The McAlpine Z28M-NRVS is an in-line non-return valve designed for use in plumbing and drainage systems. It is specifically designed to prevent backflow of water or other liquids, which can cause contamination or damage to the system. The valve features 2" BS EN 1329-1:2000 solvent weld connections, which provide a secure and leak-proof connection to the pipe system. The top access design allows for easy cleaning and maintenance of the valve without the need to remove it from the pipeline. The McAlpine Z28M-NRVS valve is made of high-quality materials that ensure durability and long-lasting performance. It is suitable for use in a wide range of applications, including domestic and commercial plumbing systems, sewage treatment plants, and industrial processes. Overall, the McAlpine Z28M-NRVS in-line non-return valve is an essential component of any plumbing or drainage system, providing reliable backflow prevention and easy maintenance. ・ Prevents back flow of water ・ Must be installed in the horizontal position ・ Should only be used when there is no alternative ・ BS EN 1329-1:2020 solvent Weld Connections ・ Top Access for easy cleaning