Buttweld Eccentric Reducer
Optimised Flow Transitions. Air Pocket Prevention. Built for Demanding Systems.
The Buttweld Eccentric Reducer is an essential component in pipeline systems, enabling smooth transitions between pipes of varying diameters while maintaining flow alignment along the pipe bottom. This design is particularly effective in preventing air accumulation and is commonly used upstream of pumps to increase velocity and reduce pressure loss.
Sizing
Sizing is based on Nominal Bore (NB) – a standardised measurement referencing the internal diameter of pipes. NB ensures compatibility across fittings, valves, and other pipeline components, helping maintain consistency and efficiency across diverse systems.
Design and Functionality
Eccentric reducers feature an off-centre alignment, ensuring the pipeline’s top level remains flat. This is vital for evacuating trapped air or gases during system start-up and operation. Unlike concentric reducers, the eccentric design eliminates the risk of gas pockets that could disrupt flow or damage equipment.
Applications
The Buttweld Eccentric Reducer is highly versatile and suitable for a wide range of industrial systems, including:
- Oil and gas pipelines and refineries.
- Water treatment and distribution facilities.
- Power generation and steam systems.
- Industrial process and chemical plants.
Construction and Benefits
- Material: High-grade carbon alloy steel compliant with ASTM A234.
- Leakproof Welded Connection: Ensures long-term reliability and safety.
- Reduced Turbulence: Smooth internal surface and gradual transition minimise flow disruption.
- Pressure Efficiency: Maintains flow velocity and reduces pressure drop.
- System Longevity: Decreased wear and lower risk of cavitation or erosion.
Technical Specifications
Valve Warehouse Australia supplies Buttweld Eccentric Reducers in a variety of sizes to suit complex industrial layouts. Easy to install and space-efficient, these reducers are ideal for both new construction and retrofit applications. Their heavy-duty construction ensures performance under high-pressure and high-temperature conditions.
Upgrade your pipeline’s reliability and performance with the Buttweld Eccentric Reducer—the professional’s choice for safe, efficient, and durable flow control.


























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