Drainage Reducer – PVC – Underground Systems

Product Overview

This 160mm x 110mm level invert drainage reducer with a single socket connection is ideal for underground foul and surface water systems. Designed to reduce pipe size from 160mm to 110mm while maintaining a consistent invert level, it ensures pipe gradients and flow efficiency are preserved.

Crafted from durable uPVC to meet BS EN 1401-1 standards, this reducer offers a watertight push-fit joint for plain-ended pipework. The single socket design facilitates direct connection into a larger 160mm drainage run without additional couplers.

Features & Benefits

• Durable uPVC Construction: Resistant to ground chemicals, rot, and corrosion.
• Level Invert Design: Maintains correct pipe fall and flow performance when reducing size.
• Size Compatibility: Seamlessly connects 160mm drainage runs to 110mm pipework.
• Single Socket Fitting: Directly accepts a plain-ended 110mm pipe.
• Watertight Seal: Integrated push-fit gasket ensures leak-free joints.
• Lightweight Handling: Easy to transport, position, and install on-site.

Applications

• Size Reduction: Facilitates transitions from a 160mm main drain to a 110mm branch while maintaining invert levels.
• Foul Drainage: Connects smaller sewer lines into larger mains without affecting flow.
• Surface Water Systems: Links rainwater or stormwater pipes of different diameters.
• System Integration: Enables mixed-diameter layouts in residential or commercial networks.
• Hydraulic Efficiency: Prevents step changes in invert levels, reducing silt build-up risk.

Installation Guidance

• Preparation: Cut and chamfer pipe ends for smooth surfaces before jointing.
• Connection: Fully insert the 110mm plain-ended pipe into the socket seal.
• Alignment: Ensure correct gradient is maintained throughout the drainage run.
• Bedding: Place the reducer on compacted granular material for full support.
• Backfilling: Surround with granular fill before final backfill to protect the joint.

Compliance & Performance

• Standard: Manufactured to BS EN 1401-1.
• Size: 160mm x 110mm reducer.
• Type: Level invert, single socket.
• Material: Unplasticised PVC (uPVC).

FAQ

• Q: What material is this reducer made of?
  A: This reducer is made of durable unplasticised PVC (uPVC).
• Q: How do I ensure a watertight seal?
  A: The integrated push-fit gasket ensures a leak-free joint when properly inserted.
• Q: Can this be used for surface water systems?
  A: Yes, it is suitable for linking rainwater or stormwater pipes of varying diameters.