the first restriction is formed within a press-in disc that is pressed in the valve outlet. 7. The valve according to claim 6, wherein the first restriction is formed within a press-in disc that is pressed in the valve outlet. 8. The valve according to claim 6, wherein the first restriction is formed within a threaded disc that is threaded in the valve outlet. 9. The valve according to claim 5, wherein the first restriction is formed within a press-in disc that is pressed in the valve outlet. 10. The valve according to claim 5, wherein the first restriction is formed within a threaded disc that is threaded in the valve outlet. 11. The valve according to claim 5, further comprising a control knob used to manipulate the angular position of the regulating organ coupled to the regulating organ by an actuating shaft, the control knob having a feature to prevent rotation of the regulating organ beyond the first angular position, absent the presence of the feature on the control knob the regulating organ is rotatable to the second angular position. 12. A gas burning appliance adapted for a supply of natural gas and liquefied petroleum gas to a burner, the gas burning appliance comprising: at least one regulating valve with a valve body, the valve body having disposed therein a rotatable regulating organ operationally coupled to an actuating shaft that protrudes from a control panel of the cooking appliance, the rotatable regulating organ positioned between a valve inlet and a valve outlet, the valve outlet being in fluid communication with the burner,the valve outlet having a first restriction and a second restriction successive to the first restriction, the first restriction comprising a first hole calibrated to provide a given maximum flow rate of the natural gas at a first pressure in the absence of the second restriction, the second restriction removeably attached to the valve outlet, the second restriction comprising a second hole calibrated to provide a given maximum flow rate of the liquefied petroleum gas at a second pressure, the second hole being smaller than the first hole, the regulating organ being configured to vary the flow rate of the gaseous fuel at the valve outlet as a function of an angular position of the regulating organ, a first angular position of the regulating organ determines a first minimum flow rate of a natural gas, and a second angular position of the regulating organ, successive to the first angular position, determines a second minimum flow rate of a liquefied petroleum gas, the valve further comprising a stop that prevents rotation of the regulating organ beyond the second angular position. 13. The gas burning appliance according to claim 12, wherein the second restriction is removeably attached to the valve outlet by a threaded connection. 14. The gas burning appliance according to claim 13, wherein the first restriction is formed within a press-in disc that is pressed in the valve outlet. 15. The gas burning appliance according to claim 13, wherein the first restriction is formed within a threaded disc that is threaded in the valve outlet. 16. The gas burning appliance according to claim 12, wherein the first restriction is formed within a press-in disc that is pressed in the valve outlet. 17. The gas burning appliance according to claim 12, wherein the first restriction is formed within a threaded disc that is threaded in the valve outlet. 18. The gas burning appliance according to claim 12, further comprising a control knob attached to the actuating shaft useable to manipulate the angular position of the regulating organ, the control knob having a feature that cooperates with a part of the appliance other than the valve to prevent rotation of the regulating organ beyond the first angular position, the regulating organ rotatable to the second angular position successive to the first angular position absent the presence of the feature on the control knob. 19. The gas burning appliance according to claim 18, wherein the feature of the control knob projects from a base of the control knob facing the control panel and travels within a groove in the control panel, the groove having an end corresponding to the first angular position.
Dietiker Paul (Redondo Beach CA) Nelson Marvin D. (St. Louis Park MN), Fluid pressure regulating valve having adjustable two-stage and natural-LP gas changeover capabilities.
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