Rotary flow control valve zero position adjusting device

The invention discloses a rotary flow control valve zero position adjusting device which comprises a fixed chassis, an adjusting turntable, fixed screws, adjusting screws and pressing blocks. The fixed chassis presses two end faces fixed to a rotary flow control valve through the fixed screws. The adjusting turntable is placed on the fixed chassis and can rotate relative to the chassis. A motor onthe rotary flow control valve and the adjusting turntable are tightly fixed by the adjusting screws and the pressing blocks such that the motor can rotate synchronously with the adjusting turntable relative to the chassis. Both the adjusting turntable and the fixed chassis are provided with scale lines and the rotating angles of the turntable and the motor can be read. According to the rotary flow control valve zero position adjusting device, the accuracy of the valve zero position adjustment is effectively improved, and the device has the advantages of simple structure, easy operation, low cost and high versatility.