An orbital ball valve is a high-performance valve that achieves frictionless opening and closing through compound motion. Its technical characteristics and application scenarios are as follows:
I. Core Technical Characteristics
Frictionless Sealing Design
Through the cooperation of the valve stem's spiral groove and guide pin, the ball axially disengages from the valve seat before rotating during opening and closing, avoiding contact wear on the sealing surface throughout the process.
Bidirectional Sealing and High-Pressure Adaptability
Adopting a wedge-type sealing structure, the mechanical clamping force ensures zero leakage even under high pressure of 42MPa, unaffected by pipeline pressure difference.
Low-Torque Operation
The valve stem's inclined groove orbital design reduces operating torque by over 50%, enabling easy opening and closing with manual or electric actuators.
Self-Cleaning Function
Fluid flows evenly 360° along the ball's sealing surface to flush impurities, suitable for media containing particles or prone to coking.
In-Line Maintenance Capability
The top-entry structure allows direct removal of the valve bonnet for parts replacement without disassembling the pipeline, reducing downtime.
II. Typical Application Scenarios
Petrochemical Industry
Used in high-pressure environments such as hydrocracking units and oil refineries (e.g., 42MPa recycle hydrogen pipelines), resistant to H₂S corrosion.
Natural Gas Transmission
Adapts to high-pressure working conditions of long-distance pipelines, with fire-safe design complying with API 6FA standard to prevent leakage risks.
Special Medium Control
Handles media with fibers, high viscosity, or corrosiveness and the self-cleaning function reduces clogging.
High-Risk Environments
Explosion-proof design is adopted for flammable and explosive sites to ensure operational safety.
III. Structural Classification
Trunnion-Mounted Orbital Ball Valve: Suitable for high-pressure and large-diameter scenarios, with minimal valve seat deformation and long service life.
Hastelloy Orbital Ball Valve: Specialized for highly corrosive media, with sealing surfaces overlay welded with hard alloy.
Through mechanical wedging force and phased motion mechanism, the orbital ball valve achieves long service life (10 times longer than traditional valves) and low maintenance costs under harsh working conditions.
