Sealed by torsion
Triple-offset on/off with no friction
Zero leakage at bi-directional
High-temperature and ultra-low temperature both optional
Soft-seated and metal-seated optional
Anti-blow-out stem design
Low on/off operating torque

Pressure Rating:  CLASS 150~ CLASS 1500 (PN10~PN260)
Size:  3〞~160〞 （DN80~DN4000）
Temperature Range: -196℃～850℃
Body material：A105，F304，duplex ,Hastelloy，Inconel， Monel，Alloy20，Incoloy，Ti 等 
Disc material：A105，F304，duplex,Hastelloy，Inconel， Monel，Alloy20，Incoloy等 
Seat material：PTFE，EPDM-A，，STL
Operating mode：manual, pneumatic, electric, hydraulic