A portable heater includes a housing enclosing a combustion region, a first connector for connecting with a fuel source, a first supply line in fluid connection with the first connector for supplying fuel to the combustion region when the fuel source is connected with the first connector, a second supply line in fluid connection with a second connector for supplying fuel to a fuel-fired accessory when the fuel source is connected with the first connector and the fuel-fired accessory is connected with the second connector, and a valve arrangement operable to selectively supply fuel to the first and second supply lines when the fuel source is connected with the first connector.

A premixing apparatus includes a mixing unit, an air supply adjusting unit, and a gas switching unit. The mixing unit draws a fuel gas in the mixing unit by supplied air to mix the fuel gas and the supplied air with each other. The air supply adjusting unit applies a load on the supplied air flowing toward the mixing unit and switches the load. The gas switching unit switches a gas amount of the fuel gas to be supplied to the mixing unit.

A regulating valve with at least one gas outlet conduit and a housing having at least one outlet hole in fluid communication with the outlet conduit; a rotating disc arranged in the housing; a spring axially retaining the rotating disc in the housing; and sealing means surrounding the at least one outlet hole. The sealing means includes a gasket having a closure member associated with each outlet hole, surrounding the same, and at least one attachment arm attached to the at least one closure member. The attachment arm including at least one protuberance, with the rotating disc being supported on the closure members and on the protuberances when it presses on the gasket.

Systems and methods for remotely monitoring the amount of fuel in one or more fuel tanks are disclosed. A fuel monitoring device includes a sensor configured to monitor the operation of a valve coupled to an output of a fuel tank and a network and communication system configured to receive data from the sensor related to the operation of the valve and establish communication with one or more remote systems via a communications network. The fuel monitoring device communicates the data related to the operation of the sensor to a remote server system via the communications network. Based on the data received from the fuel monitoring device and one or more remote systems, the remote server system can determine the amount of fuel remaining in the tank, and can predict when the tank will require additional fuel.

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 fluid injection system can include a main flow line, a primary flow line connected to the main flow line, and a primary flow valve disposed between the primary flow line and the main flow line and configured to allow injectant flow to the primary flow line from the main flow line in an open primary flow valve state, and to prevent injectant flow to the primary flow line from the main flow line in a closed primary flow valve state. The system can include a secondary flow line connected to the main flow line and a secondary flow valve disposed between the secondary flow line and the main flow line and configured to selectively allow injectant flow to the secondary flow line from the main flow line in an open secondary flow valve state, and to prevent injectant flow to the secondary flow line from the main flow line in a closed secondary flow valve state. The system can include a primary purge branch configured and a secondary purge branch configured to be in fluid communication with a purge gas line to receive a purge gas flow from the purge gas line.

Regulating valve for a gas cooking appliance, comprising a valve body with an inlet conduit and at least one outlet conduit, and a rotating disc arranged between the inlet conduit and the outlet conduit, comprising a plurality of connecting holes for regulating the gas flow, more than one connecting hole overlapping with an outlet hole of the outlet conduit, and the rotating disc comprising a main series of connecting holes increasing in size in the direction of increasing gas flow. There is an intercalated hole between successive holes of the main series and after each hole of the main series, the size of each intercalated hole being smaller than the size of the preceding contiguous hole of the main series.

An inlet body for a fluid injector for a turbomachine. The inlet body includes a casing defined by an internal surface and a seal valve housed inside the casing. The valve includes a sealing member including an intake duct, and internal duct into which the intake duct opens, and a seat for the sealing member. The seat defines an opening over a fluid path towards the internal duct. The internal surface includes a recess which defines at least partially a chamber communicating with the opening and with the intake duct.

Systems and methods for remotely monitoring the amount of fuel in one or more fuel tanks are disclosed. A fuel monitoring device includes a sensor configured to monitor the operation of a valve coupled to an output of a fuel tank and a network and communication system configured to receive data from the sensor related to the operation of the valve and establish communication with one or more remote systems via a communications network. The fuel monitoring device communicates the data related to the operation of the sensor to a remote server system via the communications network. Based on the data received from the fuel monitoring device and one or more remote systems, the remote server system can determine the amount of fuel remaining in the tank, and can predict when the tank will require additional fuel.

A fuel gas manifold comprises a manifold body configured to fluidically couple to a fuel gas source. The manifold body comprises a central body having a first end and a second end, wherein the central body has a first internal diameter. The manifold body also comprises a plurality of branch line take-off pipes coupled to the central body. The internal diameter of each of the plurality of branch line take-off pipes is smaller than the first internal diameter, the plurality of branch line take-off pipes are coupled to the manifold body such that the longitudinal axes of each of the plurality of the branch line take-off pipes is substantially perpendicular to the longitudinal axis of the central body, and each of the plurality of branch line take-off pipes is configured to fluidically couple the manifold body to a branch line corresponding to one or more fuel gas consuming assets. The fuel gas manifold also comprises a manifold coupler attached to the first end of the manifold body, wherein the manifold coupler is operable to fluidically couple the manifold body to a fuel gas feed line. The fuel gas manifold also comprises a branch line coupler coupled to each branch line take-off pipe by a branch line valve, wherein each branch line coupler is operable to couple to a corresponding branch line.