McAlpine T12 Threaded Waste Adaptor Reducer — 1.5″ to 1.25″ BSP Bush

McAlpine T12 Threaded Waste Adaptor Reducer — 1.5″ to 1.25″ BSP Bush

Features

This genuine McAlpine threaded waste adaptor is a professional plumbing bushing designed to quickly downsize a standard waste thread. Bearing the product code T12, this high-grade white plastic fitting screws directly onto any 1.5″ BSP male thread and reduces it down to a 1.25″ BSP male thread output. This clever reduction eliminates the need to buy entirely new wastes or traps when connecting mismatched kitchen and bathroom drainage lines. The durable, precision-moulded component comes complete with a high-quality rubber sealing washer to ensure a rock-solid, watertight connection.

• Genuine McAlpine component ensures professional trade-quality reliability
• Reduces a 1.5″ BSP thread (approx. 48mm) down to a 1.25″ BSP thread (approx. 42mm)
• Saves money by adapting existing waste outlets without swapping full traps
• Constructed from heavy-duty white plastic to resist chemical cleaners and thermal shock
• Supplied complete with a tailored rubber sealing washer for a leak-free compression fit
• Compact, low-profile design easily accommodates tight under-sink spaces

Technical

• Brand: McAlpine
• Product Code: T12
• Product Type: Threaded Bush Waste Adaptor / Reducer
• Inlet Thread Size: 1.5″ Female BSP (Measures approximately 48mm internally)
• Outlet Thread Size: 1.25″ Male BSP (Measures approximately 42mm externally)
• Material: Premium Polypropylene (White Plastic)
• Inclusions: Plastic Reducer Bush, Rubber Sealing Washer
• Suitability: Domestic waste pipe connections and trap adaptation

Details

Standardizing plumbing systems under a sink turns into an annoying roadblock when your existing sink waste thread doesn’t match your new drainage trap. For example, trying to connect a standard kitchen waste outlet to a slightly narrower vanity unit trap usually leaves you stuck. Most universal pipes don’t account for these distinct sizing mismatches, forcing you to completely remove and replace perfectly functional, expensive brass or chrome wastes just to match your plastic pipework.

Using this genuine McAlpine threaded waste adaptor solves these frustrating diameter mismatches instantly. By acting as a direct thread-converter bush, the T12 screws straight onto your larger 1.5″ thread and instantly steps it down to a 1.25″ output. There is no messy pipe solvent or complicated tool setup required. The thick rubber washer compresses perfectly into the internal collar, stopping water leaks right at the joint line so you can complete your under-sink installation in seconds.