1.This product is widely used in power industry on the pipeline with the steam and air medium, served as circulating and shutting-off usage;

2.It is the sealing butterfly valve with the feature of rigid seal and quick-operation;

3.Adopted double-seat type, it carries out rigid bi-direction seal, further more fulfilled the pressure water seal on double seats and packing to stem, which increase the valve reliability;

4.The seal rings are made of special rubber that is resistant to high-temperature and outstanding aging-resistance which will prolong the usage-life;

5.The "T" cross –section seal-ring is suitable for high-speed steam working condition, if adjusting the extent of the seal-ring pressure which will get the optional seal and operation effect;

6.The seal-ring is set on the disc which is not needed to disassemble the valve when replacing the new one.