The Rheem RTG20336M Water Control Valve Kit is essential for maintaining optimal performance in your Rheem tankless water heater. This kit includes a durable O-ring designed to ensure a tight seal, preventing leaks and enhancing efficiency. Constructed from high-quality materials, the valve is engineered to withstand high pressure and temperature, making it suitable for various applications. With precise dimensions and compatibility with Rheem models, this kit is a reliable choice for homeowners and professionals alike. Ensure your water heater operates smoothly with this essential replacement part.