A distributed fuel module includes a fuel pressure vessel with a gas port and a fuel port, a hydraulic circuit breaker connected to the fuel port, and a gaseous circuit breaker. The gaseous circuit breaker is connected to the gas port, is fluidly coupled to the hydraulic circuit breaker through the fuel pressure vessel, and is cooperatively associated with the gaseous circuit breaker to isolate the fuel pressure vessel from a compressed gas header and a fuel header according to pressure differential within the hydraulic circuit breaker and pressure differential within the gaseous circuit breaker. Power modules and methods of controlling fuel flow in fuel modules are also described.

A heater structure includes a heater body including a burner connected to a valve switch. A pilot fire assembly is covered by a protective cover that has ventilation holes. A switch unit includes an ignition switch, a shut-down switch, an ignition operator, and a shut-down operator. The ignition operator and the shut-down operator are structured to provide a swingable arrangement. The ignition operator may be operated to contact and press the fuel gas valve rod and the ignition switch to open the valve switch for supply fuel gas to the burner and to activate an ignition circuit to cause successive shootings of an ignition pin of the pilot fire assembly to set a flame on the burner. The shut-down operator is operated to contact and press the shut-down switch, so as to cut off a signal of the thermocouple and thus cut off the supply of the fuel gas.

A heater structure includes a heater body including a burner connected to a valve switch. A pilot fire assembly is covered by a protective cover that has ventilation holes. A switch unit includes an ignition switch, a shut-down switch, an ignition operator, and a shut-down operator. The ignition operator and the shut-down operator are structured to provide a swingable arrangement. The ignition operator may be operated to contact and press the fuel gas valve rod and the ignition switch to open the valve switch for supply fuel gas to the burner and to activate an ignition circuit to cause successive shootings of an ignition pin of the pilot fire assembly to set a flame on the burner. The shut-down operator is operated to contact and press the shut-down switch, so as to cut off a signal of the thermocouple and thus cut off the supply of the fuel gas.

A heating system can include a supply piping assembly configured to supply either a first fuel or a second fuel to at least one main burner, a first pilot burner and a second pilot burner. First and second electromagnetic valves can be operatively connected to an electrical power supply and at least one of the thermocouples. The first and second electromagnetic valves can be configured to permit and prevent the fuel from reaching at least one of the first pilot burner, the second pilot burner and the at least one main burner depending upon thermoelectric potential received from the at least one of the thermocouples.

A mechanical valve assembly for the control of a gas flow to a gas appliance. The mechanical valve assembly includes at least one input knob movably connected to a housing, a shaft assembly connected to at least one input knob, and a manually-operated valve located inside the housing and in between the inlet port and the outlet port. The manually-operated valve is mechanically connected to the shaft assembly, and the manually-operated valve is configured for opening and closing a gas flow between the inlet port and the outlet port.

Systems and methods for leak detection and remote, non-intrusive, automatic shutoff in residential regulators are provided. Such systems and methods can include a shutoff device that includes a mounting bracket for mounting on a supply container, a linking device for coupling to a knob of a valve of a regulator of the supply container, and an actuator for, responsive to a control signal, automatically rotating the linking device, which rotates the knob, which rotates the valve from an on position to an off position. In some embodiments, a leak sensor can detect a presence of a fuel leak and, responsive thereto, transmit the control signal to the actuator, and in some embodiments, a position sensor can determine that a current position of the valve is indicative of the on position and, responsive thereto, transmit the control signal to the actuator.

A gas valve unit to be connected to a gas source includes a body having an inlet, a main chamber in the body communicating with the inlet and having a main outlet communicating with the outlet of the gas valve unit, a disc-shaped element in the main chamber with one or more openings putting the main chamber in communication with the main outlet hole and rotatable between a closing position, where the main outlet hole is entirely covered by the disc-shaped element, and at least two opening positions in which the one or more openings face, at least in part, the main outlet hole to enable gas passage from the main chamber to the main outlet hole via the through opening, and a control unit associated causing the snapping rotation of the disc-shaped element between the closing position and an opening position, and between the at least two opening positions.

A gas combustor comprises a gas container, a fuel gas controlling device, a housing, a piezoelectric device and a combustion device. The safety switch is slidably disposed in an opening of the housing and includes a slide member, a fasten member and a passive member, adjacent surfaces of the slide member and the fasten member are disposed with a connecting mechanism and a radial sliding mechanism, thereby enabling the slide member to perform a radial sliding motion towards the left or the right at the front end of the fasten member; a rear surface of the passive member is formed with a lock tenon abutted against a block tenon of the fuel gas controlling device, thereby forming a lucked status; when the slide member is pulled towards the left or the right, the lock tenon is released from the block tenon, thereby forming an unlocked status.

A gas flow controller for use with a gas powered water heater includes a first gas flow valve, and a first gas flow valve actuator assembly connected to the first gas flow valve and configured to hold the first gas flow valve in an open position. The first gas flow valve actuator assembly includes a first electromagnetic actuator, a corrosion resistant material encapsulating the first electromagnetic actuator, a first wire lead connected to the first electromagnetic actuator at a first solder joint, a corrosion resistant material encapsulating the first solder joint, a second wire lead connected to the first electromagnetic actuator at a second solder joint, and a corrosion resistant material encapsulating the second solder joint.

A system and a method is described for remotely controlling gas consumption by a power vented gas-fired water heater to reduce consumption of gas by a consumer connected to a gas distribution bank network of a gas provider during overload periods where gas demand is at a peak. The system comprises a consumer controller in communication with the gas provider whereby the controller can operate a modulating gas control valve either directly or through the control of the fan speed of a power vented blower to reduce the supply of gas to the burner of the gas-fired water heater when asked by the provider to do so. Temperature sensors are associated with the water holding tank of the gas-fired water heater to feed water temperature signals to a computer of the controller whereby to enable the controller to execute informed corrective action for the reduction in gas consumption by regulating the gas control valve to reduce the supply of gas to the burner of the water heater.