The 850 In-Line Double Check Assemblies are specifically designed to prevent the backflow of objectionable but non-toxic pollutants from entering the potable water supply. Key Features: Pollutant Prevention: Effectively blocks non-toxic pollutants from contaminating drinking water. Durable Construction: Made with a robust bronze body for long-lasting performance. Connection Type: Equipped with threaded ball valve end connections for easy installation. Maximum Working Pressure: Rated for up to 175 PSI. Specifications: Backflow Lead Free: Yes Backflow Prevention Type: Double Check Backflow Shape: Inline Manufacturer Part Number: T1113 Primary Material: Brass Primary Size: 1 inch Fitting Connection Type: Female Thread Primary Color: Bronze