 |
Metal Sealed Butterfly Valve |
Description
Triple offset design prevents galling and scratches between the metal seat and the metal disc due to its unique design. The only time where the seal comes into contact with the seat is at the point of complete closure. Triple offset valves are generally used in applications which require bi-directional tight shut-off in oil and gas, LNG/NPG terminal and tanks, chemical factories, and shipbuilding. Widely used for dirty/heavy oil to prevent extrusion.
a. Multi-layer hard seal butterfly valve: the seal surface adopts multilayer sheet of metal and composite seal, triple–dimension design, the seal surface is of ellipse shape, which solves the problem of irrational structure of conventional valves, and the opening torque is 1/3 of the conventional one.
b. All metal hard seal butterfly valve: the disc is of intergrative metal processed by high-precision machinery. Plastic deformation will not come out under the condition of high temperature and high pressure. And there is no phenomenon of punching stress, welding stress, elastic annealing and brittle rupture.
High Performance Butterfly Valve Metal Sealed Butterfly Valve Wafer Lug Butterfly Valve Flanged Butterfly Valve Butt-Welded Butterfly Valve Flexible Butterfly Valve Eccentric Butterfly Valve