The McAlpine W20 Tank Overflow is a plumbing component used for connecting tanks to waste pipes. It features a 70mm flange and a 3.5" tail, making it suitable for use with a range of different tank and waste pipe sizes. The W20 Tank Overflow is designed without an overflow grid, which means that it is not suitable for use in applications where overflow protection is required. However, this design makes it suitable for use in applications where a separate overflow component is used, or where overflow protection is not required. The McAlpine W20 Tank Overflow is made from high-quality materials, ensuring that it is durable and long-lasting. It is also designed for ease of installation and maintenance, with a simple and straightforward design that makes it easy to fit and clean. Overall, the McAlpine W20 Tank Overflow is a reliable and practical plumbing component that is designed for use in a range of different plumbing systems. Its high-quality construction and simple design make it a versatile and useful component for connecting tanks to waste pipes, particularly in situations where overflow protection is not required. Available in 1.25" and 1.5" sizes Available in 2 tail lengths, 3.5" tail and 1.5" tail.

It is designed and manufactured by McAlpine, a UK-based company that specializes in plumbing products.

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