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Help CenterHigh-Performance Eccentric Half Ball Valve, Double Flange End, Top-mounted Eccentric Half Ball Valve
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1) Description
Eccentric ball valve is the metal ball crown and fixed on the eccentric shaft, eccentric crankshaft rotation, opening and closing of the valve. Contact with the metal ball crown sealing surface of metal seated in axial and radial floating, to compensate the mismatch error of spherical cap and valve seat. The structure of simple, reliable and effective way of seal to make it not but can be an advantage to replace other valves, and can be applied to they do not use the system, such as power plants, metallurgy, cement, paper and other industries of coal powder, ash, such as pulp material pipeline sealing surface can adopt different sealing material to apply various working environment.
2) Features
1. Eccentric crankshaft and hemispherical structure
Using the eccentric principle, namely the valve port different heart center and crankshaft principle. In the process of closing, the valve ball crown gradually to the seat. At the moment close to achieve reliable seal, avoid the valve opening and closing process remain the state of friction pair of seal, valve ball for hemispherical. Open the valve ball crown hidden in valve cavity, from medium appropriate sealing wash set;At the same time to ensure the valve full flow channel circulation, the maximum eye degree to reduce the energy loss, head loss is almost zero.
2. Small installation space
The installation height of the valve is smaller than the steel valve of the same specification, similar to the butterfly valve, and the structure length is smaller than the standard ball valve and similar to the butterfly valve. Besides, the installation is not limited by the direction of water flow and the installation space, and can be installed at any Angle;Online push repair, maintenance. Do not need to be removed from the pipeline.
3. Double seal
A fluororubber seal ring is sintered on the stainless steel crown with special process, which has two kinds of seals, soft and hard. Even if the soft seal is worn or damaged, a reliable seal can be achieved.Depending on the circumstances of the eccentric half - ball valve this design will be applied to the seat.
4. Labor-saving bearing
The upper and lower stem is provided with thrust suction bearing. The composite Shaft Sleeve reduces the transmission torque and has prominent advantages in the choice of electric actuator.
Advanced Stem Security: Triple-sealed anti-blowout stem prevents accidental ejection under high pressure
Bidirectional Sealing: Eccentric disc design achieves zero leakage in both flow directions
Low Torque Operation: Requires 40% less operating torque than conventional valves
Corrosion Resistance: Optional stainless steel trim for abrasive/corrosive media handling
Temperature Adaptability: Certified for -29°C to 450°C operation range
This valve delivers significant operational advantages through its innovative design. The eccentric rotation mechanism eliminates seal friction during operation, extending service life by 3x compared to traditional valves while reducing wear on sealing surfaces. For pipeline engineers, this translates to lower lifecycle costs and reduced emergency maintenance. The double flange configuration allows for easy integration into existing piping systems without special adapters, and the compact design saves up to 30% installation space versus gate valves.
Shanghai Sote Valve's global presence across 6 continents demonstrates our commitment to international quality standards. With dedicated technical support teams in Eastern Europe, Southeast Asia, and North America, we provide localized service for critical applications in oil & gas, chemical processing, power generation, and water treatment. Our manufacturing facility in Shanghai maintains strict process controls validated by third-party auditors, ensuring every valve meets documented performance criteria.
Frequently Asked Questions:
Q: What distinguishes this from standard ball valves?
A: The eccentric half-ball design creates cam action during rotation that lifts the seat away from sealing surface, eliminating friction and wear.Q: Can it handle slurry applications?
A: Yes, with optional metal-seated versions and hardened trim for abrasive media.Q: Are actuators compatible?
A: Designed for mounting pneumatic/electric actuators per ISO 5211 standards.Q: What maintenance is required?
A: Stem seals are field-replaceable without removing valve from pipeline.Q: Is fire-safe design available?
A: Compliant with API 607/API 6FA standards upon request.Q: Lead time for custom sizes?
A: DN800+ sizes have 8-10 week production; contact our engineering team for expedited options.
Trusted by major energy companies in Western Europe and water utilities in Oceania, our valves have proven reliability in critical infrastructure projects. The combination of ISO certifications and OHSAS18001 compliance reflects our dedication to safety and quality management systems. For pipeline systems requiring fail-safe performance, contact our technical specialists at Shanghai Sote Valve to discuss your specific pressure, temperature, and media requirements – let our engineering expertise become your operational advantage.
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