Pneumatic flow and pressure regulating valve

The utility model provides a pneumatic flow regulating and pressure regulating valve, which relates to the technical field of pneumatic flow regulating and pressure regulating valves, and comprises a valve body, a valve rod and a pneumatic head, the front end of the valve body is provided with an inlet, the middle of the front part in the valve body is provided with a front conveying channel, the rear end of the valve body is provided with an outlet, and the middle of the rear part in the valve body is provided with a rear conveying channel. A pneumatic head is arranged in the middle of the upper end of the valve body, and a valve rod is telescopically and movably arranged in the pneumatic head; a front partition plate is fixed to the front portion in the valve body, a front valve port is formed in the center of the front partition plate, and the inlet, the front conveying channel and the front valve port are communicated. A rear partition plate is arranged on the rear portion in the valve body, a rear valve