What Are The Conveniences Of Using A Lined Ball Valve?
The Lined Ball Valve features a dual block and bleed function with a spring-loaded floating seat. Whether the valve is fully open or fully closed, the upstream and downstream seats block flow, allowing retained fluid in the valve body to drain through the bleed valve.
The automatic pressure relief function automatically relieves pressure from abnormally high pressure caused by a temperature rise in the valve body cavity, bypassing the safety valve. This is crucial for ensuring the safety of the valve when conveying liquid media.
The valve is fire-safe. Its design and manufacturing comply with API 607 and API 6FA specifications.
Emergency grease injection: In the event of unexpected seat seal failure due to foreign matter in the medium or fire, the grease injection valve features a quick-connect grease gun for quick and easy injection of sealing grease into the seat seal to alleviate leaks. Reliable stem sealing and low operating torque are achieved through the use of a standard sealing ferrule and an O-ring seal on the packing gland. This double seal ensures stem sealing reliability. Graphite packing and sealing grease injection minimize stem leakage after a fire.
The stem sliding bearing and thrust bearing ensure easy operation. Full-bore or reduced-bore configurations are available as needed. The full-bore valve's flow aperture aligns with the pipeline's inner diameter, facilitating pipeline cleaning.
The stem can be extended to meet installation or operational requirements. Extended-stem ball valves are particularly suitable for applications requiring buried pipelines, such as city gas. Extended stem dimensions are custom-designed.
Flexible operation is achieved through the use of low-friction, self-lubricating seats and stem bearings, significantly reducing operating torque. This ensures smooth and reliable valve operation even without sealing grease. Multiple drive modes for easy automation. Flexible drive modes allow for manual, pneumatic, electric, gas-hydraulic, and hydraulic operation depending on your needs.
