Provided is a method for multi-supplying gas, the method comprising: installing a control valve and an flow meter on each of a plurality of branch lines branched from a main supply line, in which one or more gases are supplied, and supplying the gas; and providing the gas by adjusting flow of the gas by a controller connected to each of the control valve and the flow meter, wherein the controller has a first control manner, which controls each of the control valves based on a rate of flow measured by the flow meter to required portion flow for each branch line, and the first control manner adjusts an open rate of the control valve if the rate of the measured flow to the required portion flow is not within a predetermined range, and a unit of adjusting the control valve increases or decreases according to a difference between the measured flow and the required portion flow.

A heating installation or cooling installation mixing device has a valve housing (14) including a first flow path from a first connection (A-B) to a second connection (A), and a second flow path from the first connection (A-B) to a third connection (B). A movable valve element (24), arranged inside the valve housing (14) in the flow paths, is configured to vary a ratio of cross sections of the flow paths. A valve element drive (36) is arranged on the valve housing (14) and includes an internal control device (38) for movement control of the drive (36) and includes a first communication interface (44) for external control device (40) communication and a second communication interface (46). An internal sensor (48, 50) is arranged in or on the valve housing (14) and is connected to the first communication interface (44) for transmitting a sensor signal to the external control device (40).

Described herein is a flow divider that has two chambers defined by two diaphragms and a spool disposed through the diaphragms. The spool has two tapered nozzles that extend into outlets from each chamber. Within the spool are orifices for providing fluid communication from an inlet to each chamber and dividing the flow. The flow divider generally maintains consistent flow to each outlet even when there is downstream backpressure by being able to move away from the outlet with the increased pressure to further drive the opposite nozzle into the other outlet to reduce the flow at the other outlet to balance the pressure at each outlet.

Provided is a method for multi-supplying gas, the method comprising: installing a control valve and an flow meter on each of a plurality of branch lines branched from a main supply line, in which one or more gases are supplied, and supplying the gas; and providing the gas by adjusting flow of the gas by a controller connected to each of the control valve and the flow meter, wherein the controller has a first control manner, which controls each of the control valves based on a rate of flow measured by the flow meter to required portion flow for each branch line, and the first control manner adjusts an open rate of the control valve if the rate of the measured flow to the required portion flow is not within a predetermined range, and a unit of adjusting the control valve increases or decreases according to a difference between the measured flow and the required portion flow.

A heating system can include certain pressure sensitive features. These features can be configured to change from a first position to a second position based on a pressure of a fuel flowing into the feature. These features can include, fuel selector valves, pressure regulators, burner nozzles, and oxygen depletion sensor nozzles, among other features.

Described herein is a flow divider that has two chambers defined by two diaphragms and a spool disposed through the diaphragms. The spool has two tapered nozzles that extend into outlets from each chamber. Within the spool are orifices for providing fluid communication from an inlet to each chamber and dividing the flow. The flow divider generally maintains consistent flow to each outlet even when there is downstream backpressure by being able to move away from the outlet with the increased pressure to further drive the opposite nozzle into the other outlet to reduce the flow at the other outlet to balance the pressure at each outlet.