1. The product has reasonable structure, reliable sealing, excellent performance and beautiful shape.

2. Its sealing is achieved by the sealing surface around the card sleeve. Unique 360° metal lip guarantee fixed sleeve.

3. The valve has no cavity for medium accumulation.

4. The metal lip provides self-cleaning function when rotating, which is suitable for viscous and easy scaling conditions.

5. Two-way flow, more convenient installation and use.

6. The material and flange size of the parts can be reasonably selected according to the actual working conditions or user requirements to meet various engineering needs.