Gas valve with high/low gas pressure detection

A valve assembly for controlling fuel flow to a combustion appliance, the valve assembly comprising:

• a valve body having an inlet port and an outlet port, with a fluid path extending between the inlet port and the outlet port;
• a first valve situated in the fluid path between the inlet port and the outlet port;
• a second valve situated in the fluid path between the inlet port and the outlet port downstream of the first valve, with an intermediate volume between the first valve and the second valve defined by the valve body;
• a first valve actuator, secured relative to the valve body, for selectively moving the first valve between a closed position, which closes the fluid path between the inlet port and the outlet port, and an open position;
• a second valve actuator, secured relative to the valve body, for selectively moving the second valve between a closed position, which closes the fluid path between the inlet port and the outlet port, and an open position;
• a pressure sensor positioned downstream of the second valve, the pressure sensor sensing a pressure in the valve body downstream of the second valve;
• and
• a controller in communication with the pressure sensor, the controller configured to compare a measure, which at least tracks the sensed pressure in the valve body downstream of the second valve, with a first pressure threshold, and to provide a predetermined output signal if the measure surpasses the first pressure threshold.

A valve assembly for controlling fuel flow to a combustion appliance, the valve assembly comprising:

• a valve body having an inlet port and an outlet port, with a fluid path extending between the inlet port and the outlet port;
• a first valve situated in the fluid path between the inlet port and the outlet port;
• a second valve situated in the fluid path between the inlet port and the outlet port downstream of the first valve, with an intermediate volume between the first valve and the second valve defined by the valve body;
• a first valve actuator, secured relative to the valve body, for selectively moving the first valve between a closed position, which closes the fluid path between the inlet port and the outlet port, and an open position;
• a second valve actuator, secured relative to the valve body, for selectively moving the second valve between a closed position, which closes the fluid path between the inlet port and the outlet port, and an open position;
• one or more pressure sensors positioned downstream of the first valve and upstream of the second valve, the pressure sensor sensing a pressure in the intermediate volume of the valve body;
• and
• a controller in communication with the pressure sensor, the controller configured to compare a measure, which at least tracks the sensed pressure in the valve body downstream of the first valve and upstream of the second valve, with a first pressure threshold, and to provide a predetermined output signal if the measure surpasses the first pressure threshold.