Patent ID: 6345768
Filing Date: 2002-02-12
Classification: F23N

Abstract:
A control valve for a vessel gas water heater having an ignition knob pressed and turned for opening a magnetic valve and igniting a pilot burner, the magnetic valve maintained open by an electromotive force of a thermocouple heated with a pilot flame, and then, the ignition knob released from being pressed, and turned further for opening a plunger valve to enable the supply of gas to a main burner, and having a sensor rod for contracting and expanding depending on the temperature of hot water in a reservoir to open and close a snap valve and thus proceed and cancel the combustion in the main burner for automatically controlling the temperature of the hot water in the reservoir to a desired level, characterized by:a single governor valve unit arranged in that the positional relationship between a valve and a valve seat of said single governor valve unit is correctly maintained to have a wide range of the flow of gas from a pilot supply to a main supply, thus enabling stable control over both the flow of gas to the main burner and the flow of gas to the pilot burner.