Beer Keg Relief Valve Keg Lid Replacement Valve With Spring And Knocker For Home And Hotel Feature:1.3 Pcs In 1 set: including 3 pcs. Pressure relief valves of the barrel cover, with standard size, which has enough for easy installation and .2. Stainless steel: the valve is made of 304 stainless steel, environmentally friendly and durable, rust-proof and corrosion-resistant, has a long service life.3. Main function: to keep the beer keg safe pressure, pull up the ring of the release valve to release the excess pressure before opening the keg, safe.4. Easy Operation: This relief valve is designed with mounting spring and knocker, just twist and insert the cover and pull up the release valve ring for use.5. Wide Application: These beer keg drain valves ensure the safety of home winemakers during the carbonization process, suitable for home use or hotel applications. Specification:Item Type: Beer Keg Relief ValveProduct Material: 304 Stainless Steel Size: Approx. 5.5cm/2.2in Weight: Approx. 58g/2oz Package List:3 x Beer Keg Relief Valve