The PROFLO PFMVTS38 3/8" Thermostatic Mixing Valve is a high-quality plumbing product designed for use in various applications. Made of durable brass, this valve features a 3/8 inch port diameter and a compression port type. It is operated manually and comes with a California Prop 65 warning, ensuring customers are aware of any potential health risks. Proudly made in the United States by the trusted brand PROFLO, this single-outlet valve is reliable and efficient for controlling hot water in plumbing systems.