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The 1-1/4 Thread, Backflow Preventer Valve from Watts is designed to protect potable water systems from contamination. This valve meets NSF 60 and NSF 372 standards for lead-free materials and has a maximum working pressure of 175 PSI. The valve can be installed in vertical or horizontal positions and has an easily accessible check mechanism to ensure proper functionality. Its durable construction makes it ideal for use in residential, commercial, and industrial applications, providing peace of mind against backflow incidents.