Anti-loose manual precise adjustment flow control valve

The utility model relates to an anti-loose manual precise flow adjustment control valve which comprises an adjusting handle, a locking nut, an adjusting sleeve, a transition cover, a throttling valve element, a valve sleeve, a valve body, a spring and a pressure compensator. The adjusting sleeve is arranged on a transition cover fixed to the valve body through a screw, and the transition cover is connected with the valve sleeve. The valve sleeve is fixed in a valve body hole, the throttling valve element is arranged in a valve sleeve hole, the pressure compensator is arranged at the lower end of the valve sleeve, and the spring is arranged on the throttling valve element. When the adjusting handle is rotated clockwise or anticlockwise, the threads on the adjusting handle and the adjusting sleeve generate relative displacement change, and the throttling valve element is pushed to move up and down. The locking nut with the large diameter increases the anti-locking torque, and locking loosening caused by vibrati