The 4" Sewer Relief Valve by Braxton Harris is engineered to prevent sewer backflow, ensuring a safe and efficient drainage system. Constructed from durable materials, this valve is designed to withstand high pressure and harsh conditions. It features a robust design that allows for easy installation in sewer lines, providing reliable performance in residential and commercial applications. The valve complies with industry standards, ensuring safety and reliability. Its 4" size makes it compatible with standard sewer systems, making it an essential component for effective wastewater management.