Black 110mm Soil Pipe Adapter Reducer – 40mm / 43mm Solvent Waste Pipe Fitting

Black 110mm Soil Pipe Adapter Reducer – 40mm / 43mm Solvent Waste Pipe Fitting

Features

The black 110mm soil pipe adapter reducer provides a reliable connection solution designed specifically for routing 40mm nominal (43mm external diameter) waste pipes into main 110mm soil and vent systems. Manufactured from durable, high-grade black uPVC, this adapter features a plain-ended spigot designed to push straight into a standard 110mm soil socket, such as those found on tees or elbows. Furthermore, it incorporates a solvent-weld boss reducer engineered to accept 43mm external diameter waste pipes—commonly referenced as 1 1/2″ or 40mm nominal sizing. Because the cap and reducer arrive unglued, you can easily apply your own solvent cement on site to establish a permanent, fused bond tailored to your exact plumbing layout. As a result, you achieve a professional, watertight, and tidy transition between household waste lines and main drainage branches.

• Standard 110mm Socket Spigot: Precision-engineered with a plain-ended spigot designed to insert smoothly into standard 110mm soil sockets. Therefore, it integrates effortlessly into existing drainage layouts.
• Suits 43mm External Waste Pipes: Perfectly sized to accommodate 43mm outer diameter waste lines (often classed as 1 1/2″ or 40mm nominal). Consequently, it connects kitchen sinks, basins, and utility appliances directly to the main stack.
• Permanent Solvent-Weld Design: Built for a glued connection between the reducer and cap. Moreover, it delivers a chemically fused, leak-free joint for long-term reliability.
• Durable Black uPVC Construction: Manufactured from weather-resistant, robust black plastic. As a result, it matches standard exterior soil and vent pipe installations seamlessly.
• Supplied Unglued for Flexibility: Delivered as separate components that fit together. Furthermore, it allows you to align and bond the fitting precisely during on-site installation.

Technical

• Brand(s): Polypipe / Floplast
• MPN(s): SO65B / SP21B
• Product Type: Soil Pipe Adapter Reducer / Boss Adapter
• Soil Pipe Compatibility: Standard 110mm / 4″ Soil Socket (Plain Spigot Inlet)
• Waste Pipe Compatibility: 43mm External Diameter / 1 1/2″ / 40mm Nominal Waste Pipe
• Connection Type: Spigot (to Soil Socket) & Solvent Glue Fit (to Waste Pipe)
• Material Construction: Rigid uPVC Plastic
• Colour: Black
• Supply Note: Supplied unglued for on-site solvent bonding

Details

Connecting a standard 40mm or 1 1/2″ waste pipe from a kitchen sink, basin, or utility appliance into a standard 110mm soil stack often presents a sizing challenge. Moreover, forcing mismatched fittings together can result in chronic leaks and weak joints under everyday water flow.

Fortunately, this black 110mm soil adapter solves the problem with professional efficiency. Because it combines a secure spigot for 110mm sockets with a dedicated solvent-weld reducer for 43mm waste lines, it bridges drainage pipes cleanly. Consequently, you achieve a secure, professional, and permanent plumbing connection.