1.Both product design and manufacture follow ANSI B16.34 and E101, leaving a reasonable structure, an excellent performance and a nice modeling.

2.A pressure self-tightening sealing structure is formed with the middle cavity of the valve, the hugher the medium＇s pressure, the better the sealing performance.

3.A welding structure is formed on both ends of the branch pipe so as to suit for different requirements of nipple.

4.The pressure withstand parts of the valve  are made of quality heat resisting alloy steel, good performance of high temperature, high bearable pressure ,durable, safe and reliable.

5.The sealing face of both disc and seat ring is formed by way of built-up welding with stellite Co-based carbide alloy and features wearability, high temperature and corrosion resistance, good anti-scratch performance and a long duration.

6.The disc rotates around the pin shaft outside of the seal ring to reduce severe shock occurring at close.

7.The internally mounted structure of the pin shaft reduces the outward leak and makes use more reliable.