Drainage Junction – PVC – Underground Systems

Product Overview

This 160mm x 110mm unequal junction features a double socket design and a 45-degree entry, allowing for seamless integration of a smaller 110mm branch into a larger 160mm drainage run. Manufactured to BS EN 1401-1 standards, it ensures durable, watertight connections in underground foul and surface water networks.

The unequal design enables different pipe diameters to integrate within a single drainage layout, making it a practical solution for systems where a 110mm line feeds into a larger 160mm run. The shallow 45-degree branch angle reduces flow turbulence and helps maintain hydraulic efficiency across the system. Its double socket ends allow direct push-fit connection of plain-ended pipes, eliminating the need for separate couplers.

Features & Benefits

• Durable uPVC Body: Resistant to corrosion, chemicals, and long-term ground exposure.
• Equal Compatibility: Connects a 160mm main pipe with a 110mm branch for mixed-size layouts.
• Watertight Seals: Integrated push-fit sockets with rubber gaskets provide reliable joints.
• Lightweight Handling: Easy to position, cut, and install with standard tools.
• Double Socket Design: Allows direct connection of plain-ended pipes without extra fittings.
• 45-degree Branch Entry: Ensures a smoother transition than sharper junctions, reducing blockages.

Applications

• Size Transition: Links 110mm branch pipework into a 160mm main drainage run.
• Foul Water Drainage: Suitable for connecting domestic or commercial sewer pipes.
• Surface Water Management: Integrates rainwater or stormwater pipes into larger networks.
• System Expansion: Adds new branch connections to existing 160mm underground layouts.
• Hydraulic Efficiency: Maintains smoother flow by diverting at a shallow angle.

Installation Guidance

• Preparation: Cut and chamfer pipe ends, ensuring smooth edges before jointing.
• Connection: Push plain-ended 110mm and 160mm pipes fully into the sockets until seated.
• Seal Protection: Avoid twisting or damaging the rubber seals during insertion.
• Bedding: Place on a suitable granular bed for support and stability.
• Backfilling: Surround with compacted granular material before final backfill.

Compliance & Performance

• Standard: Manufactured to BS EN 1401-1.
• Size: 160mm x 110mm, 45-degree angle.
• Type: Unequal junction, double socket.
• Material: Unplasticised PVC (uPVC).

FAQs

• Can this junction be used for both foul and surface water? Yes, it is suitable for both applications.
• What material is the junction made from? The junction is made from durable unplasticised PVC (uPVC).
• Does the junction require additional fittings? No, it features double socket ends for direct connection.