1. The product is designed and manufactured according to the standard, with reasonable structure, excellent performance and beautiful appearance.

2. The middle chamber of the valve adopts a pressure self tightening sealing structure, with better sealing performance. Both ends of the branch pipe are of welded structure. Welding groove can be matched according to standards or user requirements.

3. The sealing surfaces of valve clack and valve seat are made of Stellite cobalt based hard alloy by surfacing welding, which is wear-resistant, high temperature resistant, good scratch resistance and long service life.

4. The valve rod has good corrosion resistance and scratch resistance after tempering and surface nitriding treatment.

5. The stuffing box depth of the valve cover is reasonable, the packing is added with corrosion inhibitor, and the sealing is reliable.