The Three way ball valve is called a bidirectional water supply switching valve (also known as an air reversing switching valve in petrochemical systems) in power plant systems, and is suitable for circulating systems containing liquids, gases, dust, slurry, and solid particle media. For example, the forward and reverse circulation water supply system of the power plant unit cooler. The traditional process piping method achieves cooling positive and negative circulation water supply, which takes up a large space, has high cost, and is cumbersome to operate (Three valves need to be operated for daily switching). The positive water supply valves 1 and 3 are opened, while valves 2 and 4 are closed; Reverse water supply valves 2 and 4 open, and valves 1 and 3 close. Replacing the working principle of the process manifold and valve group with a four way ball valve simplifies the program, facilitates operation, reduces costs, facilitates control, and has good synchronization.
Structural characteristics
1. Designed for the specific process of supplying water to the front and back of the power system cooler, with applicable and reliable functions;
2. The top mounted fixed ball four sided seat valve core structure has good sealing performance, resistance to sand particle wear, and long service life;
3. Electric and pneumatic operation (can be switched to manual operation if necessary);
4. Convenient for controlling the information channel and operation interface between the control box and the valve, as well as between the upper computer; And can achieve automatic switching of positive and negative water supply at a time interval according to process requirements.
Standards and specifications
Design standard: GB/T12237
Structure length: GB/T12221
Flange size: GB/T9113
