Universal Multi-Size Reduction Waste Pipe Joiner Coupling — 40-43mm to 32-36mm

Universal Multi-Size Reduction Waste Pipe Joiner Coupling — 40-43mm to 32-36mm

Features

This premium waste pipe joiner coupling is a highly versatile mechanical compression fitting engineered to resolve non-standard and mismatched pipe size connections. Designed with an advanced internal compression ring configuration, it effortlessly bridges larger 40mm, 42mm, or 43mm outside diameter (OD) waste pipes down to smaller 32mm, 34mm, or 36mm OD pipework. Manufactured from heavy-duty, high-impact white polypropylene, it establishes a reliable, tool-free connection between varying pipe brands and materials. As a result, it eliminates the need for messy solvent welding or specialised conversion rings on domestic plumbing systems.

• Universal compression fitting bridges mismatched plumbing lines effortlessly
• Secures larger 40mm, 42mm, and 43mm waste pipes on the inlet side
• Reduces cleanly to smaller 32mm, 34mm, and 36mm waste pipes on the outlet
• Multifit internal seal accommodates varying material wall thicknesses easily
• Secure mechanical hand-tightened nuts eliminate the need for solvent glue
• Suitable for joining ABS plastic, PVC, copper, and lead domestic pipes
• Manufactured in ultra-durable polypropylene to prevent structural warping

Technical

• Brand: McAlpine
• Part Number: ST28M
• Large Side Compatibility: 40mm, 42mm, and 43mm Outside Diameter (OD) Pipes
• Small Side Compatibility: 32mm, 34mm, and 36mm Outside Diameter (OD) Pipes
• Fitting Type: Straight Reducing Compression Coupling
• Material: High-Impact Rigid Polypropylene
• Colour: White
• Seal Material: High-Grade Synthetic Rubber Washers
• Installation Note: For thicker waste pipes such as iron the plastic insert may have to be carefully cut out in order to install
• Application: Domestic and Commercial Kitchen, Bathroom, or Utility Waste Stacks

Instructions

1. Simply slide the white nut over the pipe first along with the nylon washer, before the pointed black rubber washer
2. Make sure that the black rubber washer is pointing the thin end towards the white fitting you have yet to put on and slide the rubber on an inch or so
3. Push the rest of the fitting on so that the rubber joins up with the plastic fitting, you may then try and push the fitting with the rubber further down the pipe if need be
4. Finally bring the nut back and screw onto the rest of the fitting, compressing the pointed washer against the plastic to make a seal, then repeat the action for the other side and that’s it!

Details

Connecting non-matching or historical waste pipes turns into a frustrating nightmare. Consequently, different plumbing brands use slightly varied millimetre diameters that refuse to push together. Therefore, you face immediate project delays trying to find niche adaptors. Furthermore, forcing mismatched parts into tight voids strains your joints. As a result, this clunky setup causes hidden tracking leaks and expensive structural water damage.

Fortunately, installing this universal waste pipe joiner coupling fixes mismatched plumbing lines instantly. Specifically, the smart multi-fit compression design compresses tightly over multiple pipe diameters on both ends. Therefore, you bypass the need for messy solvent glues or complex heat welds. For thicker waste pipes such as iron the plastic insert may have to be carefully cut out in order to install. Consequently, you get a clean, secure, and permanently watertight connection that effortlessly bridges the gap between old and new pipe layouts.