The WATTS LFN36-M1 3/4" Brass Vacuum Relief Valve is a high-quality unit designed for use in plumbing systems. Made of durable brass material, this relief valve is reliable and built to last. Manufactured in the United States by Watts, a trusted brand in the industry, this product ensures smooth operation and efficient performance for your specific application needs. With a unit quantity of one, this relief valve is a crucial component for maintaining proper pressure and flow control in your system.