Keg Pressure Relief Valve Pressure Release Valves for Function:1. Release the valve: lift the ring to release excess pressure before opening, making it easier to open the barrel and pour wine.2. Perfect sealing: This relief valve will also improve the sealing under pressure, improving the flavors and flavors of brewing.3. Wide fit: applicable to a variety of barrel caps, the release valve with replaceable O ring is suitable for Cornelius style barrels.4. Total 2 Pcs: A 2-piece lid release valve is included, providing a great solution for home brewing and beverages.5. Good Material: Combining ABS head and stainless steel main body, it will not deform and has good durability for long-term use. Specification: Item Type: Keg Pressure Relief Valve Product Material: Stainless Steel, Plastic. Weight: 26g / 0.92oz (Approx.) Package List:2 x Keg Pressure Relief Valve