Multi-gear control gas circuit valve, supply device and supply system

The invention discloses a multi-gear control gas circuit valve which comprises an exhaust control. The valve body is provided with a fluid channel and an exhaust channel, and the exhaust control is arranged in the exhaust channel; the valve element assembly is installed in the fluid channel so as to control the fluid channel to be switched between a communicating state and a sealing state, in the inflation mode, the valve element assembly controls the fluid channel to be in the communicating state and abuts against and opens the exhaust control piece, so that the exhaust channel is in the ventilation state, and meanwhile the valve element assembly is in the sealing state. The invention further discloses a supply device applying the multi-gear control gas circuit valve and a supply system applying the supply device, and the purpose of timely exhausting air and residual gas under the condition of repeated filling of new fuel is achieved. 本发明公开了一种多挡位控制气路阀门，包括排气控件；阀体本体，阀体本体上具有流体通道和排气通道，排气控件设置于排气通道；阀芯组件，阀芯组件安装于流体通