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Introducing Air Gap, the ideal solution for preventing backflow in your plumbing system. This high-quality product from Watts is designed to protect against potential contamination of drinking water and meet all NSF/ANSI Standard 61 requirements. Easy to install with a standard NPT connection, this air gap can be used with Series 957 and ranges from 2-1/2 inches to 10 inches in size. Its length is 10-3/16 inches and its durable construction ensures longevity and reliable performance. Whether you are a professional plumber or a DIY enthusiast, Air Gap will provide peace of mind and help keep your water supply safe and clean. Don't compromise on safety - choose Watts Air Gap today!