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It is designed into trunnion ball structure, the parts which involved relative motion are made of low friction coefficient self-lubricated materials, so that the operating torque is low. In addition, due to the long-term lubricated by grease, makes the valve is much easier to be operated.
It adopts full port or reduced port, so that the flow resistance is low.
The valve has structure of bi-directional metallic removable sealing type, which has function of automatically compensate and self-cleaning, the sealing performance is excellent.
It is designed into trunnion ball structure, furthermore the pre-tension spring is provided, so that the ball valve has function of self-release pressure.
Each ball has two removable seats and they supporting sealing in both directions, thus there is no need to consider the flow direction.
The valve has structure of fire-proof and anti-static. A conductive spring is provided between stem and body, between stem and ball so as to avoid lightening the flammable medium, and then ensures the system safety.
When the fluid medium deposited in the middle cavity has been gasified, where the pressure is exceedingly rising, the medium pushes the force onto the seat to automatically release pressure, so as to ensure valve safety.