1. The design and manufacture of the products meet the requirements of American national standards ANS1B16.34, American BS1873 and other advanced foreign standards.

2. The valve body is barrel shaped or streamline shaped with beautiful appearance. The flow shape is straight through. The fluid resistance is small.

3. The sealing surface of the closing element (disc) and the valve seat is sealed with a cone, which has small closing force, erosion resistance and reliable sealing.

4. The valve seat can be a replaceable valve seat, which can be matched with the materials of the closing sealing surface in any combination to meet the requirements of working conditions and extend the service life.

5. Large diameter, high pressure stop valve adopts lifting rod as the transmission mode of valve stem according to the need of closing force, and is equipped with rolling bearing type and impact handwheel to reduce the closing force.

6. The materials of main body, internals, fillers and fasteners can be reasonably combined according to user requirements or actual working conditions.