1. It is used as vent valve at pipe end, with reliable performance.

2. The valve seat sealing ring and the valve body are organically combined to achieve a long service life of the valve.

3. The two-way sealing performance is excellent and the torque value is small.

4. The flow characteristics tend to be straight and the regulation performance is good.

5. Flange connection is convenient for installation, both vertical and horizontal.

6. The materials of sealing pairs are diverse and can be selected by users.