Brett Martin 225mm x 150mm 90 Degree Twinwall Branch

This is a 90° twinwall branch junction (also described as a “triple socket branch”) from Brett Martin, with a 225 mm main pipe connection and a 150 mm branch. It is designed for use in surface water drainage, stormwater drainage, and general land drainage systems — such as highway drainage, agricultural drainage, rail/airport drainage, or landfill drainage.

You’d use this junction when you have a main 225 mm twinwall drainage line (e.g. carrying surface water runoff) and need to branch off a 150 mm line — for example to redirect some flow to a different drainage run, to divert water to a soakaway, or connect to another drainage utility. The 90° angle is useful where the branch must go off at a right angle from the main run.

Material & Construction

• Manufactured from high-density polyethylene (HDPE), ensuring strength, durability, and resistance to naturally occurring chemicals in soil. 
• The fitting is rotationally moulded, producing accurate and consistent internal socket diameters and a smooth bore for efficient flow. 
• The outer body is ribbed (corrugated) to give structural rigidity, enabling the fitting to withstand high compressive loads without deformation, even when buried.

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