Hot gaseous welder system and method

A heated gaseous welder system comprising:

• a welding tool;
• and
• a welder control unit comprising a gaseous control system, wherein the gaseous control system comprises;
• a first inlet and a first valve, wherein a first gas flow path for a first gas is defined between the first inlet and the first valve;
• a second inlet and a second valve, wherein a second gas flow path for a second gas is defined between the second inlet and the second valve, and wherein, upstream from an outlet, the second gas flow path is disconnected from the first gas flow path;
• the outlet, wherein a joint gas flow path is defined between the outlet and both of the first valve and the second valve, wherein the joint gas flow path is separate from the first gas flow path and the second gas flow path;
• and
• a controller communicatively coupled to the first valve and the second valve,
• wherein the controller is configured to selectively position the first valve between a closed position and an open position, wherein, in the open position, the first gas flow path is fluidly connected to the joint gas flow path such that the first gas is flowable along the first gas flow path and the joint gas flow path from the first inlet to the outlet,
• wherein the controller is configured to selectively position the second valve between a closed position and an open position, wherein in the open position, the second gas flow path is fluidly connected to the joint gas flow path such that the second gas is flowable along the second gas flow path and the joint gas flow path from the second inlet to the outlet,
• wherein the first valve is biased towards the open position and the second valve is biased towards the closed position, and
• wherein the welding tool is fluidly connected to the outlet such that a tool gas pathway is defined between the outlet and the welding tool.