1 double blocking and emissions: Trunnion Mounted ball valves spring preload floating seat, regardless of when the valve is fully open or fully closed state, on the downstream side of the valve seat to block fluid, body cavity through the discharge valve retentate drain.
2, automatic pressure relief function: the valve body cavity remain medium temperature caused when abnormal pressure, without going through the safety valve, and can function alone automatic pressure relief valve, which valve to ensure safety in the transportation of liquid medium very important.
3, fire safety structure: valves are equipped with fire safety features, its design and manufacture are to follow API 607 and API 6FA specifications.
advantage
1, the sealing grease Emergency Ambulance: Due to foreign matter or medium fire accidents caused by failure of the valve seat seal, greasing valve provides a fast connection to the grease gun, pump quickly and easily import sealant is injected into the seating area, alleviate leakage.
2, reliable stem sealing and low operating torque: In addition to setting the standard outer sealing ring, packing gland also set O-ring seal to ensure a double stem seal reliability; addition of graphite filler and sealant stem leakage after injection so that the fire to a minimum. Stem sliding bearings and thrust bearings so that the valve is easy to operate.
3, full bore or reduced diameter: may need to use full bore or reduced diameter structure. Full Bore Valve flow aperture consistent with the internal diameter of the pipeline, the pipeline to facilitate cleaning.
4, the valve stem can be lengthened: required installation or operation, the valve stem can be lengthened. Plus pole ball, especially for city gas and other needs of underground pipeline laying the occasion. Extended stem size is determined according to customer needs.
5, flexible operation: the use of having a small coefficient of friction and good self-lubricating bearings of the valve seat and the valve stem, greatly reducing the valve operating torque. Therefore, even without providing a seal grease circumstances, it can be flexible and comfortable for long-term operation of the valve.
Trunnion ball valves Applications
Trunnion Mounted ball valve suitable for Class150 ~ Class1500, PN16 ~ PN100, JIS 10K ~ various pipeline JIS 20K, suitable temperature: -196 ~ 350 ℃, used to cut off or connected line of medium, use of different materials, can be respectively, for conveying water, steam, oil, nitric acid, acetic acid, oxidizing medium, urea, etc., are widely used in petroleum refining, long-distance pipelines, chemical, paper, pharmaceuticals, water, electricity, municipal services, and steel. Trunnion Mounted ball valve driven approach to worm gear, manual, pneumatic or electric. Usually Trunnion Mounted ball valve flange connection, welded connection can also be used.
This is from China Ball Valves website support:Trunnion Mounted ball valves Features and Applications
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