The Brett Martin B4131 is a 110mm Double Socket Rest Bend with a long radius and 87.5° angle, designed for underground drainage systems.

🔧 Key Features

• Diameter: 110mm
• Angle: 87.5° (ideal for smooth directional changes)
• Type: Double socket with integrated seals for watertight joints
• Material: High-strength PVCu (polyvinyl chloride unplasticised)
• Application: Used at the base of soil stacks or inspection chambers to redirect flow while allowing access for maintenance
• Standard: Manufactured to BS EN 1401-1, ensuring quality and reliability

This bend is especially useful when transitioning between vertical and horizontal pipe runs in foul water drainage systems. If you're planning a layout or need help matching fittings, we can help sketch out a full setup.