1. The seal of the American standard sleeve soft seal plug valve is realized by the sealing surface around the sleeve, unique 360° metal lip protection fixed sleeve;

2. Valve has no cavity for medium accumulation;

3. The metal lip provides self-cleaning function when the cock turns, which is suitable for viscous and easy to scale conditions;

4. Two-way flow, more convenient to use and install;

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