The Flow Control Valve has a cutting function, which can cut off debris (branches, textile bags, etc.) in the medium when closed to ensure the normal opening and closing of the valve.
1. The Flow
Control Valve is composed of main components such as a valve body, an eccentric shaft, a valve cover, a ball crown, a sleeve, and a valve seat. The valve is opened and closed by rotating the eccentric shaft 90° to cut off the medium.
2. The Flow Control Valve ensures that there is no friction between the valve seat and the ball crown during the opening or closing process of the valve. The Flow Control Valve uses an eccentric crankshaft to deviate from the center line of the ball crown and the center line of the valve flow channel by an eccentric distance. When the valve is opened, the crankshaft rotates through a small angle, and the ball crown will leave the valve seat, and the ball crown and the valve seat will no longer be in contact; conversely, during the valve closing process, only at the closing moment, the ball crown will be in contact with the valve seat. touch.
3. The Flow Control Valve adopts a top-mounted structure. During the maintenance process, there is no need to disassemble it from the pipeline. You only need to remove the bolts on the valve cover and remove the valve cover to take out the eccentric shaft. This ensures that the valve can be online. repair.
4. The Flow Control Valve should ensure that the flow channel is completely unobstructed when it is opened, and the water head loss is small during operation. The ball adopts a semicircular channel, which has good flow performance and linear adjustment performance, and impurities will not be deposited in the middle cavity of the valve body.
5. The Flow Control Valve should have sufficient strength. The eccentric crankshaft adopts a fixed ball structure without any vibration at high flow rates. The shell test is performed in accordance with the national standard GB13927-1992.
6. The Flow Control Valve is not allowed to leak, and the upper and lower shaft ends should be sealed with at least two O-rings.
7. The Flow Control Valve has a cutting function, which can cut off debris (branches, textile bags, etc.) in the medium when closing to ensure the normal opening and closing of the valve.
