The 850XL Full Port Bronze Ball Valve is used on Zurn Wilkins small diameter Backflow Assemblies for throttling and balancing installations of low pressure steam, air, water, and non-corrosive gas or oil. Ideal for use in residential, commercial, and industrial applications where lead-free valves are required, the pressure rating for the 850XL is 400 psi WOG with a temperature rating of 33 degrees to 350 degrees Fahrenheit at 50 PSI.. Connection types include FNPT x FNPT, MNPT x FNPT (1/2"), Tapped (FNPT x FNPT), or with single union body (FNPT x FNPT), and features include a bronze body construction with a chrome plated brass ball, and quarter turn, full port ball valves.